Measurement of the cross-section for b- jets produced in association with a Z boson at sqrt{s} = 7 TeV with the ATLAS detector

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F12%3A00389608" target="_blank" >RIV/68378271:_____/12:00389608 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1016/j.physletb.2011.11.059" target="_blank" >http://dx.doi.org/10.1016/j.physletb.2011.11.059</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.physletb.2011.11.059" target="_blank" >10.1016/j.physletb.2011.11.059</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Measurement of the cross-section for b- jets produced in association with a Z boson at sqrt{s} = 7 TeV with the ATLAS detector

Popis výsledku v původním jazyce

A measurement is presented of the cross-section for b-jet production in association with a Z boson in pp collisions at a centre-of-mass energy of sqrt(s)=7 TeV. The analysis uses the data sample collected by the ATLAS experiment in 2010, corresponding toan integrated luminosity of approximately 36 pb^-1. The event selection requires a Z boson decaying into high pt electrons or muons, and a b-jet, identified by its displaced vertex, with transverse momentum pt>25 GeV and rapidity |y|<2.1. After subtraction of backgrounds, the yield is extracted from the vertex mass distribution of the candidate b-jets. The ratio of this cross-section to the inclusive Z cross-section (the average number of b-jets per Z event) is also measured. Both results are found tobe in good agreement with perturbative QCD predictions at next-to-leading order.

Název v anglickém jazyce

Measurement of the cross-section for b- jets produced in association with a Z boson at sqrt{s} = 7 TeV with the ATLAS detector

Popis výsledku anglicky

A measurement is presented of the cross-section for b-jet production in association with a Z boson in pp collisions at a centre-of-mass energy of sqrt(s)=7 TeV. The analysis uses the data sample collected by the ATLAS experiment in 2010, corresponding toan integrated luminosity of approximately 36 pb^-1. The event selection requires a Z boson decaying into high pt electrons or muons, and a b-jet, identified by its displaced vertex, with transverse momentum pt>25 GeV and rapidity |y|<2.1. After subtraction of backgrounds, the yield is extracted from the vertex mass distribution of the candidate b-jets. The ratio of this cross-section to the inclusive Z cross-section (the average number of b-jets per Z event) is also measured. Both results are found tobe in good agreement with perturbative QCD predictions at next-to-leading order.

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/LA08032" target="_blank" >LA08032: Mezinárodní experiment ATLAS-CERN</a><br>

Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2012

Kód důvěrnosti údajů

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

Název periodika

Physics Letters. B

ISSN

0370-2693

e-ISSN

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Svazek periodika

706

Číslo periodika v rámci svazku

4-5

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

19

Strana od-do

295-313

Kód UT WoS článku

000299756800008

EID výsledku v databázi Scopus

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