The thermal proton yield anomaly in Pb-Pb collisions at the LHC and its resolution
We propose a resolution of the discrepancy between the proton yield predicted by the statistical hadronization approach and data on hadron production in ultra-relativistic nuclear collisions at the LHC. Applying the S-matrix formulation of statistical mechanics to include pion-nucleon interactions,...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2019-05-01
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| Series: | Physics Letters B |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S0370269319302217 |
| _version_ | 1818444520377810944 |
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| author | Anton Andronic Peter Braun-Munzinger Bengt Friman Pok Man Lo Krzysztof Redlich Johanna Stachel |
| author_facet | Anton Andronic Peter Braun-Munzinger Bengt Friman Pok Man Lo Krzysztof Redlich Johanna Stachel |
| author_sort | Anton Andronic |
| collection | DOAJ |
| description | We propose a resolution of the discrepancy between the proton yield predicted by the statistical hadronization approach and data on hadron production in ultra-relativistic nuclear collisions at the LHC. Applying the S-matrix formulation of statistical mechanics to include pion-nucleon interactions, we reexamine their contribution to the proton yield, taking resonance widths and the presence of nonresonant correlations into account. The effect of multi-pion-nucleon interactions is estimated using lattice QCD results on the baryon-charge susceptibility. We show that a consistent implementation of these features in the statistical hadronization model, leads to a reduction of the predicted proton yield, which then quantitatively matches data of the ALICE collaboration for Pb-Pb collisions at the LHC. |
| first_indexed | 2024-12-14T19:17:14Z |
| format | Article |
| id | doaj.art-dd83203a535d48ddac290448233c867d |
| institution | Directory Open Access Journal |
| issn | 0370-2693 |
| language | English |
| last_indexed | 2024-12-14T19:17:14Z |
| publishDate | 2019-05-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Physics Letters B |
| spelling | doaj.art-dd83203a535d48ddac290448233c867d2022-12-21T22:50:32ZengElsevierPhysics Letters B0370-26932019-05-01792304309The thermal proton yield anomaly in Pb-Pb collisions at the LHC and its resolutionAnton Andronic0Peter Braun-Munzinger1Bengt Friman2Pok Man Lo3Krzysztof Redlich4Johanna Stachel5Institut für Kernphysik, Universität Münster, D-48149 Münster, GermanyExtreme Matter Institute EMMI, GSI-Helmholtzzentrum für Schwerionenforschung, D-64291 Darmstadt, Germany; Physikalisches Institut der Universität Heidelberg, D-69120 Heidelberg, Germany; Institute of Particle Physics and Key Laboratory of Quark and Lepton Physics (MOE), Central China Normal University, Wuhan 430079, ChinaGSI-Helmholzzentrum für Schwerionenforschung, D-64291 Darmstadt, GermanyInstitute of Theoretical Physics, University of Wroclaw, PL-50204 Wrocław, Poland; Corresponding author.Institute of Theoretical Physics, University of Wroclaw, PL-50204 Wrocław, Poland; Fakultät für Physik, Universität Bielefeld, D-33615 Bielefeld, Germany; Extreme Matter Institute EMMI, GSI-Helmholtzzentrum für Schwerionenforschung, D-64291 Darmstadt, GermanyPhysikalisches Institut der Universität Heidelberg, D-69120 Heidelberg, Germany; Extreme Matter Institute EMMI, GSI-Helmholtzzentrum für Schwerionenforschung, D-64291 Darmstadt, GermanyWe propose a resolution of the discrepancy between the proton yield predicted by the statistical hadronization approach and data on hadron production in ultra-relativistic nuclear collisions at the LHC. Applying the S-matrix formulation of statistical mechanics to include pion-nucleon interactions, we reexamine their contribution to the proton yield, taking resonance widths and the presence of nonresonant correlations into account. The effect of multi-pion-nucleon interactions is estimated using lattice QCD results on the baryon-charge susceptibility. We show that a consistent implementation of these features in the statistical hadronization model, leads to a reduction of the predicted proton yield, which then quantitatively matches data of the ALICE collaboration for Pb-Pb collisions at the LHC.http://www.sciencedirect.com/science/article/pii/S0370269319302217 |
| spellingShingle | Anton Andronic Peter Braun-Munzinger Bengt Friman Pok Man Lo Krzysztof Redlich Johanna Stachel The thermal proton yield anomaly in Pb-Pb collisions at the LHC and its resolution Physics Letters B |
| title | The thermal proton yield anomaly in Pb-Pb collisions at the LHC and its resolution |
| title_full | The thermal proton yield anomaly in Pb-Pb collisions at the LHC and its resolution |
| title_fullStr | The thermal proton yield anomaly in Pb-Pb collisions at the LHC and its resolution |
| title_full_unstemmed | The thermal proton yield anomaly in Pb-Pb collisions at the LHC and its resolution |
| title_short | The thermal proton yield anomaly in Pb-Pb collisions at the LHC and its resolution |
| title_sort | thermal proton yield anomaly in pb pb collisions at the lhc and its resolution |
| url | http://www.sciencedirect.com/science/article/pii/S0370269319302217 |
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