Search for a Vectorlike Quark with Charge 2/3 in t plus Z Events from pp Collisions at root s 7 TeV
2011
Autori
Chatrchyan, S.Adžić, Petar
Đorđević, Miloš
Krpić, D.
Milošević, Jovan
Milenović, Predrag
Reković, Vladimir
CMS Collaboration (ukupan broj autora: 2253)
Članak u časopisu
Metapodaci
Prikaz svih podataka o dokumentuApstrakt
A search for pair-produced heavy vectorlike charge-2/3 quarks, T, in pp collisions at a center-of-mass energy of 7 TeV, is performed with the CMS detector at the LHC. Events consistent with the flavor-changing-neutral-current decay of a T quark to a top quark and a Z boson are selected by requiring two leptons from the Z-boson decay, as well as an additional isolated charged lepton. In a data sample corresponding to an integrated luminosity of 1.14 fb(-1), the number of observed events is found to be consistent with the standard model background prediction. Assuming a branching fraction of 100% for the decay T - GT tZ, a T quark with a mass less than 475 GeV/c(2) is excluded at the 95% confidence level.
Izvor:
Physical Review Letters, 2011, 107, 27Finansiranje / projekti:
- FMSR (Austria), FNRS, FWO (Belgium), CNPq, CAPES, FAPERJ, FAPESP (Brazil), MES (Bulgaria), CERN, CAS, MoST, NSFC (China), COLCIENCIAS (Colombia), MSES (Croatia), RPF (Cyprus), Academy of Sciences, NICPB (Estonia), Academy of Finland, ME, HIP (Finland), CEA, CNRS/IN2P3 (France), BMBF, Germany, DFG, HGF (Germany), GSRT (Greece), OTKA, NKTH (Hungary), DAE, DST (India), IPM (Iran), SFI (Ireland), INFN (Italy), NRF, WCU (Korea), LAS (Lithuania), CINVESTAV, CONACYT, SEP, UASLP-FAI (Mexico), PAEC (Pakistan), SCSR (Poland), FCT (Portugal), JINR (Armenia), MST, MAE (Russia), MSTD (Serbia), MICINN, CPAN (Spain), Swiss Funding Agencies (Switzerland), NSC (Taipei), TUBITAK, TAEK (Turkey), STFC (United Kingdom), DOE, NSF (U.S.), JINR (Belarus), JINR (Georgia), JINR (Ukraine), JINR (Uzbekistan)
DOI: 10.1103/PhysRevLett.107.271802
ISSN: 0031-9007; 1079-7114
PubMed: 22243304
WoS: 000298611000010
Scopus: 2-s2.0-84855337715
Kolekcije
Institucija/grupa
VinčaTY - JOUR AU - Chatrchyan, S. AU - Adžić, Petar AU - Đorđević, Miloš AU - Krpić, D. AU - Milošević, Jovan AU - Milenović, Predrag AU - Reković, Vladimir PY - 2011 UR - https://vinar.vin.bg.ac.rs/handle/123456789/4626 AB - A search for pair-produced heavy vectorlike charge-2/3 quarks, T, in pp collisions at a center-of-mass energy of 7 TeV, is performed with the CMS detector at the LHC. Events consistent with the flavor-changing-neutral-current decay of a T quark to a top quark and a Z boson are selected by requiring two leptons from the Z-boson decay, as well as an additional isolated charged lepton. In a data sample corresponding to an integrated luminosity of 1.14 fb(-1), the number of observed events is found to be consistent with the standard model background prediction. Assuming a branching fraction of 100% for the decay T - GT tZ, a T quark with a mass less than 475 GeV/c(2) is excluded at the 95% confidence level. T2 - Physical Review Letters T1 - Search for a Vectorlike Quark with Charge 2/3 in t plus Z Events from pp Collisions at root s 7 TeV VL - 107 IS - 27 DO - 10.1103/PhysRevLett.107.271802 ER -
@article{ author = "Chatrchyan, S. and Adžić, Petar and Đorđević, Miloš and Krpić, D. and Milošević, Jovan and Milenović, Predrag and Reković, Vladimir", year = "2011", abstract = "A search for pair-produced heavy vectorlike charge-2/3 quarks, T, in pp collisions at a center-of-mass energy of 7 TeV, is performed with the CMS detector at the LHC. Events consistent with the flavor-changing-neutral-current decay of a T quark to a top quark and a Z boson are selected by requiring two leptons from the Z-boson decay, as well as an additional isolated charged lepton. In a data sample corresponding to an integrated luminosity of 1.14 fb(-1), the number of observed events is found to be consistent with the standard model background prediction. Assuming a branching fraction of 100% for the decay T - GT tZ, a T quark with a mass less than 475 GeV/c(2) is excluded at the 95% confidence level.", journal = "Physical Review Letters", title = "Search for a Vectorlike Quark with Charge 2/3 in t plus Z Events from pp Collisions at root s 7 TeV", volume = "107", number = "27", doi = "10.1103/PhysRevLett.107.271802" }
Chatrchyan, S., Adžić, P., Đorđević, M., Krpić, D., Milošević, J., Milenović, P.,& Reković, V.. (2011). Search for a Vectorlike Quark with Charge 2/3 in t plus Z Events from pp Collisions at root s 7 TeV. in Physical Review Letters, 107(27). https://doi.org/10.1103/PhysRevLett.107.271802
Chatrchyan S, Adžić P, Đorđević M, Krpić D, Milošević J, Milenović P, Reković V. Search for a Vectorlike Quark with Charge 2/3 in t plus Z Events from pp Collisions at root s 7 TeV. in Physical Review Letters. 2011;107(27). doi:10.1103/PhysRevLett.107.271802 .
Chatrchyan, S., Adžić, Petar, Đorđević, Miloš, Krpić, D., Milošević, Jovan, Milenović, Predrag, Reković, Vladimir, "Search for a Vectorlike Quark with Charge 2/3 in t plus Z Events from pp Collisions at root s 7 TeV" in Physical Review Letters, 107, no. 27 (2011), https://doi.org/10.1103/PhysRevLett.107.271802 . .