About: Search for flavor changing neutral currents via quark-gluon couplings in single top quark production using 2.3 fb-1 of ppbar collisions

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	We present a search for flavor changing neutral currents via quark-gluon couplings in a sample of single top quark final states corresponding to 2.3 fb-1 of integrated luminosity collected with the D0 detector at the Fermilab Tevatron Collider. We select events containing a single top quark candidates with an additional jet, and obtain separation between signal and background using Bayesian neural networks. We find consistency between background expectation and observed data, and set limits on flavor changing neutral current gluon couplings of the top quark to up quarks (tgu) and charm quarks (tgc). The cross section limits at the 95% C.L. are sigma_tgu<0.20pb and sigma_tgc<0.27pb. These correspond to limits on the top quark decay branching fractions of B(t->gu)<2.010-4 and B(t->gc)<3.910-3. We present a search for flavor changing neutral currents via quark-gluon couplings in a sample of single top quark final states corresponding to 2.3 fb-1 of integrated luminosity collected with the D0 detector at the Fermilab Tevatron Collider. We select events containing a single top quark candidates with an additional jet, and obtain separation between signal and background using Bayesian neural networks. We find consistency between background expectation and observed data, and set limits on flavor changing neutral current gluon couplings of the top quark to up quarks (tgu) and charm quarks (tgc). The cross section limits at the 95% C.L. are sigma_tgu<0.20pb and sigma_tgc<0.27pb. These correspond to limits on the top quark decay branching fractions of B(t->gu)<2.010-4 and B(t->gc)<3.910-3. (en)
Title	Search for flavor changing neutral currents via quark-gluon couplings in single top quark production using 2.3 fb-1 of ppbar collisions Search for flavor changing neutral currents via quark-gluon couplings in single top quark production using 2.3 fb-1 of ppbar collisions (en)
skos:prefLabel	Search for flavor changing neutral currents via quark-gluon couplings in single top quark production using 2.3 fb-1 of ppbar collisions Search for flavor changing neutral currents via quark-gluon couplings in single top quark production using 2.3 fb-1 of ppbar collisions (en)
skos:notation	RIV/68378271:_____/10:00352065!RIV11-MSM-68378271
http://linked.open...avai/riv/aktivita	P Z
http://linked.open...avai/riv/aktivity	P(LA08047), P(LC527), Z(AV0Z10100502), Z(MSM0021620859), Z(MSM6840770039)
http://linked.open...iv/cisloPeriodika	2
http://linked.open...vai/riv/dodaniDat	2011
http://linked.open...aciTvurceVysledku	Kupčo, Alexander Lokajíček, Miloš
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Fyzikální ústav AV ČR, v. v. i.
http://linked.open...dnocenehoVysledku	286550
http://linked.open...ai/riv/idVysledku	RIV/68378271:_____/10:00352065
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	top quark; single top; FCNC; flavor-changing neutral current; quark–gluon coupling; tevatron; proton–antiproton collider (en)
http://linked.open.../riv/klicoveSlovo	tevatron top quark FCNC flavor-changing neutral current proton–antiproton collider quark–gluon coupling single top
http://linked.open...odStatuVydavatele	NL - Nizozemsko
http://linked.open...ontrolniKodProRIV	[52F56385FF51]
http://linked.open...i/riv/nazevZdroje	Physics Letters. B
http://linked.open...in/vavai/riv/obor	BF
http://linked.open...ichTvurcuVysledku	2 (xsd:int)
http://linked.open...cetTvurcuVysledku	5 (xsd:int)
http://linked.open...vavai/riv/projekt	Collaboration on the D0 Experiment at FNAL, U.S.A. Center for Particle Physics
http://linked.open...UplatneniVysledku	2010
http://linked.open...v/svazekPeriodika	693
http://linked.open...iv/tvurceVysledku	Abazov, V. M. Abbott, B. Kupčo, Alexander Lokajíček, Miloš Abolins, M.
http://linked.open...ain/vavai/riv/wos	000283020100003
http://linked.open...n/vavai/riv/zamer	Jevy fyziky elementárních částic přesahující standardní model Výzkum vlastností jader a subjaderných částic a jejich interakcí Matematické, počítačové a experimentální metody ve fyzice
issn	0370-2693
number of pages	7 (xsd:int)
is http://linked.open...avai/riv/vysledek of	Search for flavor changing neutral currents via quark-gluon couplings in single top quark production using 2.3 fb-1 of ppbar collisions Search for flavor changing neutral currents via quark-gluon couplings in single top quark production using 2.3 fb-1 of ppbar collisions Search for flavor changing neutral currents via quark-gluon couplings in single top quark production using 2.3 fb-1 of ppbar collisions

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