Search for Flavor-Changing Neutral Currents in Top-Quark Decays T -> Zq in Pp Collisions at Root S=8 Tev
| dc.contributor.author | Karapınar, Güler | |
| dc.coverage.doi | 10.1103/PhysRevLett.112.171802 | |
| dc.date.accessioned | 2021-01-24T18:47:19Z | |
| dc.date.available | 2021-01-24T18:47:19Z | |
| dc.date.issued | 2014 | |
| dc.description | PubMed: 24836238 | en_US |
| dc.description.abstract | A search for flavor-changing neutral currents in top-quark decays t -> Zq is performed in events produced from the decay chain (tt) over bar -> Zq + Wb, where both vector bosons decay leptonically, producing a final state with three leptons (electrons or muons). A data set collected with the CMS detector at the LHC is used, corresponding to an integrated luminosity of 19.7 fb(-1) of proton-proton collisions at a center-of-mass energy of 8 TeV. No excess is seen in the observed number of events relative to the standard model prediction; thus, no evidence for flavor-changing neutral currents in top-quark decays is found. A combination with a previous search at 7 TeV excludes a t. Zq branching fraction greater than 0.05% at the 95% confidence level. | en_US |
| dc.description.sponsorship | BMWF; FWF (Austria)Austrian Science Fund (FWF); FNRSFonds de la Recherche Scientifique - FNRS; FWO (Belgium)FWO; CNPqNational Council for Scientific and Technological Development (CNPq); CAPESCAPES; FAPERJCarlos Chagas Filho Foundation for Research Support of the State of Rio de Janeiro (FAPERJ); FAPESPFundacao de Amparo a Pesquisa do Estado de Sao Paulo (FAPESP); Science and Technology Facilities CouncilScience & Technology Facilities Council (STFC) [ST/I005912/1 GRIDPP, ST/F007094/1, ST/K003844/1, PP/E002803/1, ST/G502347/1, ST/H000925/2, ST/I505572/1, ST/H000925/1, ST/I002200/1, ST/K003542/1 GRID PP, ST/L00609X/1 GRIDPP, ST/F006748/1, ST/I005912/1, ST/I003622/1 GRIDPP, ST/K001256/1, ST/K003844/1 GRIDPP, ST/K001639/1, ST/I000305/1, ST/L005603/1, ST/J005665/1, ST/J004871/1, ST/K001604/1, ST/J004901/1, ST/K003542/1, ST/I000410/1, ST/J005479/1, ST/M002020/1, ST/K001531/1, ST/L00609X/1, CMS, ST/I003622/1] Funding Source: researchfish; Direct For Mathematical & Physical ScienNational Science Foundation (NSF)NSF - Directorate for Mathematical & Physical Sciences (MPS) [1306951, 1314131, 1211067, 0906479, 1205960, 1120138] Funding Source: National Science Foundation; Division Of PhysicsNational Science Foundation (NSF)NSF - Directorate for Mathematical & Physical Sciences (MPS) [1151640, 1120138, 1205960, 1211067, 1314131] Funding Source: National Science Foundation | en_US |
| dc.description.sponsorship | We congratulate our colleagues in the CERN accelerator departments for the excellent performance of the LHC and thank the technical and administrative staffs at CERN and at other CMS institutes for their contributions to the success of the CMS effort. In addition, we gratefully acknowledge the computing centers and personnel of the Worldwide LHC Computing Grid for delivering so effectively the computing infrastructure essential to our analyses. Finally, we acknowledge the enduring support for the construction and operation of the LHC and the CMS detector provided by the following funding agencies: BMWF and FWF (Austria); FNRS and FWO (Belgium); CNPq, CAPES, FAPERJ, and FAPESP (Brazil); MES (Bulgaria); CERN; CAS, MoST, and NSFC (China); COLCIENCIAS (Colombia); MSES and CSF (Croatia); RPF (Cyprus); MoER, SF0690030s09 and ERDF (Estonia); Academy of Finland, MEC, and HIP (Finland); CEA and CNRS/ IN2P3 (France); BMBF, DFG, and HGF (Germany); GSRT (Greece); OTKA and NIH (Hungary); DAEandDST(India); IPM(Iran); SFI (Ireland); INFN(Italy); NRF and WCU (Republic of Korea); LAS (Lithuania); CINVESTAV, CONACYT, SEP, and UASLP- FAI (Mexico); MBIE (New Zealand); PAEC (Pakistan); MSHE and NSC (Poland); FCT (Portugal); JINR (Dubna); MON, RosAtom, RASandRFBR(Russia); MESTD(Serbia); SEIDI and CPAN (Spain); Swiss Funding Agencies (Switzerland); NSC (Taipei); ThEPCenter, IPST, STAR and NSTDA (Thailand); TUBITAK and TAEK (Turkey); NASU (Ukraine); STFC (United Kingdom); DOE and NSF (USA). | en_US |
| dc.identifier.doi | 10.1103/PhysRevLett.112.171802 | |
| dc.identifier.issn | 0031-9007 | |
| dc.identifier.issn | 1079-7114 | |
| dc.identifier.uri | https://doi.org/10.1103/PhysRevLett.112.171802 | |
| dc.identifier.uri | https://hdl.handle.net/11147/10625 | |
| dc.language.iso | en | en_US |
| dc.publisher | American Physical Society | en_US |
| dc.relation.ispartof | Physical Review Letters | en_US |
| dc.rights | info:eu-repo/semantics/openAccess | en_US |
| dc.title | Search for Flavor-Changing Neutral Currents in Top-Quark Decays T -> Zq in Pp Collisions at Root S=8 Tev | en_US |
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| gdc.description.department | İzmir Institute of Technology. Rectorate | en_US |
| gdc.description.issue | 17 | en_US |
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| gdc.oaire.keywords | FCNC | |
| gdc.oaire.keywords | pair production [top] | |
| gdc.oaire.keywords | pp | |
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