J/psi and psi(2S) production 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%3A10125341" target="_blank" >RIV/00216208:11320/12:10125341 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1007/JHEP02(2012)011" target="_blank" >http://dx.doi.org/10.1007/JHEP02(2012)011</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/JHEP02(2012)011" target="_blank" >10.1007/JHEP02(2012)011</a>

Jazyk výsledku

angličtina

Název v původním jazyce

J/psi and psi(2S) production in pp collisions at root s=7 TeV

Popis výsledku v původním jazyce

A measurement of the J/psi and psi(2S) production cross sections in pp collisions at root s = 7 TeV with the CMS experiment at the LHC is presented. The data sample corresponds to an integrated luminosity of 37 pb(-1). Using a fit to the invariant mass and decay length distributions, production cross sections have been measured separately for prompt and non-prompt charmonium states, as a function of the meson transverse momentum in several rapidity ranges and integrated in the kinematical regions considered in this study. In addition, cross sections restricted to the acceptance of the CMS detector are given, which are not affected by the polarization of the charmonium states. The ratio of the differential production cross sections of the two states, where systematic uncertainties largely cancel, is also determined. The branching fraction of the inclusive B -> psi(2S)X decay is extracted from the ratio of the non-prompt cross sections to be: beta(B -> psi(2S)X) = (3.08 +/- 0.12 (stat.+

Název v anglickém jazyce

J/psi and psi(2S) production in pp collisions at root s=7 TeV

Popis výsledku anglicky

A measurement of the J/psi and psi(2S) production cross sections in pp collisions at root s = 7 TeV with the CMS experiment at the LHC is presented. The data sample corresponds to an integrated luminosity of 37 pb(-1). Using a fit to the invariant mass and decay length distributions, production cross sections have been measured separately for prompt and non-prompt charmonium states, as a function of the meson transverse momentum in several rapidity ranges and integrated in the kinematical regions considered in this study. In addition, cross sections restricted to the acceptance of the CMS detector are given, which are not affected by the polarization of the charmonium states. The ratio of the differential production cross sections of the two states, where systematic uncertainties largely cancel, is also determined. The branching fraction of the inclusive B -> psi(2S)X decay is extracted from the ratio of the non-prompt cross sections to be: beta(B -> psi(2S)X) = (3.08 +/- 0.12 (stat.+

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

2

Číslo periodika v rámci svazku

2

Stát vydavatele periodika

IT - Italská republika

Počet stran výsledku

46

Strana od-do

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Kód UT WoS článku

000301451200011

EID výsledku v databázi Scopus

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