Search for same-sign top-quark pair production at root s=7 TeV and limits on flavour changing neutral currents in the top sector
2011
Autori
Chatrchyan, S.Adžić, Petar
Đorđević, Miloš
Krpić, D.
Milošević, Jovan
Milenović, Predrag
Reković, Vladimir
CMS Collaboration (ukupan broj autora: 2210)
Članak u časopisu
Metapodaci
Prikaz svih podataka o dokumentuApstrakt
An inclusive search for same-sign top-quark pair production in pp collisions at root s = 7 TeV is performed using a data sample recorded with the CMS detector in 2010, corresponding to an integrated luminosity of 35 pb(-1). This analysis is motivated by recent studies of p (p) over bar - GT t (t) over bar reporting mass-dependent forward-backward asymmetries larger than expected from the standard model. These asymmetries could be due to Flavor Changing Neutral Currents (FCNC) in the top sector induced by t -channel exchange of a massive neutral vector boson (Z). Models with such a Z also predict enhancement of same-sign top-pair production in pp or pp collisions. Limits are set as a function of the Z mass and its couplings to u and t quarks. These limits disfavour the FCNC interpretation of the Tevatron results.
Ključne reči:
Hadron-Hadron ScatteringIzvor:
Journal of High Energy Physics, 2011, 8Finansiranje / projekti:
- FMSR (Austria), FNRS (Belgium), FWO (Belgium), CNPq (Brazil), CAPES (Brazil), FAPERJ (Brazil), FAPESP (Brazil), MES (Bulgaria), CERN (China), CAS (China), MoST (China), NSFC (China), COLCIEN-CIAS (Colombia), MSES (Croatia), RPF (Cyprus), Academy of Sciences (Estonia), NICPB (Estonia), Academy of Finland, ME (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 (Korea), WCU (Korea), LAS (Lithuania), CINVESTAV (Mexico), CONACYT (Mexico), SEP (Mexico), UASLP-FAI (Mexico), PAEC (Pakistan), SCSR (Poland), FCT (Portugal), JINR (Armenia), JINR (Belarus), JINR (Georgia), JINR (Ukraine), JINR (Uzbekistan), MST (Russia), MAE (Russia), MSTD (Serbia), MICINN (Spain), CPAN (Spain), Swiss Funding Agencies (Switzerland), NSC (Taipei), TUBITAK (Turkey), TAEK (Turkey), STFC (United Kingdom), DOE (USA), NSF (USA)
DOI: 10.1007/JHEP08(2011)005
ISSN: 1029-8479
WoS: 000294901400077
Scopus: 2-s2.0-80053159756
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/123456789/4486 AB - An inclusive search for same-sign top-quark pair production in pp collisions at root s = 7 TeV is performed using a data sample recorded with the CMS detector in 2010, corresponding to an integrated luminosity of 35 pb(-1). This analysis is motivated by recent studies of p (p) over bar - GT t (t) over bar reporting mass-dependent forward-backward asymmetries larger than expected from the standard model. These asymmetries could be due to Flavor Changing Neutral Currents (FCNC) in the top sector induced by t -channel exchange of a massive neutral vector boson (Z). Models with such a Z also predict enhancement of same-sign top-pair production in pp or pp collisions. Limits are set as a function of the Z mass and its couplings to u and t quarks. These limits disfavour the FCNC interpretation of the Tevatron results. T2 - Journal of High Energy Physics T1 - Search for same-sign top-quark pair production at root s=7 TeV and limits on flavour changing neutral currents in the top sector IS - 8 DO - 10.1007/JHEP08(2011)005 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 = "An inclusive search for same-sign top-quark pair production in pp collisions at root s = 7 TeV is performed using a data sample recorded with the CMS detector in 2010, corresponding to an integrated luminosity of 35 pb(-1). This analysis is motivated by recent studies of p (p) over bar - GT t (t) over bar reporting mass-dependent forward-backward asymmetries larger than expected from the standard model. These asymmetries could be due to Flavor Changing Neutral Currents (FCNC) in the top sector induced by t -channel exchange of a massive neutral vector boson (Z). Models with such a Z also predict enhancement of same-sign top-pair production in pp or pp collisions. Limits are set as a function of the Z mass and its couplings to u and t quarks. These limits disfavour the FCNC interpretation of the Tevatron results.", journal = "Journal of High Energy Physics", title = "Search for same-sign top-quark pair production at root s=7 TeV and limits on flavour changing neutral currents in the top sector", number = "8", doi = "10.1007/JHEP08(2011)005" }
Chatrchyan, S., Adžić, P., Đorđević, M., Krpić, D., Milošević, J., Milenović, P.,& Reković, V.. (2011). Search for same-sign top-quark pair production at root s=7 TeV and limits on flavour changing neutral currents in the top sector. in Journal of High Energy Physics(8). https://doi.org/10.1007/JHEP08(2011)005
Chatrchyan S, Adžić P, Đorđević M, Krpić D, Milošević J, Milenović P, Reković V. Search for same-sign top-quark pair production at root s=7 TeV and limits on flavour changing neutral currents in the top sector. in Journal of High Energy Physics. 2011;(8). doi:10.1007/JHEP08(2011)005 .
Chatrchyan, S., Adžić, Petar, Đorđević, Miloš, Krpić, D., Milošević, Jovan, Milenović, Predrag, Reković, Vladimir, "Search for same-sign top-quark pair production at root s=7 TeV and limits on flavour changing neutral currents in the top sector" in Journal of High Energy Physics, no. 8 (2011), https://doi.org/10.1007/JHEP08(2011)005 . .