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

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F11%3A10104364" target="_blank" >RIV/00216208:11320/11:10104364 - isvavai.cz</a>

Výsledek na webu

<a href="http://www.sciencedirect.com/science/article/pii/S0370269311011920" target="_blank" >http://www.sciencedirect.com/science/article/pii/S0370269311011920</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 Y(1S) production cross-section in pp collisions at root s=7 TeV in ATLAS

Popis výsledku v původním jazyce

A measurement of the cross-section for Y(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 Y(1S) transverse momentum in two bins of rapidity. The measurement requires that both muons have transverse momentum p_T(mu) great then 4 GeV and pseudorapidity less then 2.5 to reduce 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 at CERN. The cross-section measurement is compared to theoretical predictions: it agrees to within a factor of two with a prediction based on the NRQCD modelincluding colour-singlet and colour-octet matrix elements as implemented in PYTHIA while it disagrees by up to a factor of ten with the next-to-leading order prediction based on the colour-singlet model.

Název v anglickém jazyce

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

Popis výsledku anglicky

A measurement of the cross-section for Y(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 Y(1S) transverse momentum in two bins of rapidity. The measurement requires that both muons have transverse momentum p_T(mu) great then 4 GeV and pseudorapidity less then 2.5 to reduce 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 at CERN. The cross-section measurement is compared to theoretical predictions: it agrees to within a factor of two with a prediction based on the NRQCD modelincluding colour-singlet and colour-octet matrix elements as implemented in PYTHIA while it disagrees by up to a factor of ten with the next-to-leading order prediction based on the colour-singlet model.

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)<br>Z - Vyzkumny zamer (s odkazem do CEZ)

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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