Observation of the Electromagnetic Field Effect via Charge-Dependent Directed Flow in Heavy-Ion Collisions at the Relativistic Heavy Ion Collider
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21340%2F24%3A00377132" target="_blank" >RIV/68407700:21340/24:00377132 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.1103/PhysRevX.14.011028" target="_blank" >https://doi.org/10.1103/PhysRevX.14.011028</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1103/PhysRevX.14.011028" target="_blank" >10.1103/PhysRevX.14.011028</a>
Alternative languages
Result language
angličtina
Original language name
Observation of the Electromagnetic Field Effect via Charge-Dependent Directed Flow in Heavy-Ion Collisions at the Relativistic Heavy Ion Collider
Original language description
The deconfined quark-gluon plasma (QGP) created in relativistic heavy-ion collisions enables the exploration of the fundamental properties of matter under extreme conditions. Noncentral collisions can produce strong magnetic fields on the order of 1018 G, which offers a probe into the electrical conductivity of the QGP. In particular, quarks and antiquarks carry opposite charges and receive contrary electromagnetic forces that alter their momenta. This phenomenon can be manifested in the collective motion of final -state particles, specifically in the rapidity-odd directed flow, denoted as v1oy thorn . Here, we present the charge-dependent measurements of dv1=dy near midrapidities for pi ⠂, K ⠂, and pop over bar thorn in Au thorn Au and isobar (96 44Ru thorn 9644Ru and 9640Zr thorn 96 40Zr) collisions at ffiffiffiffiffiffiffi p 1/4 200 GeV, and in Au thorn Au collisions at sNN 27 GeV, recorded by the STAR detector at the Relativistic Heavy Ion Collider. The combined dependence of the v1 signal on collision system, particle species, and collision centrality can be qualitatively and semiquantitatively understood as several effects on constituent quarks. While the results in central events can be explained by the u and d quarks transported from initial -state nuclei, those in peripheral events reveal the impacts of the electromagnetic field on the QGP. Our data put valuable constraints on the electrical conductivity of the QGP in theoretical calculations.
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
2024
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 X
ISSN
2160-3308
e-ISSN
—
Volume of the periodical
14
Issue of the periodical within the volume
1
Country of publishing house
US - UNITED STATES
Number of pages
12
Pages from-to
—
UT code for WoS article
001190905000001
EID of the result in the Scopus database
2-s2.0-85186237841