CMS tracking performance results from early LHC operation

The first LHC pp collisions at centre-of-mass energies of 0.9 and 2.36 TeV were recorded by the CMS detector in December 2009. The trajectories of charged particles produced in the collisions were reconstructed using the all-silicon Tracker and their momenta were measured in the 3.8 T axial magnetic field. Results from the Tracker commissioning are presented including studies of timing, efficiency, signalto-noise, resolution, and ionization energy. Reconstructed tracks are used to benchmark the performance in terms of track and vertex resolutions, reconstruction of decays, estimation of ionization energy loss, as well as identification of photon conversions, nuclear interactions, and heavy-flavour decays. DOI: https://doi.org/10.1140/epjc/s10052-010-1491-3 Posted at the Zurich Open Repository and Archive, University of Zurich ZORA URL: https://doi.org/10.5167/uzh-45804 Originally published at: CMS Collaboration; Khachatryan, V; Aguiló, E; Amsler, C; Chiochia, V (2010). CMS tracking performance results from early LHC operation. European Physical Journal C Particles and Fields, 70(4):11651192. DOI: https://doi.org/10.1140/epjc/s10052-010-1491-3 Eur. Phys. J. C (2010) 70: 1165–1192 DOI 10.1140/epjc/s10052-010-1491-3 Special Article Tools for Experiment and Theory CMS tracking performance results from early LHC operation The CMS Collaboration V. Khachatryan1, A.M. Sirunyan1, A. Tumasyan1, W. Adam2, T. Bergauer2, M. Dragicevic2, J. Erö2, C. Fabjan2, M. Friedl2, R. Frühwirth2, V.M. Ghete2, J. Hammer2,b, S. Hänsel2, M. Hoch2, N. Hörmann2, J. Hrubec2, M. Jeitler2, G. Kasieczka2, W. Kiesenhofer2, M. Krammer2, D. Liko2, I. Mikulec2, M. Pernicka2, H. Rohringer2, R. Schöfbeck2, J. Strauss2, A. Taurok2, F. Teischinger2, W. Waltenberger2, G. Walzel2, E. Widl2, C.-E. Wulz2, V. Mossolov3, N. Shumeiko3, J. Suarez Gonzalez3, L. Benucci4, L. Ceard4, E.A. De Wolf4, X. Janssen4, T. Maes4, L. Mucibello4, S. Ochesanu4, B. Roland4, R. Rougny4, M. Selvaggi4, H. Van Haevermaet4, P. Van Mechelen4, N. Van Remortel4, V. Adler5, S. Beauceron5, S. Blyweert5, J. D’Hondt5, O. Devroede5, A. Kalogeropoulos5, J. Maes5, M. Maes5, S. Tavernier5, W. Van Doninck5, P. Van Mulders5, I. Villella5, E.C. Chabert6, O. Charaf6, B. Clerbaux6, G. De Lentdecker6, V. Dero6, A.P.R. Gay6, G.H. Hammad6, P.E. Marage6, C. Vander Velde6, P. Vanlaer6, J. Wickens6, S. Costantini7, M. Grunewald7, B. Klein7, A. Marinov7, D. Ryckbosch7, F. Thyssen7, M. Tytgat7, L. Vanelderen7, P. Verwilligen7, S. Walsh7, N. Zaganidis7, S. Basegmez8, G. Bruno8, J. Caudron8, J. De Favereau De Jeneret8, C. Delaere8, P. Demin8, D. Favart8, A. Giammanco8, G. Grégoire8, J. Hollar8, V. Lemaitre8, O. Militaru8, S. Ovyn8, D. Pagano8, A. Pin8, K. Piotrzkowski8,b, L. Quertenmont8, N. Schul8, N. Beliy9, T. Caebergs9, E. Daubie9, G.A. Alves10, M.E. Pol10, M.H.G. Souza10, W. Carvalho11, E.M. Da Costa11, D. De Jesus Damiao11, C. De Oliveira Martins11, S. Fonseca De Souza11, L. Mundim11, H. Nogima11, V. Oguri11, A. Santoro11, S.M. Silva Do Amaral11, A. Sznajder11, F. Torres Da Silva De Araujo11, F.A. Dias12, M.A.F. Dias12, T.R. Fernandez Perez Tomei12, E.M. Gregores12,c, F. Marinho12, S.F. Novaes12, Sandra S. Padula12, N. Darmenov13,b, L. Dimitrov13, V. Genchev13,b, P. Iaydjiev13,b, S. Piperov13, S. Stoykova13, G. Sultanov13, R. Trayanov13, I. Vankov13, M. Dyulendarova14, R. Hadjiiska14, V. Kozhuharov14, L. Litov14, E. Marinova14, M. Mateev14,†, B. Pavlov14, P. Petkov14, J.G. Bian15, G.M. Chen15, H.S. Chen15, C.H. Jiang15, D. Liang15, S. Liang15, J. Wang15, J. Wang15, X. Wang15, Z. Wang15, M. Yang15, J. Zang15, Z. Zhang15, Y. Ban16, S. Guo16, Z. Hu16, Y. Mao16, S.J. Qian16, H. Teng16, B. Zhu16, A. Cabrera17, C.A. Carrillo Montoya17, B. Gomez Moreno17, A.A. Ocampo Rios17, A.F. Osorio Oliveros17, J.C. Sanabria17, N. Godinovic18, D. Lelas18, K. Lelas18, R. Plestina18,d, D. Polic18, I. Puljak18, Z. Antunovic19, M. Dzelalija19, V. Brigljevic20, S. Duric20, K. Kadija20, S. Morovic20, A. Attikis21, R. Fereos21, M. Galanti21, J. Mousa21, C. Nicolaou21, F. Ptochos21, P.A. Razis21, H. Rykaczewski21, M.A. Mahmoud22,e, A. Hektor23, M. Kadastik23, K. Kannike23, M. Müntel23, M. Raidal23, L. Rebane23, V. Azzolini24, P. Eerola24, S. Czellar25, J. Härkönen25, A. Heikkinen25, V. Karimäki25, R. Kinnunen25, J. Klem25, M.J. Kortelainen25, T. Lampén25, K. Lassila-Perini25, S. Lehti25, T. Lindén25, P. Luukka25, T. Mäenpää25, S. Sarkar25, E. Tuominen25, J. Tuominiemi25, E. Tuovinen25, D. Ungaro25, L. Wendland25, K. Banzuzi26, A. Korpela26, T. Tuuva26, D. Sillou27, M. Besancon28, M. Dejardin28, D. Denegri28, J. Descamps28, B. Fabbro28, J.L. Faure28, F. Ferri28, S. Ganjour28, F.X. Gentit28, A. Givernaud28, P. Gras28, G. Hamel de Monchenault28, P. Jarry28, E. Locci28, J. Malcles28, M. Marionneau28, L. Millischer28, J. Rander28, A. Rosowsky28, D. Rousseau28, M. Titov28, P. Verrecchia28, S. Baffioni29, L. Bianchini29, M. Bluj29,f, C. Broutin29, P. Busson29, C. Charlot29, L. Dobrzynski29, S. Elgammal29, R. Granier de Cassagnac29, M. Haguenauer29, A. Kalinowski29, P. Miné29, P. Paganini29, D. Sabes29, Y. Sirois29, C. Thiebaux29, A. Zabi29, J.-L. Agram30,g, A. Besson30, D. Bloch30, D. Bodin30, J.-M. Brom30, M. Cardaci30, E. Conte30,g, F. Drouhin30,g, C. Ferro30, J.-C. Fontaine30,g, D. Gelé30, U. Goerlach30, S. Greder30, P. Juillot30, M. Karim30,g, A.