A search for flavour changing neutral currents in top-quark decays in p anti-p collision data collected with the ATLAS detector at sqrt{s}=7 TeV
Identifikátory výsledku
Kód výsledku v IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F12%3A00388405" target="_blank" >RIV/68378271:_____/12:00388405 - isvavai.cz</a>
Výsledek na webu
<a href="http://dx.doi.org/10.1007/JHEP09(2012)139" target="_blank" >http://dx.doi.org/10.1007/JHEP09(2012)139</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1007/JHEP09(2012)139" target="_blank" >10.1007/JHEP09(2012)139</a>
Alternativní jazyky
Jazyk výsledku
angličtina
Název v původním jazyce
A search for flavour changing neutral currents in top-quark decays in p anti-p collision data collected with the ATLAS detector at sqrt{s}=7 TeV
Popis výsledku v původním jazyce
A search for flavour changing neutral current (FCNC) processes in top-quark decays by the ATLAS Collaboration is presented. Data collected from pp collisions at the LHC at a centre-of-mass energy of sqrt(s) = 7 TeV during 2011, corresponding to an integrated luminosity of 2.1 fb^-1, were used. A search was performed for top-quark pair-production events, with one top quark decaying through the t->Zq FCNC (q=u,c) channel, and the other through the Standard Model dominant mode t->Wb. Only the decays of theZ boson to charged leptons and leptonic W-boson decays were considered as signal. Consequently, the final-state topology is characterised by the presence of three isolated charged leptons, at least two jets and missing transverse momentum from the undetected neutrino. No evidence for an FCNC signal was found. An upper limit on the t->Zq branching ratio of BR(t->Zq)<0.73% is set at the 95% confidence level.
Název v anglickém jazyce
A search for flavour changing neutral currents in top-quark decays in p anti-p collision data collected with the ATLAS detector at sqrt{s}=7 TeV
Popis výsledku anglicky
A search for flavour changing neutral current (FCNC) processes in top-quark decays by the ATLAS Collaboration is presented. Data collected from pp collisions at the LHC at a centre-of-mass energy of sqrt(s) = 7 TeV during 2011, corresponding to an integrated luminosity of 2.1 fb^-1, were used. A search was performed for top-quark pair-production events, with one top quark decaying through the t->Zq FCNC (q=u,c) channel, and the other through the Standard Model dominant mode t->Wb. Only the decays of theZ boson to charged leptons and leptonic W-boson decays were considered as signal. Consequently, the final-state topology is characterised by the presence of three isolated charged leptons, at least two jets and missing transverse momentum from the undetected neutrino. No evidence for an FCNC signal was found. An upper limit on the t->Zq branching ratio of BR(t->Zq)<0.73% is set at the 95% confidence level.
Klasifikace
Druh
J<sub>x</sub> - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)
CEP obor
BF - Elementární částice a fyzika vysokých energií
OECD FORD obor
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Návaznosti výsledku
Projekt
<a href="/cs/project/LA08032" target="_blank" >LA08032: Mezinárodní experiment ATLAS-CERN</a><br>
Návaznosti
Z - Vyzkumny zamer (s odkazem do CEZ)
Ostatní
Rok uplatnění
2012
Kód důvěrnosti údajů
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Údaje specifické pro druh výsledku
Název periodika
Journal of High Energy Physics
ISSN
1126-6708
e-ISSN
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Svazek periodika
2012
Číslo periodika v rámci svazku
9
Stát vydavatele periodika
US - Spojené státy americké
Počet stran výsledku
36
Strana od-do
1-36
Kód UT WoS článku
00310341200001
EID výsledku v databázi Scopus
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