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| Main Authors: | , , , , |
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| Format: | Preprint |
| Published: |
2022
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2203.15282 |
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| _version_ | 1866915133369876480 |
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| author | Aggarwal, Madan M. Attri, Anjali Parmar, Sonia Sharma, Anjali Singh, Jagbir |
| author_facet | Aggarwal, Madan M. Attri, Anjali Parmar, Sonia Sharma, Anjali Singh, Jagbir |
| contents | This study explores the Chiral Magnetic Effect (CME) in ultra-relativistic heavy-ion collisions. The CME, observed as back-to-back charge separation along the magnetic field axis, is investigated using the newly developed Sliding Dumbbell Method (SDM) applied to Au+Au events at a center-of-mass energy $\sqrt{s}_{\mathrm{NN}}$ = 200 GeV generated by the AMPT model with string melting configuration. The CME-like signal is externally injected in events by flipping charges of pairs of the particles perpendicular to the reaction plane. The study reports a significant enhancement of the CME-sensitive 3-particle $γ$ correlator in events with high back-to-back charge separation, in a given collision centrality. Additionally, a linear relationship is observed between the $\sqrt{|γ|}$ correlator for same-sign charge pairs and positive charge asymmetry ($\langle A{^+}\rangle$) across the dumbbell in CME-enriched sub-samples. Furthermore, the fraction of CME in $Δγ$ (difference between opposite and same sign $γ$ correlators) is presented across different collision centralities having different percentages of externally injected CME-like signal. Overall, the research aims to understand and detect the Chiral Magnetic Effect through innovative experimental method and detailed analysis of event structure. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2203_15282 |
| institution | arXiv |
| publishDate | 2022 |
| record_format | arxiv |
| spellingShingle | Sliding Dumbbell Method to search for the CME in heavy ion collisions Aggarwal, Madan M. Attri, Anjali Parmar, Sonia Sharma, Anjali Singh, Jagbir Nuclear Theory High Energy Physics - Phenomenology This study explores the Chiral Magnetic Effect (CME) in ultra-relativistic heavy-ion collisions. The CME, observed as back-to-back charge separation along the magnetic field axis, is investigated using the newly developed Sliding Dumbbell Method (SDM) applied to Au+Au events at a center-of-mass energy $\sqrt{s}_{\mathrm{NN}}$ = 200 GeV generated by the AMPT model with string melting configuration. The CME-like signal is externally injected in events by flipping charges of pairs of the particles perpendicular to the reaction plane. The study reports a significant enhancement of the CME-sensitive 3-particle $γ$ correlator in events with high back-to-back charge separation, in a given collision centrality. Additionally, a linear relationship is observed between the $\sqrt{|γ|}$ correlator for same-sign charge pairs and positive charge asymmetry ($\langle A{^+}\rangle$) across the dumbbell in CME-enriched sub-samples. Furthermore, the fraction of CME in $Δγ$ (difference between opposite and same sign $γ$ correlators) is presented across different collision centralities having different percentages of externally injected CME-like signal. Overall, the research aims to understand and detect the Chiral Magnetic Effect through innovative experimental method and detailed analysis of event structure. |
| title | Sliding Dumbbell Method to search for the CME in heavy ion collisions |
| topic | Nuclear Theory High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2203.15282 |