Measurement of the forward-backward asymmetry in the distribution of leptons in tt events in the lepton+jets channel

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F14%3A00435513" target="_blank" >RIV/68378271:_____/14:00435513 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1103/PhysRevD.90.072001" target="_blank" >http://dx.doi.org/10.1103/PhysRevD.90.072001</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1103/PhysRevD.90.072001" target="_blank" >10.1103/PhysRevD.90.072001</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Measurement of the forward-backward asymmetry in the distribution of leptons in tt events in the lepton+jets channel

Popis výsledku v původním jazyce

We present measurements of the forward-backward asymmetry in the angular distribution of leptons from decays of top quarks and antiquarks produced in proton-antiproton collisions. We consider the final state containing a lepton and at least three jets. The entire sample of data collected by the D0 experiment during Run II of the Fermilab Tevatron Collider, corresponding to 9.7 inverse fb of integrated luminosity, is used. The asymmetry measured for reconstructed leptons is AlFB=(2.92.1(stat.)+1.51.7(syst.))%. When corrected for efficiency and resolution effects within the lepton rapidity coverage of |yl|<1.5, the asymmetry is found to be AlFB=(4.22.3(stat.)+1.72.0(syst.))%. Combination with the asymmetry measured in the dilepton final state yields AlFB=(4.22.0(stat.)1.4(syst.))%. We examine the dependence of AlFB on the transverse momentum and rapidity of the lepton.

Název v anglickém jazyce

Measurement of the forward-backward asymmetry in the distribution of leptons in tt events in the lepton+jets channel

Popis výsledku anglicky

We present measurements of the forward-backward asymmetry in the angular distribution of leptons from decays of top quarks and antiquarks produced in proton-antiproton collisions. We consider the final state containing a lepton and at least three jets. The entire sample of data collected by the D0 experiment during Run II of the Fermilab Tevatron Collider, corresponding to 9.7 inverse fb of integrated luminosity, is used. The asymmetry measured for reconstructed leptons is AlFB=(2.92.1(stat.)+1.51.7(syst.))%. When corrected for efficiency and resolution effects within the lepton rapidity coverage of |yl|<1.5, the asymmetry is found to be AlFB=(4.22.3(stat.)+1.72.0(syst.))%. Combination with the asymmetry measured in the dilepton final state yields AlFB=(4.22.0(stat.)1.4(syst.))%. We examine the dependence of AlFB on the transverse momentum and rapidity of the lepton.

Druh

J_x - 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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Projekt

<a href="/cs/project/LG12006" target="_blank" >LG12006: Spolupráce na experimentech NOvA a D0 ve Fermiho národní laboratoři, USA</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2014

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Physical Review D: Particles, Fields, Gravitation and Cosmology

ISSN

1550-7998

e-ISSN

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Svazek periodika

90

Číslo periodika v rámci svazku

7

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

17

Strana od-do

"072001-1"-"072001-17"

Kód UT WoS článku

000342795700001

EID výsledku v databázi Scopus

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