-C. Le Bihan30, Y. Mikami30, J. Speck30, P. Van Hove30, F. Fassi31, D. Mercier31, C. Baty32, N. Beaupere32, M. Bedjidian32, O. Bondu32, G. Boudoul32, D. Boumediene32, H. Brun32, N. Chanon32, R. Chierici32, D. Contardo32, P. Depasse32, H. El Mamouni32, J. Fay32, S. Gascon32, B. Ille32, T. Kurca32, T. Le Grand32, M. Lethuillier32, L. Mirabito32, S. Perries32, V. Sordini32, S. Tosi32, Y. Tschudi32, P. Verdier32, H. Xiao32, V. Roinishvili33, G. Anagnostou34, M. Edelhoff34, L. Feld34, N. Heracleous34, O. Hindrichs34, R. Jussen34, K. Klein34, J. Merz34, N. Mohr34, A. Ostapchuk34, A. Perieanu34, F. Raupach34, J. Sammet34, S. Schael34, D. Sprenger34, H. Weber34, M. Weber34, B. Wittmer34, O. Actis35, M. Ata35, W. Bender35, P. Biallass35, M. Erdmann35, J. Frangenheim35, T. Hebbeker35, A. Hinzmann35, K. Hoepfner35, C. Hof35, M. Kirsch35, 1166 Eur. Phys. J. C (2010) 70: 1165–1192 T. Klimkovich35, P. Kreuzer35,b, D. Lanske35,†, C. Magass35, M. Merschmeyer35, A. Meyer35, P. Papacz35, H. Pieta35, H. Reithler35, S.A. Schmitz35, L. Sonnenschein35, M. Sowa35, J. Steggemann35, D. Teyssier35, C. Zeidler35, M. Bontenackels36, M. Davids36, M. Duda36, G. Flügge36, H. Geenen36, M. Giffels36, W. Haj Ahmad36, D. Heydhausen36, T. Kress36, Y. Kuessel36, A. Linn36, A. Nowack36, L. Perchalla36, O. Pooth36, P. Sauerland36, A. Stahl36, M. Thomas36, D. Tornier36, M.H. Zoeller36, M. Aldaya Martin37, W. Behrenhoff37, U. Behrens37, M. Bergholz37, K. Borras37, A. Campbell37, E. Castro37, D. Dammann37, G. Eckerlin37, A. Flossdorf37, G. Flucke37, A. Geiser37, J. Hauk37, H. Jung37, M. Kasemann37, I. Katkov37, C. Kleinwort37, H. Kluge37, A. Knutsson37, E. Kuznetsova37, W. Lange37, W. Lohmann37, R. Mankel37, M. Marienfeld37, I.-A. Melzer-Pellmann37, A.B. Meyer37, J. Mnich37, A. Mussgiller37, J. Olzem37, A. Parenti37, A. Raspereza37, R. Schmidt37, T. Schoerner-Sadenius37, N. Sen37, M. Stein37, J. Tomaszewska37, D. Volyanskyy37, C. Wissing37, C. Autermann38, S. Bobrovskyi38, J. Draeger38, D. Eckstein38, H. Enderle38, U. Gebbert38, K. Kaschube38, G. Kaussen38, R. Klanner38, B. Mura38, S. Naumann-Emme38, F. Nowak38, N. Pietsch38, C. Sander38, H. Schettler38, P. Schleper38, M. Schröder38, T. Schum38, J. Schwandt38, A.K. Srivastava38, H. Stadie38, G. Steinbrück38, J. Thomsen38, R. Wolf38, J. Bauer39, V. Buege39, A. Cakir39, T. Chwalek39, D. Daeuwel39, W. De Boer39, A. Dierlamm39, G. Dirkes39, M. Feindt39, J. Gruschke39, C. Hackstein39, F. Hartmann39, M. Heinrich39, H. Held39, K.H. Hoffmann39, S. Honc39, T. Kuhr39, D. Martschei39, S. Mueller39, Th. Müller39, M. Niegel39, O. Oberst39, A. Oehler39, J. Ott39, T. Peiffer39, D. Piparo39, G. Quast39, K. Rabbertz39, F. Ratnikov39, M. Renz39, A. Sabellek39, C. Saout39, A. Scheurer39, P. Schieferdecker39, F.-P. Schilling39, G. Schott39, H.J. Simonis39, F.M. Stober39, D. Troendle39, J. Wagner-Kuhr39, M. Zeise39, V. Zhukov39,h, E.B. Ziebarth39, G. Daskalakis40, T. Geralis40, A. Kyriakis40, D. Loukas40, I. Manolakos40, A. Markou40, C. Markou40, C. Mavrommatis40, E. Petrakou40, L. Gouskos41, P. Katsas41, A. Panagiotou41,b, I. Evangelou42, P. Kokkas42, N. Manthos42, I. Papadopoulos42, V. Patras42, F.A. Triantis42, A. Aranyi43, G. Bencze43, L. Boldizsar43, G. Debreczeni43, C. Hajdu43,b, D. Horvath43,i, A. Kapusi43, K. Krajczar43,j, A. Laszlo43, F. Sikler43, G. Vesztergombi43,j, N. Beni44, J. Molnar44, J. Palinkas44, Z. Szillasi44,b, V. Veszpremi44, P. Raics45, Z.L. Trocsanyi45, B. Ujvari45, S. Bansal46, S.B. Beri46, V. Bhatnagar46, M. Jindal46, M. Kaur46, J.M. Kohli46, M.Z. Mehta46, N. Nishu46, L.K. Saini46, A. Sharma46, R. Sharma46, A.P. Singh46, J.B. Singh46, S.P. Singh46, S. Ahuja47, S. Bhattacharya47, S. Chauhan47, B.C. Choudhary47, P. Gupta47, S. Jain47, S. Jain47, A. Kumar47, K. Ranjan47, R.K. Shivpuri47, R.K. Choudhury48, D. Dutta48, S. Kailas48, S.K. Kataria48, A.K. Mohanty48, L.M. Pant48, P. Shukla48, P. Suggisetti48, T. Aziz49, M. Guchait49,k, A. Gurtu49, M. Maity49,l, D. Majumder49, G. Majumder49, K. Mazumdar49, G.B. Mohanty49, A. Saha49, K. Sudhakar49, N. Wickramage49, S. Banerjee50, S. Dugad50, N.K. Mondal50, H. Arfaei51, H. Bakhshiansohi51, A. Fahim51, M. Hashemi51, A. Jafari51, M. Mohammadi Najafabadi51, S. Paktinat Mehdiabadi51, B. Safarzadeh51, M. Zeinali51, M. Abbrescia52,53, L. Barbone52, A. Colaleo52, D. Creanza52,54, N. De Filippis52, M. De Palma52,53, A. Dimitrov52, F. Fedele52, L. Fiore52, G. Iaselli52,54, L. Lusito52,53,b, G. Maggi52,54, M. Maggi52, N. Manna52,53, B. Marangelli52,53, S. My52,54, S. Nuzzo52,53, G.A. Pierro52, A. Pompili52,53, G. Pugliese52,54, F. Romano52,54, G. Roselli52,53, G. Selvaggi52,53, L. Silvestris52, R. Trentadue52, S. Tupputi52,53, G. Zito52, G. Abbiendi55, A.C. Benvenuti55, D. Bonacorsi55, S. Braibant-Giacomelli55,56, P. Capiluppi55,56, A. Castro55,56, F.R. Cavallo55, G. Codispoti55,56, M. Cuffiani55,56, G.M. Dallavalle55,b, F. Fabbri55, A. Fanfani55,56, D. Fasanella55, P. Giacomelli55, M. Giunta55,b, S. Marcellini55, G. Masetti55,56, A. Montanari55, F.L. Navarria55,56, F. Odorici55, A. Perrotta55, A.M. Rossi55,56, T. Rovelli55,56, G. Siroli55,56, S. Albergo57,58, G. Cappello57,58, M. Chiorboli57,58, S. Costa57,58, A. Tricomi57,58, C. Tuve57, G. Barbagli59, G. Broccolo59,60, V. Ciulli59,60, C. Civinini59, R. D’Alessandro59,60, E. Focardi59,60, S. Frosali59,60, E. Gallo59, C. Genta59,60, P. Lenzi59,60,b, M. Meschini59, S. Paoletti59, G. Sguazzoni59, A. Tropiano59, L. Benussi61, S. Bianco61, S. Colafranceschi61,m, F. Fabbri61, D. Piccolo61, P. Fabbricatore62, R. Musenich62, A. Benaglia63,64, G.B. Cerati63,64,b, F. De Guio63,64, L. Di Matteo63,64, A. Ghezzi63,64,b, P. Govoni63,64, M. Malberti63,64,b, S. Malvezzi63, A. Martelli63,64,d, A. Massironi63,64, D. Menasce63, V. Miccio63,64, L. Moroni63, P. Negri63,64, M. Paganoni63,64, D. Pedrini63, S. Ragazzi63,64, N. Redaelli63, S. Sala63, R. Salerno63,64, T. Tabarelli de Fatis63,64, V. Tancini63,64, S. Taroni63,64, S. Buontempo65, A. Cimmino65,66, A. De