Search for pair produced fourth-generation up-type quarks in pp collisions at root s=7 TeV with a lepton in the final state
2012
Autori
Chatrchyan, S.Adžić, Petar
Đorđević, Miloš
Ekmedžić, Marko
Krpić, D.
Milošević, Jovan
Milenović, Predrag
Reković, Vladimir
CMS Collaboration (ukupan broj autora: 2126)
Članak u časopisu
Metapodaci
Prikaz svih podataka o dokumentuApstrakt
The results of a search for the pair production of a fourth-generation up-type quark (t) in proton-proton collisions at root s = 7 TeV are presented, using data corresponding to an integrated luminosity of about 5.0 fb(-1) collected by the Compact Muon Solenoid experiment at the LHC. The t quark is assumed to decay exclusively to a W boson and a b quark. Events with a single isolated electron or muon, missing transverse momentum, and at least four hadronic jets, of which at least one must be identified as a b jet, are selected. No significant excess of events over standard model expectations is observed. Upper limits for the t(t) over bar production cross section at 95% confidence level are set as a function of t mass, and t-quark production for masses below 570 GeV is excluded. The search is equally sensitive to nonchiral heavy quarks decaying to Wb. In this case, the results can be interpreted as upper limits on the production cross section times the branching fraction to Wb. (C) 201...2 CERN. Published by Elsevier B.V. All rights reserved.
Ključne reči:
CMS / PhysicsIzvor:
Physics Letters B, 2012, 718, 2, 307-328Finansiranje / projekti:
- FMSR (Austria), FNRS (Belgium), FWO (Belgium), CNPq (Brazil), CAPES, (Brazil), FAPERJ, (Brazil), FAPESP (Brazil), MES (Bulgaria), CERN, CAS, (China), MoST, (China), NSFC (China), COLCIENCIAS (Colombia), MSES (Croatia), RPF (Cyprus), MoER, (Estonia) [SF0690030s09], ERDF (Estonia), Academy of Finland, MEC, (Finland), HIP (Finland), CEA, (France), CNRS/IN2P3 (France), BMBF, Germany, DFG, (Germany), HGF (Germany), GSRT (Greece), OTKA (Hungary), NKTH (Hungary), DAE (India), DST (India), IPM (Iran), SFI (Ireland), INFN (Italy), NRF (Republic of Korea), WCU (Republic of Korea), LAS (Lithuania), CINVESTAV (Mexico), CONACYT (Mexico), SEP (Mexico), UASLP-FAI (Mexico), MSI (New Zealand), PAEC (Pakistan), MSHE (Poland), NSC (Poland), FCT (Portugal), JINR (Armenia), JINR, Belarus, JINR, Georgia, JINR, Ukraine, JINR, Uzbekistan, MON (Russia), RosAtom (Russia), RAS (Russia), RFBR (Russia), MSTD (Serbia), MICINN (Spain), CPAN (Spain), NSC (Taipei), TUBITAK (Turkey), TAEK (Turkey), STFC (United Kingdom), DOE, NSF (USA), Swiss Funding Agencies (Switzerland)
DOI: 10.1016/j.physletb.2012.10.038
ISSN: 0370-2693; 1873-2445
WoS: 000312687700011
Scopus: 2-s2.0-84869800109
Kolekcije
Institucija/grupa
VinčaTY - JOUR AU - Chatrchyan, S. AU - Adžić, Petar AU - Đorđević, Miloš AU - Ekmedžić, Marko AU - Krpić, D. AU - Milošević, Jovan AU - Milenović, Predrag AU - Reković, Vladimir PY - 2012 UR - https://vinar.vin.bg.ac.rs/handle/123456789/5219 AB - The results of a search for the pair production of a fourth-generation up-type quark (t) in proton-proton collisions at root s = 7 TeV are presented, using data corresponding to an integrated luminosity of about 5.0 fb(-1) collected by the Compact Muon Solenoid experiment at the LHC. The t quark is assumed to decay exclusively to a W boson and a b quark. Events with a single isolated electron or muon, missing transverse momentum, and at least four hadronic jets, of which at least one must be identified as a b jet, are selected. No significant excess of events over standard model expectations is observed. Upper limits for the t(t) over bar production cross section at 95% confidence level are set as a function of t mass, and t-quark production for masses below 570 GeV is excluded. The search is equally sensitive to nonchiral heavy quarks decaying to Wb. In this case, the results can be interpreted as upper limits on the production cross section times the branching fraction to Wb. (C) 2012 CERN. Published by Elsevier B.V. All rights reserved. T2 - Physics Letters B T1 - Search for pair produced fourth-generation up-type quarks in pp collisions at root s=7 TeV with a lepton in the final state VL - 718 IS - 2 SP - 307 EP - 328 DO - 10.1016/j.physletb.2012.10.038 ER -
@article{ author = "Chatrchyan, S. and Adžić, Petar and Đorđević, Miloš and Ekmedžić, Marko and Krpić, D. and Milošević, Jovan and Milenović, Predrag and Reković, Vladimir", year = "2012", abstract = "The results of a search for the pair production of a fourth-generation up-type quark (t) in proton-proton collisions at root s = 7 TeV are presented, using data corresponding to an integrated luminosity of about 5.0 fb(-1) collected by the Compact Muon Solenoid experiment at the LHC. The t quark is assumed to decay exclusively to a W boson and a b quark. Events with a single isolated electron or muon, missing transverse momentum, and at least four hadronic jets, of which at least one must be identified as a b jet, are selected. No significant excess of events over standard model expectations is observed. Upper limits for the t(t) over bar production cross section at 95% confidence level are set as a function of t mass, and t-quark production for masses below 570 GeV is excluded. The search is equally sensitive to nonchiral heavy quarks decaying to Wb. In this case, the results can be interpreted as upper limits on the production cross section times the branching fraction to Wb. (C) 2012 CERN. Published by Elsevier B.V. All rights reserved.", journal = "Physics Letters B", title = "Search for pair produced fourth-generation up-type quarks in pp collisions at root s=7 TeV with a lepton in the final state", volume = "718", number = "2", pages = "307-328", doi = "10.1016/j.physletb.2012.10.038" }
Chatrchyan, S., Adžić, P., Đorđević, M., Ekmedžić, M., Krpić, D., Milošević, J., Milenović, P.,& Reković, V.. (2012). Search for pair produced fourth-generation up-type quarks in pp collisions at root s=7 TeV with a lepton in the final state. in Physics Letters B, 718(2), 307-328. https://doi.org/10.1016/j.physletb.2012.10.038
Chatrchyan S, Adžić P, Đorđević M, Ekmedžić M, Krpić D, Milošević J, Milenović P, Reković V. Search for pair produced fourth-generation up-type quarks in pp collisions at root s=7 TeV with a lepton in the final state. in Physics Letters B. 2012;718(2):307-328. doi:10.1016/j.physletb.2012.10.038 .
Chatrchyan, S., Adžić, Petar, Đorđević, Miloš, Ekmedžić, Marko, Krpić, D., Milošević, Jovan, Milenović, Predrag, Reković, Vladimir, "Search for pair produced fourth-generation up-type quarks in pp collisions at root s=7 TeV with a lepton in the final state" in Physics Letters B, 718, no. 2 (2012):307-328, https://doi.org/10.1016/j.physletb.2012.10.038 . .