Search for anomalous single top quark production in association with a photon in pp collisions at root s=8 TeV
Autori
Khachatryan, V.Adžić, Petar
Milošević, Jovan
Reković, Vladimir
Đorđević, Miloš
Milenović, Predrag
CMS Collaboration (ukupan broj autora: 2308)
Članak u časopisu (Objavljena verzija)
Metapodaci
Prikaz svih podataka o dokumentuApstrakt
The result of a search for flavor changing neutral currents (FCNC) through single top quark production in association with a photon is presented. The study is based on proton-proton collisions at a center-of-mass energy of 8 TeV using data collected with the CMS detector at the LHC, corresponding to an integrated luminosity of 19.8 fb(-1). The search for t gamma events where t - GT Wb and W - GT mu nu is conducted in final states with a muon, a photon, at least one hadronic jet with at most one being consistent with originating from a bottom quark, and missing transverse momentum. No evidence of single top quark production in association with a photon through a FCNC is observed. Upper limits at the 95% confidence level are set on the tu gamma and tc gamma anomalous couplings and translated into upper limits on the branching fraction of the FCNC top quark decays: B (t - GT u gamma) LT 1.3 x 10(-4) and B(t - GT c gamma) LT 1.7 x 10(-3). Upper limits are also set on the cross section of a...ssociated t gamma production in a restricted phase-space region. These are the most stringent limits currently available.
Ključne reči:
Flavour Changing Neutral Currents / Hadron-Hadron scattering (experiments) / Top physicsIzvor:
Journal of High Energy Physics, 2016, 4Finansiranje / projekti:
- BMWFW (Austria), FWF (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), CSF (Croatia), RPF (Cyprus), MoER (Estonia), ERC IUT (Estonia), ERDF (Estonia), Academy of Finland, MEC (Finland), HIP (Finland), CEA (France), CNRS/IN2P3 (France), BMBF, Germany, DFG (Germany), HGF (Germany), GSRT (Greece), OTKA (Hungary), NIH (Hungary), DAE (India), DST (India), IPM (Iran), SFI (Ireland), INFN (Italy), MSIP (Republic of Korea), NRF (Republic of Korea), LAS (Lithuania), MOE (Malaysia), UM (Malaysia), CINVESTAV (Mexico), CONACYT (Mexico), SEP (Mexico), UASLP-FAI (Mexico), MBIE (New Zealand), PAEC (Pakistan), MSHE (Poland), NSC (Poland), FCT (Portugal), JINR (Dubna), MON (Russia), RosAtom (Russia), RAS (Russia), RFBR (Russia), MESTD (Serbia), SEIDI (Spain), CPAN (Spain), Swiss Funding Agencies (Switzerland), MST (Taipei), ThEPCenter (Thailand), IPST (Thailand), STAR (Thailand), NSTDA (Thailand), TUBITAK (Turkey), TAEK (Turkey), NASU (Ukraine), SFFR (Ukraine), STFC (United Kingdom), DOE (U.S.A.), NSF (U.S.A.), Marie-Curie program (European Union), European Research Council (European Union), EPLANET (European Union), Leventis Foundation, A.P. Sloan Foundation, Alexander von Humboldt Foundation, Belgian Federal Science Policy Office, Fonds pour la Formation a la Recherche dans lIndustrie et dans lAgriculture (FRIA-Belgium), Agentschap voor Innovatie door Wetenschap en Technologie (IWT-Belgium), Ministry of Education, Youth and Sports (MEYS) of the Czech Republic, Council of Science and Industrial Research, India, HOMING PLUS program of the Foundation for Polish Science, European Union, Regional Development Fund, OPUS program of the National Science Center (Poland), Compagnia di San Paolo (Torino), MIUR (Italy) [20108T4XTM], EU-ESF, Greek NSRF, National Priorities Research Program, Qatar National Research Fund, Rachadapisek Sompot Fund, Chulalongkorn University (Thailand), Welch Foundation [C-1845]
DOI: 10.1007/JHEP04(2016)035
ISSN: 1029-8479
WoS: 000373855400001
Scopus: 2-s2.0-84962811902
Kolekcije
Institucija/grupa
