Measurement of the prompt-production cross-section ratio σ(χc2)/σ(χc1) in pPb collisions at √sNN=8.16 TeV
This Letter reports the first measurement of prompt $\chi_{c1}$ and $\chi_{c2}$ charmonium production in nuclear collisions at Large Hadron Collider energies. The cross-section ratio $\sigma(\chi_{c2}) / \sigma(\chi_{c1})$ is measured in $p$Pb collisions at $\sqrt{s_{NN}}$ = 8.16 TeV, collected...
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| Formaat: | Artikel |
| Taal: | English |
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American Physical Society (APS)
2022
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| Online toegang: | https://hdl.handle.net/1721.1/142451 |
| _version_ | 1826214044150792192 |
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| author | Williams, Michael |
| author2 | Massachusetts Institute of Technology. Department of Physics |
| author_facet | Massachusetts Institute of Technology. Department of Physics Williams, Michael |
| author_sort | Williams, Michael |
| collection | MIT |
| description | This Letter reports the first measurement of prompt $\chi_{c1}$ and
$\chi_{c2}$ charmonium production in nuclear collisions at Large Hadron
Collider energies. The cross-section ratio $\sigma(\chi_{c2}) /
\sigma(\chi_{c1})$ is measured in $p$Pb collisions at $\sqrt{s_{NN}}$ = 8.16
TeV, collected with the LHCb experiment. The $\chi_{c1,2}$ states are
reconstructed via their decay to a $\rm{J}/\psi$ meson, subsequently decaying
into a pair of oppositely charged muons, and a photon, which is reconstructed
in the calorimeter or via its conversion in the detector material. The
cross-section ratio is consistent with unity in the two considered rapidity
regions. Comparison with a corresponding cross-section ratio previously
measured by the LHCb collaboration in $pp$ collisions suggests that $\chi_{c1}$
and $\chi_{c2}$ states are similarly affected by nuclear effects occurring in
$p$Pb collisions. |
| first_indexed | 2024-09-23T15:58:55Z |
| format | Article |
| id | mit-1721.1/142451 |
| institution | Massachusetts Institute of Technology |
| language | English |
| last_indexed | 2024-09-23T15:58:55Z |
| publishDate | 2022 |
| publisher | American Physical Society (APS) |
| record_format | dspace |
| spelling | mit-1721.1/1424512023-02-10T19:03:23Z Measurement of the prompt-production cross-section ratio σ(χc2)/σ(χc1) in pPb collisions at √sNN=8.16 TeV Williams, Michael Massachusetts Institute of Technology. Department of Physics This Letter reports the first measurement of prompt $\chi_{c1}$ and $\chi_{c2}$ charmonium production in nuclear collisions at Large Hadron Collider energies. The cross-section ratio $\sigma(\chi_{c2}) / \sigma(\chi_{c1})$ is measured in $p$Pb collisions at $\sqrt{s_{NN}}$ = 8.16 TeV, collected with the LHCb experiment. The $\chi_{c1,2}$ states are reconstructed via their decay to a $\rm{J}/\psi$ meson, subsequently decaying into a pair of oppositely charged muons, and a photon, which is reconstructed in the calorimeter or via its conversion in the detector material. The cross-section ratio is consistent with unity in the two considered rapidity regions. Comparison with a corresponding cross-section ratio previously measured by the LHCb collaboration in $pp$ collisions suggests that $\chi_{c1}$ and $\chi_{c2}$ states are similarly affected by nuclear effects occurring in $p$Pb collisions. 2022-05-10T15:28:12Z 2022-05-10T15:28:12Z 2021 2022-05-10T15:24:59Z Article http://purl.org/eprint/type/JournalArticle https://hdl.handle.net/1721.1/142451 Williams, Michael. 2021. "Measurement of the prompt-production cross-section ratio σ(χc2)/σ(χc1) in pPb collisions at √sNN=8.16 TeV." Physical Review C, 103 (6). en 10.1103/PHYSREVC.103.064905 Physical Review C Creative Commons Attribution 4.0 International License https://creativecommons.org/licenses/by/4.0 application/pdf American Physical Society (APS) APS |
| spellingShingle | Williams, Michael Measurement of the prompt-production cross-section ratio σ(χc2)/σ(χc1) in pPb collisions at √sNN=8.16 TeV |
| title | Measurement of the prompt-production cross-section ratio σ(χc2)/σ(χc1) in pPb collisions at √sNN=8.16 TeV |
| title_full | Measurement of the prompt-production cross-section ratio σ(χc2)/σ(χc1) in pPb collisions at √sNN=8.16 TeV |
| title_fullStr | Measurement of the prompt-production cross-section ratio σ(χc2)/σ(χc1) in pPb collisions at √sNN=8.16 TeV |
| title_full_unstemmed | Measurement of the prompt-production cross-section ratio σ(χc2)/σ(χc1) in pPb collisions at √sNN=8.16 TeV |
| title_short | Measurement of the prompt-production cross-section ratio σ(χc2)/σ(χc1) in pPb collisions at √sNN=8.16 TeV |
| title_sort | measurement of the prompt production cross section ratio σ χc2 σ χc1 in ppb collisions at √snn 8 16 tev |
| url | https://hdl.handle.net/1721.1/142451 |
| work_keys_str_mv | AT williamsmichael measurementofthepromptproductioncrosssectionratioschc2schc1inppbcollisionsatsnn816tev |