Measurement of associated production of vector bosons and top quark-antiquark pairs in pp collisions at sqrt[s]=7 TeV.
نویسندگان
- S Chatrchyan
- V Khachatryan
- A M Sirunyan
- A Tumasyan
- W Adam
- E Aguilo
- T Bergauer
- M Dragicevic
- J Erö
- C Fabjan
- M Friedl
- R Frühwirth
- V M Ghete
- N Hörmann
- J Hrubec
- M Jeitler
- W Kiesenhofer
- V Knünz
- M Krammer
- I Krätschmer
- D Liko
- I Mikulec
- M Pernicka
- D Rabady
- B Rahbaran
- C Rohringer
- H Rohringer
- R Schöfbeck
- J Strauss
- A Taurok
- W Waltenberger
- C-E Wulz
- V Mossolov
- N Shumeiko
- J Suarez Gonzalez
- S Alderweireldt
- M Bansal
- S Bansal
- T Cornelis
- E A De Wolf
- X Janssen
- S Luyckx
- L Mucibello
- S Ochesanu
- B Roland
- R Rougny
- M Selvaggi
- H Van Haevermaet
- P Van Mechelen
- N Van Remortel
- A Van Spilbeeck
- F Blekman
- S Blyweert
- J D'Hondt
- R Gonzalez Suarez
- A Kalogeropoulos
- M Maes
- A Olbrechts
- S Tavernier
- W Van Doninck
- P Van Mulders
- G P Van Onsem
- I Villella
- B Clerbaux
- G De Lentdecker
- V Dero
- A P R Gay
- T Hreus
- A Léonard
- P E Marage
- A Mohammadi
- T Reis
- L Thomas
- C Vander Velde
- P Vanlaer
- J Wang
- V Adler
- K Beernaert
- A Cimmino
- S Costantini
- G Garcia
- M Grunewald
- B Klein
- J Lellouch
- A Marinov
- J Mccartin
- A A Ocampo Rios
- D Ryckbosch
- M Sigamani
- N Strobbe
- F Thyssen
- M Tytgat
- S Walsh
- E Yazgan
- N Zaganidis
- S Basegmez
- G Bruno
- R Castello
- L Ceard
- C Delaere
- T du Pree
- D Favart
- L Forthomme
- A Giammanco
- J Hollar
- V Lemaitre
- J Liao
- O Militaru
- C Nuttens
- D Pagano
- A Pin
- K Piotrzkowski
- J M Vizan Garcia
- N Beliy
- T Caebergs
- E Daubie
- G H Hammad
- G A Alves
- M Correa Martins Junior
- T Martins
- M E Pol
- M H G Souza
- W L Aldá Júnior
- W Carvalho
- J Chinellato
- A Custódio
- E M Da Costa
- D De Jesus Damiao
- C De Oliveira Martins
- S Fonseca De Souza
- H Malbouisson
- M Malek
- D Matos Figueiredo
- L Mundim
- H Nogima
- W L Prado Da Silva
- A Santoro
- L Soares Jorge
- A Sznajder
- E J Tonelli Manganote
- A Vilela Pereira
- T S Anjos
- C A Bernardes
- F A Dias
- T R Fernandez Perez Tomei
- E M Gregores
- C Lagana
- F Marinho
- P G Mercadante
- S F Novaes
- Sandra S Padula
- V Genchev
- P Iaydjiev
- S Piperov
- M Rodozov
- S Stoykova
- G Sultanov
- V Tcholakov
- R Trayanov
- M Vutova
- A Dimitrov
- R Hadjiiska
- V Kozhuharov
- L Litov
- B Pavlov
- P Petkov
- J G Bian
- G M Chen
- H S Chen
- C H Jiang
- D Liang
- S Liang
- X Meng
- J Tao
- X Wang
- Z Wang
- H Xiao
- M Xu
- J Zang
- Z Zhang
- C Asawatangtrakuldee
- Y Ban
- Y Guo
- Q Li
- W Li
- S Liu
- Y Mao
- S J Qian
- D Wang
- L Zhang
- W Zou
- C Avila
- C A Carrillo Montoya
- J P Gomez
- B Gomez Moreno
- A F Osorio Oliveros
- J C Sanabria
- N Godinovic
- D Lelas
- R Plestina
- D Polic
- I Puljak
- Z Antunovic
- M Kovac
- V Brigljevic
- S Duric
- K Kadija
- J Luetic
- D Mekterovic
- S Morovic
- L Tikvica
- A Attikis
- M Galanti
- G Mavromanolakis
- J Mousa
- C Nicolaou
- F Ptochos
- P A Razis
- M Finger
- M Finger
- Y Assran
- S Elgammal
- A Ellithi Kamel
- A M Kuotb Awad
- M A Mahmoud
- A Radi
- M Kadastik
- M Müntel
- M Murumaa
- M Raidal
- L Rebane
- A Tiko
- P Eerola
- G Fedi
- M Voutilainen
- J Härkönen
- A Heikkinen
- V Karimäki
- R Kinnunen
- M J Kortelainen
- T Lampén
- K Lassila-Perini
- S Lehti
- T Lindén
- P Luukka
- T Mäenpää
- T Peltola
- E Tuominen
- J Tuominiemi
- E Tuovinen
- D Ungaro
- L Wendland
- A Korpela
- T Tuuva
- M Besancon
- S Choudhury
- F Couderc
- M Dejardin
- D Denegri
- B Fabbro
- J L Faure
- F Ferri
