Estimate of background baseline and upper limit on the chiral magnetic effect in isobar collisions at √sNN=200 GeV at the BNL Relativistic Heavy Ion Collider
For the search of the chiral magnetic effect (CME), STAR previously presented the results from isobar collisions (9644Ru+9644Ru, 9640Zr+9640Zr) obtained through a blind analysis. The ratio of results in Ru+Ru to Zr+Zr collisions for the CME-sensitive charge-dependent azimuthal correlator (Δ𝛾), norm...
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| Hauptverfasser: | , , , , |
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| Körperschaft: | |
| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
2024
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| In: |
Physical review
Year: 2024, Jahrgang: 110, Heft: 1, Pages: 1-18 |
| ISSN: | 2469-9993 |
| DOI: | 10.1103/PhysRevC.110.014905 |
| Online-Zugang: | Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1103/PhysRevC.110.014905 Verlag, lizenzpflichtig, Volltext: https://link.aps.org/doi/10.1103/PhysRevC.110.014905 
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| Verfasserangaben: | STAR Collaboration* |
MARC
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| 245 | 1 | 0 | |a Estimate of background baseline and upper limit on the chiral magnetic effect in isobar collisions at √sNN=200 GeV at the BNL Relativistic Heavy Ion Collider |c STAR Collaboration* |
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| 246 | 3 | 3 | |a Estimate of background baseline and upper limit on the chiral magnetic effect in isobar collisions at square root sNN = 200 GeV at the BNL Relativistic Heavy Ion Collider |
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| 500 | |a Veröffentlicht: 09. Juli 2024 | ||
| 500 | |a *STAR Collaboration: M.I. Abdulhamid, I.M. Deppner, Y.H. Leung, Y. Söhngen, P.C. Weidenkaff [und 351 weitere Personen] | ||
| 500 | |a Im Titel steht der Ausdruck "sNN" unter dem Wurzelsymbol | ||
| 500 | |a Gesehen am 25.06.2025 | ||
| 520 | |a For the search of the chiral magnetic effect (CME), STAR previously presented the results from isobar collisions (9644Ru+9644Ru, 9640Zr+9640Zr) obtained through a blind analysis. The ratio of results in Ru+Ru to Zr+Zr collisions for the CME-sensitive charge-dependent azimuthal correlator (Δ), normalized by elliptic anisotropy (2), was observed to be close to but systematically larger than the inverse multiplicity ratio. The background baseline for the isobar ratio, =(Δ/2)Ru(Δ/2)Zr, is naively expected to be (1/)Ru(1/)Zr; however, genuine two- and three-particle correlations are expected to alter it. We estimate the contributions to from those correlations, utilizing both the isobar data and hijing simulations. After including those contributions, we arrive at a final background baseline for , which is consistent with the isobar data. We extract an upper limit for the CME fraction in the Δ measurement of approximately 10% at a 95% confidence level on in isobar collisions at √=200GeV, with an expected 15% difference in their squared magnetic fields. | ||
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