نتایج جستجو برای: quark model

تعداد نتایج: 2123457  

Journal: :Physical review. D, Particles and fields 1994
Jakob

Independent multiple scattering (‘Landshoff’) contributions to proton-proton elastic scattering at wide angles are calculated in the quark-diquark model. Results confirm previous observations about the magnitude of these contributions. The use of the quark-diquark model extends the applicability of perturbative QCD calculations down to lower values of momentum transfer substantially. 12.38.Bx, ...

2001
Kevin Cahill

In the physical vacuum of QCD, the energy density of lightquark fields strongly coupled to slowly varying gluon fields can be negative. The states that drive this energy density lowest are condensates of pairs of quarks and antiquarks of nearly opposite momenta. These quark-antiquark condensates break chiral symmetry.

Journal: :Zeitschrift für Physik C Particles and Fields 1995

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شهید بهشتی - دانشکده علوم 1386

چکیده ندارد.

Journal: :Progress of Theoretical Physics 1976

Journal: :Physical review letters 2011
T Aaltonen B Álvarez González S Amerio D Amidei A Anastassov A Annovi J Antos G Apollinari J A Appel A Apresyan T Arisawa A Artikov J Asaadi W Ashmanskas B Auerbach A Aurisano F Azfar W Badgett A Barbaro-Galtieri V E Barnes B A Barnett P Barria P Bartos M Bauce G Bauer F Bedeschi D Beecher S Behari G Bellettini J Bellinger D Benjamin A Beretvas A Bhatti M Binkley D Bisello I Bizjak K R Bland C Blocker B Blumenfeld A Bocci A Bodek D Bortoletto J Boudreau A Boveia B Brau L Brigliadori A Brisuda C Bromberg E Brucken M Bucciantonio J Budagov H S Budd S Budd K Burkett G Busetto P Bussey A Buzatu S Cabrera C Calancha S Camarda M Campanelli M Campbell F Canelli A Canepa B Carls D Carlsmith R Carosi S Carrillo S Carron B Casal M Casarsa A Castro P Catastini D Cauz V Cavaliere M Cavalli-Sforza A Cerri L Cerrito Y C Chen M Chertok G Chiarelli G Chlachidze F Chlebana K Cho D Chokheli J P Chou W H Chung Y S Chung C I Ciobanu M A Ciocci A Clark D Clark G Compostella M E Convery J Conway M Corbo M Cordelli C A Cox D J Cox F Crescioli C Cuenca Almenar J Cuevas R Culbertson D Dagenhart N d'Ascenzo M Datta P de Barbaro S De Cecco G De Lorenzo M Dell'Orso C Deluca L Demortier J Deng M Deninno F Devoto M d'Errico A Di Canto B Di Ruzza J R Dittmann M D'Onofrio S Donati P Dong T Dorigo K Ebina A Elagin A Eppig R Erbacher D Errede S Errede N Ershaidat R Eusebi H C Fang S Farrington M Feindt J P Fernandez C Ferrazza R Field G Flanagan R Forrest M J Frank M Franklin J C Freeman I Furic M Gallinaro J Galyardt J E Garcia A F Garfinkel P Garosi H Gerberich E Gerchtein S Giagu V Giakoumopoulou P Giannetti K Gibson C M Ginsburg N Giokaris P Giromini M Giunta G Giurgiu V Glagolev D Glenzinski M Gold D Goldin N Goldschmidt A Golossanov G Gomez G Gomez-Ceballos M Goncharov O González I Gorelov A T Goshaw K Goulianos A Gresele S Grinstein C Grosso-Pilcher R C Group J Guimaraes da Costa Z Gunay-Unalan C Haber S R Hahn E Halkiadakis A Hamaguchi J Y Han F Happacher K Hara D Hare M Hare R F Harr K Hatakeyama C Hays M Heck J Heinrich M Herndon S Hewamanage D Hidas A Hocker W Hopkins D Horn S Hou R E Hughes M Hurwitz U Husemann N Hussain M Hussein J Huston G Introzzi M Iori A Ivanov E James D Jang B Jayatilaka E J Jeon M K Jha S Jindariani W Johnson M Jones K K Joo S Y Jun T R Junk T Kamon P E Karchin Y Kato W Ketchum J Keung V Khotilovich B Kilminster D H Kim H S Kim H W Kim J E Kim M J Kim S B Kim S H Kim Y K Kim N Kimura S Klimenko K Kondo