- S Ganjour
- A Givernaud
- P Gras
- G Hamel de Monchenault
- P Jarry
- E Locci
- J Malcles
- L Millischer
- A Nayak
- J Rander
- A Rosowsky
- M Titov
- S Baffioni
- F Beaudette
- L Benhabib
- L Bianchini
- M Bluj
- P Busson
- C Charlot
- N Daci
- T Dahms
- M Dalchenko
- L Dobrzynski
- A Florent
- R Granier de Cassagnac
- M Haguenauer
- P Miné
- C Mironov
- I N Naranjo
- M Nguyen
- C Ochando
- P Paganini
- D Sabes
- R Salerno
- Y Sirois
- C Veelken
- A Zabi
- J-L Agram
- J Andrea
- D Bloch
- D Bodin
- J-M Brom
- M Cardaci
- E C Chabert
- C Collard
- E Conte
- F Drouhin
- J-C Fontaine
- D Gelé
- U Goerlach
- P Juillot
- A-C Le Bihan
- P Van Hove
- S Beauceron
- N Beaupere
- O Bondu
- G Boudoul
- S Brochet
- J Chasserat
- R Chierici
- D Contardo
- P Depasse
- H El Mamouni
- J Fay
- S Gascon
- M Gouzevitch
- B Ille
- T Kurca
- M Lethuillier
- L Mirabito
- S Perries
- L Sgandurra
- V Sordini
- Y Tschudi
- P Verdier
- S Viret
- Z Tsamalaidze
- C Autermann
- S Beranek
- B Calpas
- M Edelhoff
- L Feld
- N Heracleous
- O Hindrichs
- R Jussen
- K Klein
- J Merz
- A Ostapchuk
- A Perieanu
- F Raupach
- J Sammet
- S Schael
- D Sprenger
- H Weber
- B Wittmer
- V Zhukov
- M Ata
- J Caudron
- E Dietz-Laursonn
- D Duchardt
- M Erdmann
- R Fischer
- A Güth
- T Hebbeker
- C Heidemann
- K Hoepfner
- D Klingebiel
- P Kreuzer
- M Merschmeyer
- A Meyer
- M Olschewski
- K Padeken
- P Papacz
- H Pieta
- H Reithler
- S A Schmitz
- L Sonnenschein
- J Steggemann
- D Teyssier
- S Thüer
- M Weber
- M Bontenackels
- V Cherepanov
- Y Erdogan
- G Flügge
- H Geenen
- M Geisler
- W Haj Ahmad
- F Hoehle
- B Kargoll
- T Kress
- Y Kuessel
- J Lingemann
- A Nowack
- I M Nugent
- L Perchalla
- O Pooth
- P Sauerland
- A Stahl
- M Aldaya Martin
- I Asin
- N Bartosik
- J Behr
- W Behrenhoff
- U Behrens
- M Bergholz
- A Bethani
- K Borras
- A Burgmeier
- A Cakir
- L Calligaris
- A Campbell
- E Castro
- F Costanza
- D Dammann
- C Diez Pardos
- T Dorland
- G Eckerlin
- D Eckstein
- G Flucke
- A Geiser
- I Glushkov
- P Gunnellini
- S Habib
- J Hauk
- G Hellwig
- H Jung
- M Kasemann
- P Katsas
- C Kleinwort
- H Kluge
- A Knutsson
- M Krämer
- D Krücker
- E Kuznetsova
- W Lange
- J Leonard
- W Lohmann
- B Lutz
- R Mankel
- I Marfin
- M Marienfeld
- I-A Melzer-Pellmann
- A B Meyer
- J Mnich
- A Mussgiller
- S Naumann-Emme
- O Novgorodova
- F Nowak
- J Olzem
- H Perrey
- A Petrukhin
- D Pitzl
- A Raspereza
- P M Ribeiro Cipriano
- C Riedl
- E Ron
- M Rosin
- J Salfeld-Nebgen
- R Schmidt
- T Schoerner-Sadenius
- N Sen
- A Spiridonov
- M Stein
- R Walsh
- C Wissing
- V Blobel
- H Enderle
- J Erfle
- U Gebbert
- M Görner
- M Gosselink
- J Haller
- T Hermanns
- R S Höing
- K Kaschube
- G Kaussen
- H Kirschenmann
- R Klanner
- J Lange
- T Peiffer
- N Pietsch
- D Rathjens
- C Sander
- H Schettler
- P Schleper
- E Schlieckau
- A Schmidt
- M Schröder
- T Schum
- M Seidel
- J Sibille
- V Sola
- H Stadie
- G Steinbrück
- J Thomsen
- L Vanelderen
- C Barth
چکیده
The first measurement of vector-boson production associated with a top quark-antiquark pair in proton-proton collisions at sqrt[s] = 7 TeV is presented. The results are based on a data set corresponding to an integrated luminosity of 5.0 fb(-1), recorded by the CMS detector at the LHC in 2011. The measurement is performed in two independent channels through a trilepton analysis of ttZ events and a same-sign dilepton analysis of ttV (V = W or Z) events. In the trilepton channel a direct measurement of the ttZ cross section σ(ttZ) = 0.28(-0.11)(+0.14) (stat)(-0.03)(+0.06) (syst) pb is obtained. In the dilepton channel a measurement of the ttV cross section yields σ(ttV) = 0.43(-0.15)(+0.17) (stat)(-0.07)(+0.09) (syst) pb. These measurements have a significance, respectively, of 3.3 and 3.0 standard deviations from the background hypotheses and are compatible, within uncertainties, with the corresponding next-to-leading order predictions of 0.137(-0.016)(+0.012) and 0.306(-0.053)(+0.031) pb.
