Search for the chiral magnetic effect with isobar collisions at √sNN = 200 GeV by the STAR Collaboration at the BNL Relativistic Heavy Ion Collider
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389005%3A_____%2F22%3A00552578" target="_blank" >RIV/61389005:_____/22:00552578 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.1103/PhysRevC.105.014901" target="_blank" >https://doi.org/10.1103/PhysRevC.105.014901</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1103/PhysRevC.105.014901" target="_blank" >10.1103/PhysRevC.105.014901</a>
Alternative languages
Result language
angličtina
Original language name
Search for the chiral magnetic effect with isobar collisions at √sNN = 200 GeV by the STAR Collaboration at the BNL Relativistic Heavy Ion Collider
Original language description
The chiral magnetic effect (CME) is predicted to occur as a consequence of a local violation of P and CP symmetries of the strong interaction amidst a strong electromagnetic field generated in relativistic heavy-ion collisions. Experimental manifestation of the CME involves a separation of positively and negatively charged hadrons along the direction of the magnetic field. Previous measurements of the CME-sensitive charge-separation observables remain inconclusive because of large background contributions. To better control the influence of signal and backgrounds, the STAR Collaboration performed a blind analysis of a large data sample of approximately 3.8 billion isobar collisions of Ru-96(44) +Ru-96(44) and Zr-96(40) + Zr-96(40) at root s(NN) = 200 GeV. Prior to the blind analysis, the CME signatures are predefined as a significant excess of the CME-sensitive observables in Ru + Ru collisions over those in Zr + Zr collisions, owing to a larger magnetic field in the former. A precision down to 0.4% is achieved, as anticipated, in the relative magnitudes of the pertinent observables between the two isobar systems. Observed differences in the multiplicity and flow harmonics at the matching centrality indicate that the magnitude of the CME background is different between the two species. No CME signature that satisfies the predefined criteria has been observed in isobar collisions in this blind analysis.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10304 - Nuclear physics
Result continuities
Project
<a href="/en/project/LTT18002" target="_blank" >LTT18002: Study of new properties of nuclear matter in the international experiment STAR</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2022
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
105
Issue of the periodical within the volume
1
Country of publishing house
US - UNITED STATES
Number of pages
34
Pages from-to
014901
UT code for WoS article
000745301700002
EID of the result in the Scopus database
2-s2.0-85123300122