D J Kong J Konigsberg A Korytov A V Kotwal M Kreps J Kroll D Krop N Krumnack M Kruse V Krutelyov T Kuhr M Kurata S Kwang A T Laasanen S Lami S Lammel M Lancaster R L Lander K Lannon A Lath G Latino I Lazzizzera T LeCompte E Lee H S Lee J S Lee S W Lee S Leo S Leone J D Lewis C-J Lin J Linacre M Lindgren E Lipeles A Lister D O Litvintsev C Liu Q Liu T Liu S Lockwitz N S Lockyer A Loginov D Lucchesi J Lueck P Lujan P Lukens G Lungu J Lys R Lysak R Madrak K Maeshima K Makhoul P Maksimovic S Malik G Manca A Manousakis-Katsikakis F Margaroli C Marino M Martínez R Martínez-Ballarín P Mastrandrea M Mathis M E Mattson P Mazzanti K S McFarland P McIntyre R McNulty A Mehta P Mehtala A Menzione C Mesropian T Miao D Mietlicki A Mitra H Miyake S Moed N Moggi M N Mondragon C S Moon R Moore M J Morello J Morlock P Movilla Fernandez A Mukherjee Th Muller P Murat M Mussini J Nachtman Y Nagai J Naganoma I Nakano A Napier J Nett C Neu M S Neubauer J Nielsen L Nodulman O Norniella E Nurse L Oakes S H Oh Y D Oh I Oksuzian T Okusawa R Orava L Ortolan S Pagan Griso C Pagliarone E Palencia V Papadimitriou A A Paramonov J Patrick G Pauletta M Paulini C Paus D E Pellett A Penzo T J Phillips G Piacentino E Pianori J Pilot K Pitts C Plager L Pondrom K Potamianos O Poukhov F Prokoshin A Pronko F Ptohos E Pueschel G Punzi J Pursley A Rahaman V Ramakrishnan N Ranjan I Redondo P Renton M Rescigno F Rimondi L Ristori A Robson T Rodrigo T Rodriguez E Rogers S Rolli R Roser M Rossi F Ruffini A Ruiz J Russ V Rusu A Safonov W K Sakumoto L Santi L Sartori K Sato V Saveliev A Savoy-Navarro P Schlabach A Schmidt E E Schmidt M P Schmidt M Schmitt T Schwarz L Scodellaro A Scribano F Scuri A Sedov S Seidel Y Seiya A Semenov F Sforza A Sfyrla S Z Shalhout T Shears P F Shepard M Shimojima S Shiraishi M Shochet I Shreyber A Simonenko P Sinervo A Sissakian K Sliwa J R Smith F D Snider A Soha S Somalwar V Sorin P Squillacioti M Stanitzki R St Denis B Stelzer O Stelzer-Chilton D Stentz J Strologas G L Strycker Y Sudo A Sukhanov I Suslov K Takemasa Y Takeuchi J Tang M Tecchio P K Teng J Thom J Thome G A Thompson E Thomson P Ttito-Guzmán S Tkaczyk D Toback S Tokar K Tollefson T Tomura D Tonelli S Torre D Torretta P Totaro M Trovato Y Tu N Turini F Ukegawa S Uozumi A Varganov E Vataga F Vázquez G Velev C Vellidis M Vidal I Vila R Vilar M Vogel G Volpi P Wagner R L Wagner T Wakisaka R Wallny S M Wang A Warburton D Waters M Weinberger W C Wester B Whitehouse D Whiteson A B Wicklund E Wicklund S Wilbur F Wick H H Williams J S Wilson P Wilson B L Winer P Wittich S Wolbers H Wolfe T Wright X Wu Z Wu K Yamamoto J Yamaoka T Yang U K Yang

We present the results of a search for pair production of a heavy toplike (t') quark decaying to Wq final states using data corresponding to an integrated luminosity of 5.6 fb(-1) collected by the CDF II detector in pp collisions at √s=1.96 TeV. We perform parallel searches for t'→Wb and t'→Wq (where q is a generic down-type quark) in events containing a lepton and four or more jets. By perform...

D Neelima, V U M Rao,

Bianchi type-VI0 space time with strange quark matter attached to string cloud in Nordtvedt [1] general scalar tensor theory of gravitation with the help of a special case proposed by Schwinger [2] is obtained. The field equations have been solved by using the anisotropy feature of the universe in the Bianchi type-VI0 space time. Some important features of the model, thus obtained, have been di...

Journal: :Progress of Theoretical Physics 1972

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