Search for Flavor-Changing Neutral Currents in Top-Quark Decays t - GT Zq in pp Collisions at root s=8 TeV
2014
Аутори
Chatrchyan, S.Adžić, Petar
Đorđević, Miloš
Ekmedžić, Marko
Milošević, Jovan
Milenović, Predrag
Reković, Vladimir
CMS Collaboration (ukupan broj autora: 2201)
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A search for flavor-changing neutral currents in top-quark decays t - GT Zq is performed in events produced from the decay chain (tt) over bar - GT 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.
Извор:
Physical Review Letters, 2014, 112, 17Финансирање / пројекти:
- BMWF, FWF (Austria), FNRS, FWO (Belgium), CNPq, CAPES, FAPERJ, FAPESP
DOI: 10.1103/PhysRevLett.112.171802
ISSN: 0031-9007; 1079-7114
PubMed: 24836238
WoS: 000336099500003
Scopus: 2-s2.0-84899876401
Колекције
Институција/група
VinčaTY - JOUR AU - Chatrchyan, S. AU - Adžić, Petar AU - Đorđević, Miloš AU - Ekmedžić, Marko AU - Milošević, Jovan AU - Milenović, Predrag AU - Reković, Vladimir PY - 2014 UR - https://vinar.vin.bg.ac.rs/handle/123456789/6003 AB - A search for flavor-changing neutral currents in top-quark decays t - GT Zq is performed in events produced from the decay chain (tt) over bar - GT 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. T2 - Physical Review Letters T1 - Search for Flavor-Changing Neutral Currents in Top-Quark Decays t - GT Zq in pp Collisions at root s=8 TeV VL - 112 IS - 17 DO - 10.1103/PhysRevLett.112.171802 ER -
@article{ author = "Chatrchyan, S. and Adžić, Petar and Đorđević, Miloš and Ekmedžić, Marko and Milošević, Jovan and Milenović, Predrag and Reković, Vladimir", year = "2014", abstract = "A search for flavor-changing neutral currents in top-quark decays t - GT Zq is performed in events produced from the decay chain (tt) over bar - GT 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.", journal = "Physical Review Letters", title = "Search for Flavor-Changing Neutral Currents in Top-Quark Decays t - GT Zq in pp Collisions at root s=8 TeV", volume = "112", number = "17", doi = "10.1103/PhysRevLett.112.171802" }
Chatrchyan, S., Adžić, P., Đorđević, M., Ekmedžić, M., Milošević, J., Milenović, P.,& Reković, V.. (2014). Search for Flavor-Changing Neutral Currents in Top-Quark Decays t - GT Zq in pp Collisions at root s=8 TeV. in Physical Review Letters, 112(17). https://doi.org/10.1103/PhysRevLett.112.171802
Chatrchyan S, Adžić P, Đorđević M, Ekmedžić M, Milošević J, Milenović P, Reković V. Search for Flavor-Changing Neutral Currents in Top-Quark Decays t - GT Zq in pp Collisions at root s=8 TeV. in Physical Review Letters. 2014;112(17). doi:10.1103/PhysRevLett.112.171802 .
Chatrchyan, S., Adžić, Petar, Đorđević, Miloš, Ekmedžić, Marko, Milošević, Jovan, Milenović, Predrag, Reković, Vladimir, "Search for Flavor-Changing Neutral Currents in Top-Quark Decays t - GT Zq in pp Collisions at root s=8 TeV" in Physical Review Letters, 112, no. 17 (2014), https://doi.org/10.1103/PhysRevLett.112.171802 . .