Measurements of psi(2S) and X(3872) -> J/psi pi ( ) pi (-) production 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%3A73581450" target="_blank" >RIV/61989592:15310/17:73581450 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/68407700:21220/17:00316971 RIV/68407700:21340/17:00316971 RIV/68407700:21670/17:00316971 RIV/00216208:11320/17:10369119

Výsledek na webu

<a href="https://link.springer.com/content/pdf/10.1007%2FJHEP01%282017%29117.pdf" target="_blank" >https://link.springer.com/content/pdf/10.1007%2FJHEP01%282017%29117.pdf</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/JHEP01(2017)117" target="_blank" >10.1007/JHEP01(2017)117</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Measurements of psi(2S) and X(3872) -> J/psi pi ( ) pi (-) production in pp collisions at root s=8 Tev with the ATLAS detector

Popis výsledku v původním jazyce

Differential cross sections are presented for the prompt and non-prompt production of the hidden-charm states X(3872) and psi(2S), in the decay mode J/psi pi (+) pi (-), measured using 11.4 fb(-1) of pp collisions at root s = 8 Tev by the ATLAS detector at the LHC. The ratio of cross-sections X(3872)/psi(2S) is also given, separately for prompt and non-prompt components, as well as the non-prompt fractions of X(3872) and psi(2S). Assuming independent single effective lifetimes for non-prompt X(3872) and psi(2S) production gives separating short- and long-lived contributions, assuming that the short-lived component is due to B (c) decays, gives R (B) = (3.57 +/- 0.33(stat) +/- 0.11(sys)) x 10(-2), with the fraction of non-prompt X(3872) produced via B (c) decays for p (T)(X(3872)) &gt; 10 GeV being (25 +/- 13(stat) +/- 2(sys) +/- 5(spin))%. The distributions of the dipion invariant mass in the X(3872) and psi(2S) decays are also measured and compared to theoretical predictions.

Název v anglickém jazyce

Measurements of psi(2S) and X(3872) -> J/psi pi ( ) pi (-) production in pp collisions at root s=8 Tev with the ATLAS detector

Popis výsledku anglicky

Differential cross sections are presented for the prompt and non-prompt production of the hidden-charm states X(3872) and psi(2S), in the decay mode J/psi pi (+) pi (-), measured using 11.4 fb(-1) of pp collisions at root s = 8 Tev by the ATLAS detector at the LHC. The ratio of cross-sections X(3872)/psi(2S) is also given, separately for prompt and non-prompt components, as well as the non-prompt fractions of X(3872) and psi(2S). Assuming independent single effective lifetimes for non-prompt X(3872) and psi(2S) production gives separating short- and long-lived contributions, assuming that the short-lived component is due to B (c) decays, gives R (B) = (3.57 +/- 0.33(stat) +/- 0.11(sys)) x 10(-2), with the fraction of non-prompt X(3872) produced via B (c) decays for p (T)(X(3872)) &gt; 10 GeV being (25 +/- 13(stat) +/- 2(sys) +/- 5(spin))%. The distributions of the dipion invariant mass in the X(3872) and psi(2S) decays are also measured and compared to theoretical predictions.

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

Journal of High Energy Physics (online)

ISSN

1029-8479

e-ISSN

—

Svazek periodika

2017

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

DE - Spolková republika Německo

Počet stran výsledku

43

Strana od-do

"117-1"-"117-43"

Kód UT WoS článku

000394175000001

EID výsledku v databázi Scopus

2-s2.0-85011340463