Cosa65,66,b, M. De Gruttola65,66,b, F. Fabozzi65,n, A.O.M. Iorio65, L. Lista65, P. Noli65,66, P. Paolucci65, P. Azzi67, N. Bacchetta67, P. Bellan67,68,b, D. Bisello67,68, R. Carlin67,68, P. Checchia67, E. Conti67, M. De Mattia67,68, T. Dorigo67, U. Dosselli67, F. Fanzago67, F. Gasparini67,68, U. Gasparini67,68, P. Giubilato67,68, A. Gresele67,69, S. Lacaprara67,o, I. Lazzizzera67,69, M. Margoni67,68, M. Mazzucato67, A.T. Meneguzzo67,68, L. Perrozzi67, N. Pozzobon67,68, P. Ronchese67,68, F. Simonetto67,68, E. Torassa67, M. Tosi67,68, S. Vanini67,68, P. Zotto67,68, G. Zumerle67,68, P. Baesso70,71, U. Berzano70, C. Riccardi70,71, P. Torre70,71, P. Vitulo70,71, C. Viviani70,71, M. Biasini72,73, G.M. Bilei72, Eur. Phys. J. C (2010) 70: 1165–1192 1167 B. Caponeri72,73, L. Fanò72, P. Lariccia72,73, A. Lucaroni72,73, G. Mantovani72,73, M. Menichelli72, A. Nappi72,73, A. Santocchia72,73, L. Servoli72, M. Valdata72, R. Volpe72,73,b, P. Azzurri74,76, G. Bagliesi74, J. Bernardini74,75,b, T. Boccali74,b, R. Castaldi74, R.T. Dagnolo74,76, R. Dell’Orso74, F. Fiori74,75, L. Foà74,76, A. Giassi74, A. Kraan74, F. Ligabue74,76, T. Lomtadze74, L. Martini74, A. Messineo74,75, F. Palla74, F. Palmonari74, G. Segneri74, A.T. Serban74, P. Spagnolo74,b, R. Tenchini74,a,b, G. Tonelli74,75,b, A. Venturi74, P.G. Verdini74, L. Barone77,78, F. Cavallari77,b, D. Del Re77,78, E. Di Marco77,78, M. Diemoz77, D. Franci77,78, M. Grassi77, E. Longo77,78, G. Organtini77,78, A. Palma77,78, F. Pandolfi77,78, R. Paramatti77,b, S. Rahatlou77,78,b, N. Amapane79,80, R. Arcidiacono79,80, S. Argiro79,80, M. Arneodo79,81, C. Biino79, C. Botta79,80, N. Cartiglia79, R. Castello79,80, M. Costa79,80, N. Demaria79, A. Graziano79,80, C. Mariotti79, M. Marone79,80, S. Maselli79, E. Migliore79,80, G. Mila79,80, V. Monaco79,80, M. Musich79,80, M.M. Obertino79,81, N. Pastrone79, M. Pelliccioni79,80,b, A. Romero79,80, M. Ruspa79,81, R. Sacchi79,80, A. Solano79,80, A. Staiano79, D. Trocino79,80, A. Vilela Pereira79,80,b, F. Ambroglini82,83, S. Belforte82, F. Cossutti82, G. Della Ricca82,83, B. Gobbo82, D. Montanino82, A. Penzo82, H. Kim84, S. Chang85, J. Chung85, D.H. Kim85, G.N. Kim85, J.E. Kim85, D.J. Kong85, H. Park85, D. Son85, D.C. Son85, Z. Kim86, J.Y. Kim86, S. Song86, S. Choi87, B. Hong87, H. Kim87, J.H. Kim87, T.J. Kim87, K.S. Lee87, D.H. Moon87, S.K. Park87, H.B. Rhee87, K.S. Sim87, M. Choi88, S. Kang88, H. Kim88, C. Park88, I.C. Park88, S. Park88, Y. Choi89, Y.K. Choi89, J. Goh89, J. Lee89, S. Lee89, H. Seo89, I. Yu89, M. Janulis90, D. Martisiute90, P. Petrov90, T. Sabonis90, S. Carrillo Moreno91, H.A. Salazar Ibarguen92, E. Casimiro Linares93, A. Morelos Pineda93, M.A. Reyes-Santos93, P. Allfrey94, D. Krofcheck94, J. Tam94, P.H. Butler95, T. Signal95, J.C. Williams95, M. Ahmad96, I. Ahmed96, M.I. Asghar96, H.R. Hoorani96, W.A. Khan96, T. Khurshid96, S. Qazi96, M. Cwiok97, W. Dominik97, K. Doroba97, M. Konecki97, J. Krolikowski97, T. Frueboes98, R. Gokieli98, M. Górski98, M. Kazana98, K. Nawrocki98, M. Szleper98, G. Wrochna98, P. Zalewski98, N. Almeida99, A. David99, P. Faccioli99, P.G. Ferreira Parracho99, M. Gallinaro99, P. Martins99, G. Mini99, P. Musella99, A. Nayak99, L. Raposo99, P.Q. Ribeiro99, J. Seixas99, P. Silva99, D. Soares99, J. Varela99,b, H.K. Wöhri99, I. Belotelov100, P. Bunin100, M. Finger100, M. Finger Jr.100, I. Golutvin100, A. Kamenev100, V. Karjavin100, G. Kozlov100, A. Lanev100, P. Moisenz100, V. Palichik100, V. Perelygin100, S. Shmatov100, V. Smirnov100, A. Volodko100, A. Zarubin100, N. Bondar101, V. Golovtsov101, Y. Ivanov101, V. Kim101, P. Levchenko101, I. Smirnov101, V. Sulimov101, L. Uvarov101, S. Vavilov101, A. Vorobyev101, Yu. Andreev102, S. Gninenko102, N. Golubev102, M. Kirsanov102, N. Krasnikov102, V. Matveev102, A. Pashenkov102, A. Toropin102, S. Troitsky102, V. Epshteyn103, V. Gavrilov103, N. Ilina103, V. Kaftanov103,†, M. Kossov103,b, A. Krokhotin103, S. Kuleshov103, A. Oulianov103, G. Safronov103, S. Semenov103, I. Shreyber103, V. Stolin103, E. Vlasov103, A. Zhokin103, E. Boos104, M. Dubinin104,p, L. Dudko104, A. Ershov104, A. Gribushin104, O. Kodolova104, I. Lokhtin104, S. Obraztsov104, S. Petrushanko104, L. Sarycheva104, V. Savrin104, A. Snigirev104, V. Andreev105, I. Dremin105, M. Kirakosyan105, S.V. Rusakov105, A. Vinogradov105, I. Azhgirey106, S. Bitioukov106, K. Datsko106, V. Grishin106,b, V. Kachanov106, D. Konstantinov106, V. Krychkine106, V. Petrov106, R. Ryutin106, S. Slabospitsky106, A. Sobol106, A. Sytine106, L. Tourtchanovitch106, S. Troshin106, N. Tyurin106, A. Uzunian106, A. Volkov106, P. Adzic107,q, M. Djordjevic107, D. Krpic107,q, D. Maletic107, J. Milosevic107, J. Puzovic107,q, M. Aguilar-Benitez108, J. Alcaraz Maestre108, P. Arce108, C. Battilana108, E. Calvo108, M. Cepeda108, M. Cerrada108, M. Chamizo Llatas108, N. Colino108, B. De La Cruz108, C. Diez Pardos108, C. Fernandez Bedoya108, J.P. Fern ández Ramos108, A. Ferrando108, J. Flix108, M.C. Fouz108, P. Garcia-Abia108, O. Gonzalez Lopez108, S. Goy Lopez108, J.M. Hernandez108, M.I. Josa108, G. Merino108, J. Puerta Pelayo108, I. Redondo108, L. Romero108, J. Santaolalla108, C. Willmott108, C. Albajar109, J.F. de Trocóniz109, J. Cuevas110, J. Fernandez Menendez110, I. Gonzalez Caballero110, L. Lloret Iglesias110, J.M. Vizan Garcia110, I.J. Cabrillo111, A. Calderon111, S.H. Chuang111, I. Diaz Merino111, C. Diez Gonzalez111, J. Duarte Campderros111, M. Fernandez111, G. Gomez111, J. Gonzalez Sanchez111, R. Gonzalez Suarez111, C. Jorda111, P. Lobelle Pardo111, A. Lopez Virto111, J. Marco111, R. Marco111, C. Martinez Rivero111, P. Martinez Ruiz del Arbol111, F. Matorras111, T. Rodrigo111, A. Ruiz