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Statements

Subject Item
n2:RIV%2F68378271%3A_____%2F10%3A00352065%21RIV11-MSM-68378271
rdf:type
skos:Concept n18:Vysledek
dcterms: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)<2.0*10-4 and B(t->gc)<3.9*10-3. 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)<2.0*10-4 and B(t->gc)<3.9*10-3.
dcterms: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
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
skos:notation
RIV/68378271:_____/10:00352065!RIV11-MSM-68378271
n3:aktivita
n13:P n13:Z
n3:aktivity
P(LA08047), P(LC527), Z(AV0Z10100502), Z(MSM0021620859), Z(MSM6840770039)
n3:cisloPeriodika
2
n3:dodaniDat
n15:2011
n3:domaciTvurceVysledku
n9:2016184 n9:4254627
n3:druhVysledku
n14:J
n3:duvernostUdaju
n16:S
n3:entitaPredkladatele
n12:predkladatel
n3:idSjednocenehoVysledku
286550
n3:idVysledku
RIV/68378271:_____/10:00352065
n3:jazykVysledku
n8:eng
n3:klicovaSlova
top quark; single top; FCNC; flavor-changing neutral current; quark–gluon coupling; tevatron; proton–antiproton collider
n3:klicoveSlovo
n6:FCNC n6:top%20quark n6:tevatron n6:quark%E2%80%93gluon%20coupling n6:single%20top n6:proton%E2%80%93antiproton%20collider n6:flavor-changing%20neutral%20current
n3:kodStatuVydavatele
NL - Nizozemsko
n3:kontrolniKodProRIV
[52F56385FF51]
n3:nazevZdroje
Physics Letters. B
n3:obor
n17:BF
n3:pocetDomacichTvurcuVysledku
2
n3:pocetTvurcuVysledku
5
n3:projekt
n10:LC527 n10:LA08047
n3:rokUplatneniVysledku
n15:2010
n3:svazekPeriodika
693
n3:tvurceVysledku
Abolins, M. Kupčo, Alexander Lokajíček, Miloš Abazov, V. M. Abbott, B.
n3:wos
000283020100003
n3:zamer
n7:MSM6840770039 n7:MSM0021620859 n7:AV0Z10100502
s:issn
0370-2693
s:numberOfPages
7