منابع مشابه
Measurement of the WW cross section in s = 7 TeV pp collisions with the ATLAS detector and limits on
The MIT Faculty has made this article openly available. Please share how this access benefits you. Your story matters. Measurement of the W W cross section in √ s = 7 TeV pp collisions with the ATLAS detector and limits on anomalous gauge couplings ✩ .ATLAS Collaboration a r t i c l e i n f o a b s t r a c t This Letter reports a measurement of the W W production cross section in √ s = 7 TeV pp...
متن کاملFiducial, total and differential cross-section measurements of t-channel single top-quark production in pp collisions at 8 TeV using data collected by the ATLAS detector
Detailed measurements of t-channel single topquark production are presented. They use 20.2 fb−1 of data collected by the ATLAS experiment in proton–proton collisions at a centre-of-mass energy of 8 TeV at the LHC. Total, fiducial and differential cross-sections are measured for both top-quark and top-antiquark production. The fiducial crosssection is measured with a precision of 5.8% (top quark...
متن کاملMeasurement of the top quark cross - section in the single - lepton channel in pp collisions at √ s = 7 TeV using kinematic fits and b - tagging information with the ATLAS Experiment
The measurement of the t ¯ t production cross-section in the single-lepton channel in pp collisions at a centre-of-mass energy √ s =7 TeV is presented. The analysis is based on a multivariate discriminant distribution in 3, 4 and ≥ 5 jet bins using three kinematic variables and b-tagging information. With a data sample of about 35 pb −1 recorded by ATLAS in 2010 the inclusive top quark producti...
متن کاملDetermination of the top-quark pole mass and strong coupling constant from the ttbar production cross section in pp collisions at sqrt(s) = 7 TeV
The inclusive cross section for top-quark pair production measured by the CMS experiment in proton-proton collisions at a center-of-mass energy of 7 TeV is compared to the QCD prediction at next-to-next-to-leading order with various parton distribution functions to determine the top-quark pole mass, m t , or the strong coupling constant, αS. With the parton distribution function set NNPDF2.3, a...
متن کاملMeasurement of the helicity of W bosons in top quark decays
We use the transverse momentum spectrum of leptons in the decay chain t-->bW with W-->lnu to measure the helicity of the W bosons in the top quark rest frame. Our measurement uses a t&tmacr; sample isolated in 106+/-4 pb(-1) of data collected in p&pmacr; collisions at sqrt[s] = 1.8 TeV with the CDF detector at the Fermilab Tevatron. Assuming a standard V-A weak decay, we find that the fraction ...
متن کاملMeasurement of the mass difference between top quark and antiquark in pp collisions at √s=8 TeV
Article history: Received 29 October 2016 Received in revised form 9 April 2017 Accepted 13 April 2017 Available online 19 April 2017 Editor: M. Doser
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
- Physical review letters
دوره 110 17 شماره
صفحات -
تاریخ انتشار 2013