Measurement of the gamma(1S) production cross-section in pp collisions at root s=7 TeV in ATLAS ATLAS Collaboration

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15310%2F11%3A33119143" target="_blank" >RIV/61989592:15310/11:33119143 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1016/j.physletb.2011.09.092" target="_blank" >http://dx.doi.org/10.1016/j.physletb.2011.09.092</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.physletb.2011.09.092" target="_blank" >10.1016/j.physletb.2011.09.092</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Measurement of the gamma(1S) production cross-section in pp collisions at root s=7 TeV in ATLAS ATLAS Collaboration

Popis výsledku v původním jazyce

A measurement of the cross-section for gamma(1S) -} mu(+)mu(-) production in proton-proton collisions at centre of mass energy of 7 TeV is presented. The cross-section is measured as a function of the gamma(1S) transverse momentum in two bins of rapidity, vertical bar y(gamma(1S))vertical bar { 1.2 and 1.2 { vertical bar y(gamma(1S))vertical bar { 2.4. The measurement requires that both muons have transverse momentum p(T)(mu) } 4 GeV and pseuclorapidity vertical bar eta(mu)vertical bar { 2.5 in order toreduce theoretical uncertainties on the acceptance, which depend on the poorly known polarisation. The results are based on an integrated luminosity of 1.13 pb(-1), collected with the ATLAS detector at the Large Hadron Collider. The cross-section measurement is compared to theoretical predictions: it agrees to within a factor of two with a prediction based on the NRQCD model including colour-singlet and colour-octet matrix elements as implemented in PYTHIA while it disagrees by up to a

Název v anglickém jazyce

Measurement of the gamma(1S) production cross-section in pp collisions at root s=7 TeV in ATLAS ATLAS Collaboration

Popis výsledku anglicky

A measurement of the cross-section for gamma(1S) -} mu(+)mu(-) production in proton-proton collisions at centre of mass energy of 7 TeV is presented. The cross-section is measured as a function of the gamma(1S) transverse momentum in two bins of rapidity, vertical bar y(gamma(1S))vertical bar { 1.2 and 1.2 { vertical bar y(gamma(1S))vertical bar { 2.4. The measurement requires that both muons have transverse momentum p(T)(mu) } 4 GeV and pseuclorapidity vertical bar eta(mu)vertical bar { 2.5 in order toreduce theoretical uncertainties on the acceptance, which depend on the poorly known polarisation. The results are based on an integrated luminosity of 1.13 pb(-1), collected with the ATLAS detector at the Large Hadron Collider. The cross-section measurement is compared to theoretical predictions: it agrees to within a factor of two with a prediction based on the NRQCD model including colour-singlet and colour-octet matrix elements as implemented in PYTHIA while it disagrees by up to a

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

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

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

Rok uplatnění

2011

Kód důvěrnosti údajů

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

Název periodika

Physics Letters. Section B: Nuclear, Elementary Particle and High-Energy Physics

ISSN

0370-2693

e-ISSN

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Svazek periodika

705

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

19

Strana od-do

9-27

Kód UT WoS článku

000296937000003

EID výsledku v databázi Scopus

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