Measurement of the prompt J/psi pair production cross-section in pp collisions at root s=8 TeV with the ATLAS detector

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15310%2F17%3A73581515" target="_blank" >RIV/61989592:15310/17:73581515 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/68407700:21220/17:00316974 RIV/68407700:21340/17:00316974 RIV/68407700:21670/17:00316974 RIV/00216208:11320/17:10368912

Výsledek na webu

<a href="https://link.springer.com/content/pdf/10.1140%2Fepjc%2Fs10052-017-4644-9.pdf" target="_blank" >https://link.springer.com/content/pdf/10.1140%2Fepjc%2Fs10052-017-4644-9.pdf</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1140/epjc/s10052-017-4644-9" target="_blank" >10.1140/epjc/s10052-017-4644-9</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Measurement of the prompt J/psi pair production cross-section in pp collisions at root s=8 TeV with the ATLAS detector

Popis výsledku v původním jazyce

The production of two prompt J/psi mesons, each with transverse momenta p(T) &gt; 8.5 GeV and rapidity vertical bar y vertical bar &lt; 2.1, is studied using a sample of proton-proton collisions at root s = 8 TeV, corresponding to an integrated luminosity of 11.4 fb(-1) collected in 2012 with the ATLAS detector at the LHC. The differential cross-section, assuming unpolarised J/psi production, is measured as a function of the transverse momentum of the lower-p(T) J/psi meson, di-J/psi p(T) and mass, the difference in rapidity between the two J/psi mesons, and the azimuthal angle between the two J/psi mesons. The fraction of prompt pair events due to double parton scattering is determined by studying kinematic correlations between the two J/psi mesons. The total and double parton scattering cross-sections are compared with predictions. The effective cross-section of double parton scattering is measured to be sigma(eff) = 6.3 +/- 1.6(stat) +/- 1.0(syst) mb.

Název v anglickém jazyce

Measurement of the prompt J/psi pair production cross-section in pp collisions at root s=8 TeV with the ATLAS detector

Popis výsledku anglicky

The production of two prompt J/psi mesons, each with transverse momenta p(T) &gt; 8.5 GeV and rapidity vertical bar y vertical bar &lt; 2.1, is studied using a sample of proton-proton collisions at root s = 8 TeV, corresponding to an integrated luminosity of 11.4 fb(-1) collected in 2012 with the ATLAS detector at the LHC. The differential cross-section, assuming unpolarised J/psi production, is measured as a function of the transverse momentum of the lower-p(T) J/psi meson, di-J/psi p(T) and mass, the difference in rapidity between the two J/psi mesons, and the azimuthal angle between the two J/psi mesons. The fraction of prompt pair events due to double parton scattering is determined by studying kinematic correlations between the two J/psi mesons. The total and double parton scattering cross-sections are compared with predictions. The effective cross-section of double parton scattering is measured to be sigma(eff) = 6.3 +/- 1.6(stat) +/- 1.0(syst) mb.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10303 - Particles and field physics

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

2017

Kód důvěrnosti údajů

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

Název periodika

European Physical Journal C

ISSN

1434-6044

e-ISSN

—

Svazek periodika

77

Číslo periodika v rámci svazku

2

Stát vydavatele periodika

DE - Spolková republika Německo

Počet stran výsledku

34

Strana od-do

"76-1"-"76-34"

Kód UT WoS článku

000400004500001

EID výsledku v databázi Scopus

2-s2.0-85011954449