Jimeno111, L. Scodellaro111, M. Sobron Sanudo111, I. Vila111, R. Vilar Cortabitarte111, D. Abbaneo112, E. Auffray112, P. Baillon112, A.H. Ball112, D. Barney112, F. Beaudette112,d, A.J. Bell112,r, D. Benedetti112, C. Bernet112,d, W. Bialas112, P. Bloch112, A. Bocci112, S. Bolognesi112, H. Breuker112, G. Brona112, K. Bunkowski112, T. Camporesi112, E. Cano112, A. Cattai112, G. Cerminara112, T. Christiansen112, J.A. Coarasa Perez112, R. Covarelli112, B. Curé112, T. Dahms112, A. De Roeck112, A. Elliott-Peisert112, W. Funk112, A. Gaddi112, S. Gennai112, H. Gerwig112, D. Gigi112, K. Gill112, D. Giordano112, F. Glege112, R. Gomez-Reino Garrido112, S. Gowdy112, L. Guiducci112, M. Gouzevitch112, M. Hansen112, C. Hartl112, J. Harvey112, B. Hegner112, C. Henderson112, H.F. Hoffmann112, A. Honma112, V. Innocente112, P. Janot112, P. Lecoq112, C. Leonidopoulos112, C. Lourenço112, A. Macpherson112, T. Mäki112, 1168 Eur. Phys. J. C (2010) 70: 1165–1192 L. Malgeri112, M. Mannelli112, L. Masetti112, F. Meijers112, S. Mersi112, E. Meschi112, R. Moser112, M.U. Mozer112, M. Mulders112, E. Nesvold112,b, L. Orsini112, E. Perez112, A. Petrilli112, A. Pfeiffer112, M. Pierini112, M. Pimiä112, A. Racz112, G. Rolandi112,s, C. Rovelli112,t, M. Rovere112, H. Sakulin112, C. Schäfer112, C. Schwick112, I. Segoni112, A. Sharma112, P. Siegrist112, M. Simon112, P. Sphicas112,u, D. Spiga112, M. Spiropulu112,p, F. Stöckli112, M. Stoye112, P. Tropea112, A. Tsirou112, G.I. Veres112,j, P. Vichoudis112, M. Voutilainen112, W.D. Zeuner112, W. Bertl113, K. Deiters113, W. Erdmann113, K. Gabathuler113, R. Horisberger113, Q. Ingram113, H.C. Kaestli113, S. König113, D. Kotlinski113, U. Langenegger113, F. Meier113, D. Renker113, T. Rohe113, J. Sibille113,v, A. Starodumov113,w, L. Caminada114,x, Z. Chen114, S. Cittolin114, G. Dissertori114, M. Dittmar114, J. Eugster114, K. Freudenreich114, C. Grab114, A. Hervé114, W. Hintz114, P. Lecomte114, W. Lustermann114, C. Marchica114,x, P. Meridiani114, P. Milenovic114,y, F. Moortgat114, A. Nardulli114, P. Nef114, F. Nessi-Tedaldi114, L. Pape114, F. Pauss114, T. Punz114, A. Rizzi114, F.J. Ronga114, L. Sala114, A.K. Sanchez114, M.-C. Sawley114, D. Schinzel114, B. Stieger114, L. Tauscher114,†, A. Thea114, K. Theofilatos114, D. Treille114, M. Weber114, L. Wehrli114, J. Weng114, E. Aguiló115, C. Amsler115, V. Chiochia115, S. De Visscher115, C. Favaro115, M. Ivova Rikova115, A. Jaeger115, B. Millan Mejias115, C. Regenfus115, P. Robmann115, T. Rommerskirchen115, A. Schmidt115, D. Tsirigkas115, L. Wilke115, Y.H. Chang116, K.H. Chen116, W.T. Chen116, A. Go116, C.M. Kuo116, S.W. Li116, W. Lin116, M.H. Liu116, Y.J. Lu116, J.H. Wu116, S.S. Yu116, P. Bartalini117, P. Chang117, Y.H. Chang117, Y.W. Chang117, Y. Chao117, K.F. Chen117, W.-S. Hou117, Y. Hsiung117, K.Y. Kao117, Y.J. Lei117, S.W. Lin117, R.-S. Lu117, J.G. Shiu117, Y.M. Tzeng117, K. Ueno117, C.C. Wang117, M. Wang117, J.T. Wei117, A. Adiguzel118, A. Ayhan118, M.N. Bakirci118, S. Cerci118,aa, Z. Demir118, C. Dozen118, I. Dumanoglu118, E. Eskut118, S. Girgis118, G. Gökbulut118, Y. Güler118, E. Gurpinar118, I. Hos118, E.E. Kangal118, T. Karaman118, A. Kayis Topaksu118, A. Nart118, G. Önengüt118, K. Ozdemir118, S. Ozturk118, A. Polatöz118, O. Sahin118, O. Sengul118, K. Sogut118,ab, B. Tali118, H. Topakli118, D. Uzun118, L.N. Vergili118, M. Vergili118, C. Zorbilmez118, I.V. Akin119, T. Aliev119, S. Bilmis119, M. Deniz119, H. Gamsizkan119, A.M. Guler119, K. Ocalan119, A. Ozpineci119, M. Serin119, R. Sever119, U.E. Surat119, E. Yildirim119, M. Zeyrek119, M. Deliomeroglu120, D. Demir120,ac, E. Gülmez120, A. Halu120, B. Isildak120, M. Kaya120,ad, O. Kaya120,ad, M. Özbek120, S. Ozkorucuklu120,ae, N. Sonmez120,af, L. Levchuk121, P. Bell122, F. Bostock122, J.J. Brooke122, T.L. Cheng122, D. Cussans122, R. Frazier122, J. Goldstein122, M. Hansen122, G.P. Heath122, H.F. Heath122, C. Hill122, B. Huckvale122, J. Jackson122, L. Kreczko122, C.K. Mackay122, S. Metson122, D.M. Newbold122,ag, K. Nirunpong122, V.J. Smith122, S. Ward122, L. Basso123, K.W. Bell123, A. Belyaev123, C. Brew123, R.M. Brown123, B. Camanzi123, D.J.A. Cockerill123, J.A. Coughlan123, K. Harder123, S. Harper123, B.W. Kennedy123, E. Olaiya123, D. Petyt123, B.C. Radburn-Smith123, C.H. Shepherd-Themistocleous123, I.R. Tomalin123, W.J. Womersley123, S.D. Worm123, R. Bainbridge124, G. Ball124, J. Ballin124, R. Beuselinck124, O. Buchmuller124, D. Colling124, N. Cripps124, M. Cutajar124, G. Davies124, M. Della Negra124, C. Foudas124, J. Fulcher124, D. Futyan124, A. Guneratne Bryer124, G. Hall124, Z. Hatherell124, J. Hays124, G. Iles124, G. Karapostoli124, L. Lyons124, A.-M. Magnan124, J. Marrouche124, R. Nandi124, J. Nash124, A. Nikitenko124,w, A. Papageorgiou124, M. Pesaresi124, K. Petridis124, M. Pioppi124,ah, D.M. Raymond124, N. Rompotis124, A. Rose124, M.J. Ryan124, C. Seez124, P. Sharp124, A. Sparrow124, A. Tapper124, S. Tourneur124, M. Vazquez Acosta124, T. Virdee124,b, S. Wakefield124, D. Wardrope124, T. Whyntie124, M. Barrett125, M. Chadwick125, J.E. Cole125, P.R. Hobson125, A. Khan125, P. Kyberd125, D. Leslie125, I.D. Reid125, L. Teodorescu125, T. Bose126, E. Carrera Jarrin126, A. Clough126, C. Fantasia126, A. Heister126, J. St. John126, P. Lawson126, D. Lazic126, J. Rohlf126, L. Sulak126, J. Andrea127, A. Avetisyan127, S. Bhattacharya127, J.P. Chou127, D. Cutts127, S. Esen127, A. Ferapontov127, U. Heintz127, S. Jabeen127, G. Kukartsev127, G. Landsberg127, M. Narain127, D. Nguyen127, T. Speer127, K.V. Tsang127, M.A. Borgia128, R. Breedon128, M. Calderon De La Barca