Measurement of the Z/gamma* plus b-jet cross section in pp collisions at root s=7 TeV

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F12%3A10125362" target="_blank" >RIV/00216208:11320/12:10125362 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1007/JHEP06(2012)126" target="_blank" >http://dx.doi.org/10.1007/JHEP06(2012)126</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/JHEP06(2012)126" target="_blank" >10.1007/JHEP06(2012)126</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Measurement of the Z/gamma* plus b-jet cross section in pp collisions at root s=7 TeV

Popis výsledku v původním jazyce

The production of b jets in association with a Z/gamma* boson is studied using proton-proton collisions delivered by the LHC at a centre-of-mass energy of 7TeV and recorded by the CMS detector. The inclusive cross section for Z/gamma* + b-jet productionis measured in a sample corresponding to an integrated luminosity of 2.2 fb(-1). The Z/gamma* + b-jet cross section with Z/gamma* -> ll (where ll = ee or mu mu) for events with the invariant mass 60 < M-ll < 120 GeV, at least one b jet at the hadron level with p(T) > 25 GeV and vertical bar eta vertical bar < 2.1, and a separation between the leptons and the jets of Delta R > 0.5 is found to be 5.84 +/- 0.08 (stat.) +/- 0.72 (syst.)(-0.55)(+0.25) (theory) pb. The kinematic properties of the events are also studied and found to be in agreement with the predictions made by the MADGRAPH event generator with the parton shower and the hadronisation performed by PYTHIA.

Název v anglickém jazyce

Measurement of the Z/gamma* plus b-jet cross section in pp collisions at root s=7 TeV

Popis výsledku anglicky

The production of b jets in association with a Z/gamma* boson is studied using proton-proton collisions delivered by the LHC at a centre-of-mass energy of 7TeV and recorded by the CMS detector. The inclusive cross section for Z/gamma* + b-jet productionis measured in a sample corresponding to an integrated luminosity of 2.2 fb(-1). The Z/gamma* + b-jet cross section with Z/gamma* -> ll (where ll = ee or mu mu) for events with the invariant mass 60 < M-ll < 120 GeV, at least one b jet at the hadron level with p(T) > 25 GeV and vertical bar eta vertical bar < 2.1, and a separation between the leptons and the jets of Delta R > 0.5 is found to be 5.84 +/- 0.08 (stat.) +/- 0.72 (syst.)(-0.55)(+0.25) (theory) pb. The kinematic properties of the events are also studied and found to be in agreement with the predictions made by the MADGRAPH event generator with the parton shower and the hadronisation performed by PYTHIA.

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/LA08015" target="_blank" >LA08015: Spolupráce ČR s CERN</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2012

Kód důvěrnosti údajů

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

Název periodika

Journal of High Energy Physics

ISSN

1126-6708

e-ISSN

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Svazek periodika

6

Číslo periodika v rámci svazku

6

Stát vydavatele periodika

IT - Italská republika

Počet stran výsledku

29

Strana od-do

1-29

Kód UT WoS článku

000306418300035

EID výsledku v databázi Scopus

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