Energy dependence of polarized γγ e+e- in peripheral Au plus Au collisions at root sNN=54.4 and 200 GeV with the STAR experiment at RHIC
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21340%2F25%3A00389032" target="_blank" >RIV/68407700:21340/25:00389032 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.1103/PhysRevC.111.014909" target="_blank" >https://doi.org/10.1103/PhysRevC.111.014909</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1103/PhysRevC.111.014909" target="_blank" >10.1103/PhysRevC.111.014909</a>
Alternative languages
Result language
angličtina
Original language name
Energy dependence of polarized γγ e+e- in peripheral Au plus Au collisions at root sNN=54.4 and 200 GeV with the STAR experiment at RHIC
Original language description
We report the differential yields at mid-rapidity of the Breit-Wheeler process (gamma gamma e(+)e(-)) in peripheral Au + Au collisions at root sNN = 54.4 and 200 GeV with the STAR experiment at the Relativistic Heavy Ion Collider (RHIC), as a function of energy root sNN, e(+) e(-) transverse momentum pT, p(T)(2), invariant mass Mee, and azimuthal angle. In the invariant mass range of 0.4 < M-ee < 2.6 GeV/c(2) at low transverse momentum ( pT < 0.15 GeV/c), the yields increase while the pair root < p(T)(2)> decreases with increasing root sNN, a feature that is correctly predicted by the QED calculation. The energy dependencies of the measured quantities are sensitive to the nuclear form factor, infrared divergence and photon polarization. The data are compiled and used to extract the charge radius of the Au nucleus.
Czech name
—
Czech description
—
Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
—
OECD FORD branch
10303 - Particles and field physics
Result continuities
Project
<a href="/en/project/LM2023034" target="_blank" >LM2023034: Brookhaven National Laboratory - Participation of the Czech Republic</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2025
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
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
1
Country of publishing house
US - UNITED STATES
Number of pages
16
Pages from-to
—
UT code for WoS article
001420595700001
EID of the result in the Scopus database
2-s2.0-85215832792