Sanchez128, D. Cebra128, M. Chertok128, J. Conway128, P.T. Cox128, J. Dolen128, R. Erbacher128, E. Friis128, W. Ko128, A. Kopecky128, R. Lander128, H. Liu128, S. Maruyama128, T. Miceli128, M. Nikolic128, D. Pellett128, J. Robles128, T. Schwarz128, M. Searle128, J. Smith128, M. Squires128, M. Tripathi128, R. Vasquez Sierra128, C. Veelken128, V. Andreev129, K. Arisaka129, D. Cline129, R. Cousins129, A. Deisher129, S. Erhan129,b, C. Farrell129, M. Felcini129, J. Hauser129, M. Ignatenko129, C. Jarvis129, C. Plager129, G. Rakness129, P. Schlein129,†, J. Tucker129, V. Valuev129, R. Wallny129, J. Babb130, R. Clare130, J. Ellison130, J.W. Gary130, F. Giordano130, G. Hanson130, G.Y. Jeng130, S.C. Kao130, F. Liu130, H. Liu130, A. Luthra130, H. Nguyen130, G. Pasztor130,ai, A. Satpathy130, B.C. Shen130,†, R. Stringer130, J. Sturdy130, S. Sumowidagdo130, R. Wilken130, S. Wimpenny130, W. Andrews131, J.G. Branson131, E. Dusinberre131, D. Evans131, F. Golf131, A. Holzner131, R. Kelley131, M. Lebourgeois131, J. Letts131, B. Mangano131, J. Muelmenstaedt131, S. Padhi131, C. Palmer131, G. Petrucciani131, H. Pi131, M. Pieri131, R. Ranieri131, M. Sani131, V. Sharma131,b, S. Simon131, Y. Tu131, A. Vartak131, F. Würthwein131, A. Yagil131, D. Barge132, R. Bellan132, Eur. Phys. J. C (2010) 70: 1165–1192 1169 M. Blume132, C. Campagnari132, M. D’Alfonso132, T. Danielson132, J. Garberson132, J. Incandela132, C. Justus132, P. Kalavase132, S.A. Koay132, D. Kovalskyi132, V. Krutelyov132, J. Lamb132, S. Lowette132, V. Pavlunin132, F. Rebassoo132, J. Ribnik132, J. Richman132, R. Rossin132, D. Stuart132, W. To132, J.R. Vlimant132, M. Witherell132, A. Bornheim133, J. Bunn133, M. Gataullin133, D. Kcira133, V. Litvine133, Y. Ma133, H.B. Newman133, C. Rogan133, K. Shin133, V. Timciuc133, P. Traczyk133, J. Veverka133, R. Wilkinson133, Y. Yang133, R.Y. Zhu133, B. Akgun134, R. Carroll134, T. Ferguson134, D.W. Jang134, S.Y. Jun134, Y.F. Liu134, M. Paulini134, J. Russ134, N. Terentyev134, H. Vogel134, I. Vorobiev134, J.P. Cumalat135, M.E. Dinardo135, B.R. Drell135, C.J. Edelmaier135, W.T. Ford135, B. Heyburn135, E. Luiggi Lopez135, U. Nauenberg135, J.G. Smith135, K. Stenson135, K.A. Ulmer135, S.R. Wagner135, S.L. Zang135, L. Agostino136, J. Alexander136, F. Blekman136, A. Chatterjee136, S. Das136, N. Eggert136, L.J. Fields136, L.K. Gibbons136, B. Heltsley136, K. Henriksson136, W. Hopkins136, A. Khukhunaishvili136, B. Kreis136, V. Kuznetsov136, G. Nicolas Kaufman136, J.R. Patterson136, D. Puigh136, D. Riley136, A. Ryd136, M. Saelim136, X. Shi136, W. Sun136, W.D. Teo136, J. Thom136, J. Thompson136, J. Vaughan136, Y. Weng136, P. Wittich136, A. Biselli137, G. Cirino137, D. Winn137, S. Abdullin138, M. Albrow138, J. Anderson138, G. Apollinari138, M. Atac138, J.A. Bakken138, S. Banerjee138, L.A.T. Bauerdick138, A. Beretvas138, J. Berryhill138, P.C. Bhat138, I. Bloch138, F. Borcherding138, K. Burkett138, J.N. Butler138, V. Chetluru138, H.W.K. Cheung138, F. Chlebana138, S. Cihangir138, M. Demarteau138, D.P. Eartly138, V.D. Elvira138, I. Fisk138, J. Freeman138, Y. Gao138, E. Gottschalk138, D. Green138, O. Gutsche138, A. Hahn138, J. Hanlon138, R.M. Harris138, J. Hirschauer138, E. James138, H. Jensen138, M. Johnson138, U. Joshi138, R. Khatiwada138, B. Kilminster138, B. Klima138, K. Kousouris138, S. Kunori138, S. Kwan138, P. Limon138, R. Lipton138, J. Lykken138, K. Maeshima138, J.M. Marraffino138, D. Mason138, P. McBride138, T. McCauley138, T. Miao138, K. Mishra138, S. Mrenna138, Y. Musienko138,aj, C. Newman-Holmes138, V. O’Dell138, S. Popescu138, R. Pordes138, O. Prokofyev138, N. Saoulidou138, E. Sexton-Kennedy138, S. Sharma138, R.P. Smith138,†, A. Soha138, W.J. Spalding138, L. Spiegel138, P. Tan138, L. Taylor138, S. Tkaczyk138, L. Uplegger138, E.W. Vaandering138, R. Vidal138, J. Whitmore138, W. Wu138, F. Yumiceva138, J.C. Yun138, D. Acosta139, P. Avery139, D. Bourilkov139, M. Chen139, G.P. Di Giovanni139, D. Dobur139, A. Drozdetskiy139, R.D. Field139, M. Fisher139, Y. Fu139, I.K. Furic139, J. Gartner139, B. Kim139, S. Klimenko139, J. Konigsberg139, A. Korytov139, K. Kotov139, A. Kropivnitskaya139, T. Kypreos139, K. Matchev139, G. Mitselmakher139, L. Muniz139, Y. Pakhotin139, J. Piedra Gomez139, C. Prescott139, R. Remington139, M. Schmitt139, B. Scurlock139, P. Sellers139, D. Wang139, J. Yelton139, M. Zakaria139, C. Ceron140, V. Gaultney140, L. Kramer140, L.M. Lebolo140, S. Linn140, P. Markowitz140, G. Martinez140, D. Mesa140, J.L. Rodriguez140, T. Adams141, A. Askew141, J. Chen141, B. Diamond141, S.V. Gleyzer141, J. Haas141, S. Hagopian141, V. Hagopian141, M. Jenkins141, K.F. Johnson141, H. Prosper141, S. Sekmen141, V. Veeraraghavan141, M.M. Baarmand142, S. Guragain142, M. Hohlmann142, H. Kalakhety142, H. Mermerkaya142, R. Ralich142, I. Vodopiyanov142, M.R. Adams143, I.M. Anghel143, L. Apanasevich143, V.E. Bazterra143, R.R. Betts143, J. Callner143, R. Cavanaugh143, C. Dragoiu143, E.J. Garcia-Solis143, C.E. Gerber143, D.J. Hofman143, S. Khalatian143, F. Lacroix143, E. Shabalina143, A. Smoron143, D. Strom143, N. Varelas143, U. Akgun144, E.A. Albayrak144, B. Bilki144, K. Cankocak144,ak, W. Clarida144, F. Duru144, C.K. Lae144, E. McCliment144, J.-P. Merlo144, A. Mestvirishvili144, A. Moeller144, J. Nachtman144, C.R. Newsom144, E. Norbeck144, J. Olson144, Y. Onel144, F. Ozok144, S. Sen144, J. Wetzel144, T. Yetkin144, K. Yi144, B.A. Barnett145, B. Blumenfeld145, A. Bonato145, C. Eskew145, D. Fehling145, G. Giurgiu145, A.V. Gritsan145, Z.J. Guo145, G. Hu145, P. Maksimovic145, S. Rappoccio145, M. Swartz145, N.V. Tran145, A. Whitbeck145, P. Baringer146, A. Bean146, G. Benelli146, O. Grachov146, M. Murray146, V. Radicci146, S. Sanders146, J.S. Wood146, V. Zhukova146, D. Bandurin147, T. Bolton147, I. Chakaberia147, A. Ivanov147, K. Kaadze147, Y. Maravin147, S. Shrestha147, I. Svintradze147, Z. Wan147, J. Gronberg148, D. Lange148, D. Wright148, D. Baden149, M. Boutemeur149, S.C. Eno149, D. Ferencek149, N.J. Hadley149, R.G. Kellogg149, M. Kirn149, Y. Lu149, A.C. Mignerey149, K. Rossato149, P. Rumerio149, F. Santanastasio149, A. Skuja149, J. Temple149, M.B. Tonjes149, S.C. Tonwar149, E. Twedt149, B. Alver150, G. Bauer150, J. Bendavid150, W. Busza150, E. Butz150, I.A. Cali150, M. Chan150, D. D’Enterria150, P. Everaerts150, G. Gomez Ceballos150, M. Goncharov150, K.A. Hahn150, P. Harris150, Y. Kim150, M. Klute150, Y.