VinčaTY - JOUR AU - Khachatryan, V. AU - Adžić, Petar AU - Milošević, Jovan AU - Reković, Vladimir AU - Đorđević, Miloš AU - Milenović, Predrag PY - 2016 UR - https://vinar.vin.bg.ac.rs/handle/123456789/1008 AB - The result of a search for flavor changing neutral currents (FCNC) through single top quark production in association with a photon is presented. The study is based on proton-proton collisions at a center-of-mass energy of 8 TeV using data collected with the CMS detector at the LHC, corresponding to an integrated luminosity of 19.8 fb(-1). The search for t gamma events where t - GT Wb and W - GT mu nu is conducted in final states with a muon, a photon, at least one hadronic jet with at most one being consistent with originating from a bottom quark, and missing transverse momentum. No evidence of single top quark production in association with a photon through a FCNC is observed. Upper limits at the 95% confidence level are set on the tu gamma and tc gamma anomalous couplings and translated into upper limits on the branching fraction of the FCNC top quark decays: B (t - GT u gamma) LT 1.3 x 10(-4) and B(t - GT c gamma) LT 1.7 x 10(-3). Upper limits are also set on the cross section of associated t gamma production in a restricted phase-space region. These are the most stringent limits currently available. T2 - Journal of High Energy Physics T1 - Search for anomalous single top quark production in association with a photon in pp collisions at root s=8 TeV IS - 4 DO - 10.1007/JHEP04(2016)035 ER -
@article{ author = "Khachatryan, V. and Adžić, Petar and Milošević, Jovan and Reković, Vladimir and Đorđević, Miloš and Milenović, Predrag", year = "2016", abstract = "The result of a search for flavor changing neutral currents (FCNC) through single top quark production in association with a photon is presented. The study is based on proton-proton collisions at a center-of-mass energy of 8 TeV using data collected with the CMS detector at the LHC, corresponding to an integrated luminosity of 19.8 fb(-1). The search for t gamma events where t - GT Wb and W - GT mu nu is conducted in final states with a muon, a photon, at least one hadronic jet with at most one being consistent with originating from a bottom quark, and missing transverse momentum. No evidence of single top quark production in association with a photon through a FCNC is observed. Upper limits at the 95% confidence level are set on the tu gamma and tc gamma anomalous couplings and translated into upper limits on the branching fraction of the FCNC top quark decays: B (t - GT u gamma) LT 1.3 x 10(-4) and B(t - GT c gamma) LT 1.7 x 10(-3). Upper limits are also set on the cross section of associated t gamma production in a restricted phase-space region. These are the most stringent limits currently available.", journal = "Journal of High Energy Physics", title = "Search for anomalous single top quark production in association with a photon in pp collisions at root s=8 TeV", number = "4", doi = "10.1007/JHEP04(2016)035" }
Khachatryan, V., Adžić, P., Milošević, J., Reković, V., Đorđević, M.,& Milenović, P.. (2016). Search for anomalous single top quark production in association with a photon in pp collisions at root s=8 TeV. in Journal of High Energy Physics(4). https://doi.org/10.1007/JHEP04(2016)035
Khachatryan V, Adžić P, Milošević J, Reković V, Đorđević M, Milenović P. Search for anomalous single top quark production in association with a photon in pp collisions at root s=8 TeV. in Journal of High Energy Physics. 2016;(4). doi:10.1007/JHEP04(2016)035 .
Khachatryan, V., Adžić, Petar, Milošević, Jovan, Reković, Vladimir, Đorđević, Miloš, Milenović, Predrag, "Search for anomalous single top quark production in association with a photon in pp collisions at root s=8 TeV" in Journal of High Energy Physics, no. 4 (2016), https://doi.org/10.1007/JHEP04(2016)035 . .