Proton emission in ultraperipheral Pb-Pb collisions at root sNN=5.02 TeV

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21340%2F25%3A00386668" target="_blank" >RIV/68407700:21340/25:00386668 - isvavai.cz</a>

Result on the web

<a href="https://doi.org/10.1103/PhysRevC.111.054906" target="_blank" >https://doi.org/10.1103/PhysRevC.111.054906</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1103/PhysRevC.111.054906" target="_blank" >10.1103/PhysRevC.111.054906</a>

Result language

angličtina

Original language name

Proton emission in ultraperipheral Pb-Pb collisions at root sNN=5.02 TeV

Original language description

The first measurements of proton emission accompanied by neutron emission in the electromagnetic dissociation (EMD) of Pb-208 nuclei in the ALICE experiment at the Large Hadron Collider are presented. The EMD protons and neutrons emitted at very forward rapidities are detected by the proton and neutron zero degree calorimeters of the ALICE experiment. The emission cross sections of zero, one, two, and three protons accompanied by at least one neutron were measured in ultraperipheral Pb-208 - Pb-208 collisions at a center-of-mass energy per nucleon pair root s(NN) = 5.02 TeV. The 0p and 3p cross sections are described by the RELDIS model within their measurement uncertainties, while the 1p and 2p cross sections are underestimated by the model by 17-25%. According to this model, these 0p, 1p, 2p, and 3p cross sections are associated, respectively, with the production of various isotopes of Pb, Tl, Hg, and Au in the EMD of Pb-208. The cross sections of the emission of a single proton accompanied by the emission of one, two, or three neutrons in EMD were also measured. The data are significantly overestimated by the RELDIS model, which predicts that the (1p,1n), (1p,2n), and (1p,3n) cross sections are very similar to the cross sections for the production of the thallium isotopes Tl-206,Tl-205,Tl-204.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

10303 - Particles and field physics

Project

<a href="/en/project/LM2023040" target="_blank" >LM2023040: Research infrastructure for experiments at CERN</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>S - Specificky vyzkum na vysokych skolach

Publication year

2025

Confidentiality

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

Name of the periodical

PHYSICAL REVIEW C

ISSN

2469-9985

e-ISSN

2469-9993

Volume of the periodical

111

Issue of the periodical within the volume

5

Country of publishing house

US - UNITED STATES

Number of pages

18

Pages from-to

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UT code for WoS article

001498323800001

EID of the result in the Scopus database

2-s2.0-105005143987