-J. Lee150, W. Li150, C. Loizides150, P.D. Luckey150, T. Ma150, S. Nahn150, C. Paus150, C. Roland150, G. Roland150, M. Rudolph150, G.S.F. Stephans150, K. Sumorok150, K. Sung150, E.A. Wenger150, B. Wyslouch150, S. Xie150, M. Yang150, Y. Yilmaz150, A.S. Yoon150, M. Zanetti150, P. Cole151, S.I. Cooper151, P. Cushman151, B. Dahmes151, A. De Benedetti151, P.R. Dudero151, G. Franzoni151, J. Haupt151, K. Klapoetke151, Y. Kubota151, J. Mans151, V. Rekovic151, R. Rusack151, M. Sasseville151, A. Singovsky151, L.M. Cremaldi152, R. Godang152, R. Kroeger152, L. Perera152, R. Rahmat152, D.A. Sanders152, P. Sonnek152, D. Summers152, K. Bloom153, S. Bose153, J. Butt153, 1170 Eur. Phys. J. C (2010) 70: 1165–1192 D.R. Claes153, A. Dominguez153, M. Eads153, J. Keller153, T. Kelly153, I. Kravchenko153, J. Lazo-Flores153, C. Lundstedt153, H. Malbouisson153, S. Malik153, G.R. Snow153, U. Baur154, I. Iashvili154, A. Kharchilava154, A. Kumar154, K. Smith154, J. Zennamo154, G. Alverson155, E. Barberis155, D. Baumgartel155, O. Boeriu155, M. Chasco155, S. Reucroft155, J. Swain155, D. Wood155, J. Zhang155, A. Anastassov156, A. Kubik156, R.A. Ofierzynski156, A. Pozdnyakov156, M. Schmitt156, S. Stoynev156, M. Velasco156, S. Won156, L. Antonelli157, D. Berry157, M. Hildreth157, C. Jessop157, D.J. Karmgard157, J. Kolb157, T. Kolberg157, K. Lannon157, S. Lynch157, N. Marinelli157, D.M. Morse157, R. Ruchti157, J. Slaunwhite157, N. Valls157, J. Warchol157, M. Wayne157, J. Ziegler157, B. Bylsma158, L.S. Durkin158, J. Gu158, P. Killewald158, T.Y. Ling158, M. Rodenburg158, G. Williams158, N. Adam159, E. Berry159, P. Elmer159, D. Gerbaudo159, V. Halyo159, A. Hunt159, J. Jones159, E. Laird159, D. Lopes Pegna159, D. Marlow159, T. Medvedeva159, M. Mooney159, J. Olsen159, P. Piroué159, D. Stickland159, C. Tully159, J.S. Werner159, A. Zuranski159, J.G. Acosta160, X.T. Huang160, A. Lopez160, H. Mendez160, S. Oliveros160, J.E. Ramirez Vargas160, A. Zatzerklyaniy160, E. Alagoz161, V.E. Barnes161, G. Bolla161, L. Borrello161, D. Bortoletto161, A. Everett161, A.F. Garfinkel161, Z. Gecse161, L. Gutay161, M. Jones161, O. Koybasi161, A.T. Laasanen161, N. Leonardo161, C. Liu161, V. Maroussov161, P. Merkel161, D.H. Miller161, N. Neumeister161, K. Potamianos161, I. Shipsey161, D. Silvers161, H.D. Yoo161, J. Zablocki161, Y. Zheng161, P. Jindal162, N. Parashar162, V. Cuplov163, K.M. Ecklund163, F.J.M. Geurts163, J.H. Liu163, J. Morales163, B.P. Padley163, R. Redjimi163, J. Roberts163, B. Betchart164, A. Bodek164, Y.S. Chung164, P. de Barbaro164, R. Demina164, Y. Eshaq164, H. Flacher164, A. Garcia-Bellido164, P. Goldenzweig164, Y. Gotra164, J. Han164, A. Harel164, D.C. Miner164, D. Orbaker164, G. Petrillo164, D. Vishnevskiy164, M. Zielinski164, A. Bhatti165, L. Demortier165, K. Goulianos165, K. Hatakeyama165, G. Lungu165, C. Mesropian165, M. Yan165, O. Atramentov166, Y. Gershtein166, R. Gray166, E. Halkiadakis166, D. Hidas166, D. Hits166, A. Lath166, K. Rose166, S. Schnetzer166, S. Somalwar166, R. Stone166, S. Thomas166, G. Cerizza167, M. Hollingsworth167, S. Spanier167, Z.C. Yang167, A. York167, J. Asaadi168, R. Eusebi168, J. Gilmore168, A. Gurrola168, T. Kamon168, V. Khotilovich168, R. Montalvo168, C.N. Nguyen168, J. Pivarski168, A. Safonov168, S. Sengupta168, D. Toback168, M. Weinberger168, N. Akchurin169, C. Bardak169, J. Damgov169, C. Jeong169, K. Kovitanggoon169, S.W. Lee169, P. Mane169, Y. Roh169, A. Sill169, I. Volobouev169, R. Wigmans169, E. Yazgan169, E. Appelt170, E. Brownson170, D. Engh170, C. Florez170, W. Gabella170, W. Johns170, P. Kurt170, C. Maguire170, A. Melo170, P. Sheldon170, J. Velkovska170, M.W. Arenton171, M. Balazs171, S. Boutle171, M. Buehler171, S. Conetti171, B. Cox171, R. Hirosky171, A. Ledovskoy171, C. Neu171, R. Yohay171, S. Gollapinni172, K. Gunthoti172, R. Harr172, P.E. Karchin172, M. Mattson172, C. Milstène172, A. Sakharov172, M. Anderson173, M. Bachtis173, J.N. Bellinger173, D. Carlsmith173, S. Dasu173, S. Dutta173, J. Efron173, L. Gray173, K.S. Grogg173, M. Grothe173, M. Herndon173, P. Klabbers173, J. Klukas173, A. Lanaro173, C. Lazaridis173, J. Leonard173, D. Lomidze173, R. Loveless173, A. Mohapatra173, G. Polese173, D. Reeder173, A. Savin173, W.H. Smith173, J. Swanson173, M. Weinberg173 Yerevan Physics Institute, Yerevan, Armenia Institut für Hochenergiephysik der OeAW, Wien, Austria National Centre for Particle and High Energy Physics, Minsk, Belarus Universiteit Antwerpen, Antwerpen, Belgium Vrije Universiteit Brussel, Brussel, Belgium Université Libre de Bruxelles, Bruxelles, Belgium Ghent University, Ghent, Belgium Université Catholique de Louvain, Louvain-la-Neuve, Belgium Université de Mons, Mons, Belgium Centro Brasileiro de Pesquisas Fisicas, Rio de Janeiro, Brazil Universidade do Estado do Rio de Janeiro, Rio de Janeiro, Brazil Instituto de Fisica Teorica, Universidade Estadual Paulista, Sao Paulo, Brazil Institute for Nuclear Research and Nuclear Energy, Sofia, Bulgaria University of Sofia, Sofia, Bulgaria Institute of High Energy Physics, Beijing, China State Key Lab. of Nucl. Phys. and Tech., Peking