Double J/psi production in pion-nucleon scattering at COMPASS

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F23%3A10469012" target="_blank" >RIV/00216208:11320/23:10469012 - isvavai.cz</a>

Výsledek na webu

<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=5bv1~rEEzl" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=5bv1~rEEzl</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.physletb.2023.137702" target="_blank" >10.1016/j.physletb.2023.137702</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Double J/psi production in pion-nucleon scattering at COMPASS

Popis výsledku v původním jazyce

We present the study of the production of double J/ psi mesons using COMPASS data collected with a 190 GeV/c pi- beam scattering off NH3, Al and W targets. Kinematic distributions of the collected double J/ psi events are analysed, and the double J/ psi production cross section is estimated for each of the COMPASS targets. The NH3 results are compared to predictions from single-and double-parton scattering models as well as the pion intrinsic charm and the tetraquark exotic resonance hypotheses. It is demonstrated that the single parton scattering production mechanism gives the dominant contribution that is sufficient to describe the data. An upper limit on the double intrinsic charm content of the pion is evaluated. No significant signatures that could be associated with exotic tetraquarks are found in the double J/ psi mass spectrum. (c) 2023 Published by Elsevier B.V. This is an open access article under the CC BY license (http:// creativecommons .org /licenses /by /4 .0/). Funded by SCOAP3.

Název v anglickém jazyce

Double J/psi production in pion-nucleon scattering at COMPASS

Popis výsledku anglicky

We present the study of the production of double J/ psi mesons using COMPASS data collected with a 190 GeV/c pi- beam scattering off NH3, Al and W targets. Kinematic distributions of the collected double J/ psi events are analysed, and the double J/ psi production cross section is estimated for each of the COMPASS targets. The NH3 results are compared to predictions from single-and double-parton scattering models as well as the pion intrinsic charm and the tetraquark exotic resonance hypotheses. It is demonstrated that the single parton scattering production mechanism gives the dominant contribution that is sufficient to describe the data. An upper limit on the double intrinsic charm content of the pion is evaluated. No significant signatures that could be associated with exotic tetraquarks are found in the double J/ psi mass spectrum. (c) 2023 Published by Elsevier B.V. This is an open access article under the CC BY license (http:// creativecommons .org /licenses /by /4 .0/). Funded by SCOAP3.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10300 - Physical sciences

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>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2023

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

1873-2445

Svazek periodika

838

Číslo periodika v rámci svazku

neuveden

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

8

Strana od-do

137702

Kód UT WoS článku

000989354500001

EID výsledku v databázi Scopus

2-s2.0-85147702312