University, Beijing, China Universidad de Los Andes, Bogota, Colombia Technical University of Split, Split, Croatia University of Split, Split, Croatia Institute Rudjer Boskovic, Zagreb, Croatia University of Cyprus, Nicosia, Cyprus Academy of Scientific Research and Technology of the Arab Republic of Egypt, Egyptian Network of High Energy Physics, Cairo, Egypt National Institute of Chemical Physics and Biophysics, Tallinn, Estonia Department of Physics, University of Helsinki, Helsinki, Finland Eur. Phys. J. C (2010) 70: 1165–1192 1171 Helsinki Institute of Physics, Helsinki, Finland Lappeenranta University of Technology, Lappeenranta, Finland Laboratoire d’Annecy-le-Vieux de Physique des Particules, IN2P3-CNRS, Annecy-le-Vieux, France DSM/IRFU, CEA/Saclay, Gif-sur-Yvette, France Laboratoire Leprince-Ringuet, Ecole Polytechnique, IN2P3-CNRS, Palaiseau, France Institut Pluridisciplinaire Hubert Curien, Université de Strasbourg, Université de Haute Alsace Mulhouse, CNRS/IN2P3, Strasbourg, France Centre de Calcul de l’Institut National de Physique Nucleaire et de Physique des Particules (IN2P3), Villeurbanne, France Université de Lyon, Université Claude Bernard Lyon 1, CNRS-IN2P3, Institut de Physique Nucléaire de Lyon, Villeurbanne, France E. Andronikashvili Institute of Physics, Academy of Science, Tbilisi, Georgia RWTH Aachen University, I. Physikalisches Institut, Aachen, Germany RWTH Aachen University, III. Physikalisches Institut A, Aachen, Germany RWTH Aachen University, III. Physikalisches Institut B, Aachen, Germany Deutsches Elektronen-Synchrotron, Hamburg, Germany University of Hamburg, Hamburg, Germany Institut für Experimentelle Kernphysik, Karlsruhe, Germany Institute of Nuclear Physics “Demokritos”, Aghia Paraskevi, Greece University of Athens, Athens, Greece University of Ioánnina, Ioánnina, Greece KFKI Research Institute for Particle and Nuclear Physics, Budapest, Hungary Institute of Nuclear Research ATOMKI, Debrecen, Hungary University of Debrecen, Debrecen, Hungary Panjab University, Chandigarh, India University of Delhi, Delhi, India Bhabha Atomic Research Centre, Mumbai, India Tata Institute of Fundamental Research—EHEP, Mumbai, India Tata Institute of Fundamental Research—HECR, Mumbai, India Institute for Studies in Theoretical Physics & Mathematics (IPM), Tehran, Iran INFN Sezione di Bari, Bari, Italy Università di Bari, Bari, Italy Politecnico di Bari, Bari, Italy INFN Sezione di Bologna, Bologna, Italy Università di Bologna, Bologna, Italy INFN Sezione di Catania, Catania, Italy Università di Catania, Catania, Italy INFN Sezione di Firenze, Firenze, Italy Università di Firenze, Firenze, Italy INFN Laboratori Nazionali di Frascati, Frascati, Italy INFN Sezione di Genova, Genova, Italy INFN Sezione di Milano-Biccoca, Milano, Italy Università di Milano-Bicocca, Milano, Italy INFN Sezione di Napoli, Napoli, Italy Università di Napoli “Federico II”, Napoli, Italy INFN Sezione di Padova, Padova, Italy Università di Padova, Padova, Italy Università di Trento (Trento), Padova, Italy INFN Sezione di Pavia, Pavia, Italy Università di Pavia, Pavia, Italy INFN Sezione di Perugia, Perugia, Italy Università di Perugia, Perugia, Italy INFN Sezione di Pisa, Pisa, Italy Università di Pisa, Pisa, Italy Scuola Normale Superiore di Pisa, Pisa, Italy INFN Sezione di Roma, Roma, Italy Università di Roma “La Sapienza”, Roma, Italy INFN Sezione di Torino, Torino, Italy Università di Torino, Torino, Italy Università del Piemonte Orientale (Novara), Torino, Italy INFN Sezione di Trieste, Trieste, Italy Università di Trieste, Trieste, Italy Chonbuk National University, Chonju, Korea Kyungpook National University, Daegu, Korea Chonnam National University, Institute for Universe and Elementary Particles, Kwangju, Korea Korea University, Seoul, Korea University of Seoul, Seoul, Korea Sungkyunkwan University, Suwon, Korea 1172 Eur. Phys. J. C (2010) 70: 1165–1192 Vilnius University, Vilnius, Lithuania Universidad Iberoamericana, Mexico City, Mexico Benemerita Universidad Autonoma de Puebla, Puebla, Mexico Universidad Autónoma de San Luis Potosí, San Luis Potosí, Mexico University of Auckland, Auckland, New Zealand University of Canterbury, Christchurch, New Zealand National Centre for Physics, Quaid-I-Azam University, Islamabad, Pakistan Institute of Experimental Physics, Warsaw, Poland Soltan Institute for Nuclear Studies, Warsaw, Poland Laboratório de Instrumentaç ao e Física Experimental de Partículas, Lisboa, Portugal Joint Institute for Nuclear Research, Dubna, Russia Petersburg Nuclear Physics Institute, Gatchina (St Petersburg), Russia Institute for Nuclear Research, Moscow, Russia Institute for Theoretical and Experimental Physics, Moscow, Russia Moscow State University, Moscow, Russia P.N. Lebedev Physical Institute, Moscow, Russia State Research Center of Russian Federation, Institute for High Energy Physics, Protvino, Russia University of Belgrade, Faculty of Physics and Vinca Institute of Nuclear Sciences, Belgrade, Serbia Centro de Investigaciones Energéticas Medioambientales y Tecnológicas (CIEMAT), Madrid, Spain Universidad Autónoma de Madrid, Madrid, Spain Universidad de Oviedo, Oviedo, Spain Instituto de Física de Cantabria (IFCA), CSIC-Universidad de Cantabria, Santander, Spain CERN, European Organization for Nuclear Research, Geneva, Switzerland Paul Scherrer Institut, Villigen, Switzerland Institute for Particle Physics, ETH Zurich, Zurich, Switzerland Universität Zürich, Zurich, Switzerland National Central University, Chung-Li, Taiwan National Taiwan University (NTU), Taipei, Taiwan Cukurova University, Adana, Turkey Middle East Technical University, Physics Department, Ankara, Turkey Bogaziçi University, Department of Physics, Istanbul, Turkey National Scientific Center, Kharkov Institute of Physics and Technology, Kharkov, Ukraine University of Bristol, Bristol, UK Rutherford Appleton Laboratory, Didcot, UK Imperial College, University of London, London, UK Brunel University, Uxbridge, UK Boston University, Boston, USA Brown University, Providence, USA University of California, Davis, Davis, USA University of California, Los Angeles, Los Angeles, USA University of California, Riverside, Riverside, USA University of California, San Diego, La Jolla, USA University of California, Santa Barbara, Santa Barbara, USA California Institute of Technology, Pasadena, USA Carnegie Mellon University, Pittsburgh, USA University of Colorado at Boulder, Boulder, USA Cornell University, Ithaca, USA Fairfield University, Fairfield, USA Fermi National Accelerator Laboratory, Batavia, USA University of Florida, Gainesville, USA Florida International University, Miami, USA Florida State University, Tallahassee, USA Florida Institute of Technology, Melbourne, USA University of Illinois at Chicago (UIC), Chicago, USA The University of Iowa, Iowa City, USA Johns Hopkins University, Baltimore, USA The University of Kansas, Lawrence, USA Kansas State University, Manhattan, USA Lawrence Livermore National Laboratory, Livermore, USA University of Maryland, College Park, USA Massachusetts Institute of Technology, Cambridge, USA University of Minnesota, Minneapolis, USA University of Mississippi, University, USA University of Nebraska-Lincoln, Lincoln, USA State University of New York at Buffalo, Buffalo, USA Eur. Phys. J. C (2010) 70: 1165–1192 1173 Northeastern University, Boston, USA Northwestern University, Evanston, USA University of Notre Dame, Notre Dame, USA The Ohio State University, Columbus, USA Princeton University, Princeton, USA University of Puerto Rico, Mayaguez, USA Purdue University, West Lafayette, USA Purdue University Calumet, Hammond, USA Rice University, Houston, USA University of Rochester, Rochester, USA The Rockefeller University, New York, USA Rutgers, the State University of New Jersey, Piscataway, USA University of Tennessee, Knoxville, USA Texas A&M University, College Station, USA Texas Tech University, Lubbock, USA Vanderbilt University, Nashville, USA University of Virginia, Charlottesville, USA Wayne State University, Detroit, USA University of Wisconsin, Madison, USA Received: 12 July 2010 / Revised: 22 October 2010 / Published online: 24 November 2010 © CERN for the benefit of the CMS collaboration 2010. This article is published with open access at Springerlink.com a e-mail: [email protected] bAlso at CERN, European Organization for Nuclear Research, Geneva, Switzerland. cAlso at Universidade Federal do ABC, Santo Andre, Brazil. dAlso at Laboratoire Leprince-Ringuet, Ecole Polytechnique, IN2P3CNRS, Palaiseau, France. eAlso at Fayoum University, El-Fayoum, Egypt. fAlso at Soltan Institute for Nuclear Studies, Warsaw, Poland. gAlso at Université de Haute-Alsace, Mulhouse, France. hAlso at Moscow State University, Moscow, Russia. iAlso at Institute of Nuclear Research ATOMKI, Debrecen, Hungary. jAlso at Eötvös Loránd University, Budapest, Hungary. kAlso at Tata Institute of Fundamental Research HECR, Mumbai, India. lAlso at University of Visva-Bharati, Santiniketan, India. mAlso at Facolta’ Ingegneria Università di Roma “La Sapienza”, Roma, Italy. nAlso at Università della Basilicata, Potenza, Italy. oAlso at Laboratori Nazionali di Legnaro dell’ INFN, Legnaro, Italy. pAlso at California Institute of Technology, Pasadena, USA. qAlso at Faculty of Physics of University of Belgrade, Belgrade, Serbia. rAlso at Université de Genève, Geneva, Switzerland. sAlso at Scuola Normale e Sezione dell’ INFN, Pisa, Italy. tAlso at INFN Sezione di Roma; Università di Roma “La Sapienza”, Roma, Italy. uAlso at University of Athens, Athens, Greece. vAlso at The University of Kansas, Lawrence, USA. wAlso at Institute for Theoretical and Experimental Physics, Moscow, Russia. xAlso at Paul Scherrer Institut, Villigen, Switzerland. yAlso at University of Belgrade, Faculty of Physics and Vinca Institute of Nuclear Sciences, Belgrade, Serbia. Abstract The first LHC pp collisions at centre-of-mass energies of 0.9 and 2.36 TeV were recorded by the CMS detector in December 2009. The trajectories of charged particles produced in the collisions were reconstructed using the all-silicon Tracker and their momenta were measured in the 3.8 T axial magnetic field. Results from the Tracker commissioning are presented including studies of timing, efficiency, signal-to-noise, resolution, and ionization energy. Reconstructed tracks are used to benchmark the performance in terms of track and vertex resolutions, reconstruction of decays, estimation of ionization energy loss, as well as identification of photon conversions, nuclear interactions, and heavy-flavour decays. aaAlso at Adiyaman University, Adiyaman, Turkey. abAlso at Mersin University, Mersin, Turkey. acAlso at Izmir Institute of Technology, Izmir, Turkey. adAlso at Kafkas University, Kars, Turkey. aeAlso at Suleyman Demirel University, Isparta, Turkey. afAlso at Ege University, Izmir, Turkey. agAlso at Rutherford Appleton Laboratory, Didcot, United Kingdom. ahAlso at INFN Sezione di Perugia; Università di Perugia, Perugia, Italy. aiAlso at KFKI Research Institute for Particle and Nuclear Physics, Budapest, Hungary. ajAlso at Institute for Nuclear Research, Moscow, Russia. akAlso at Istanbul Technical University, Istanbul, Turkey. †Deceased. 1174 Eur. Phys. J. C (2010) 70: 1165–1192