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.
{ "_oai": { "updated": "2019-06-11T12:56:29Z", "id": "oai:repo.scoap3.org:46552", "sets": [ "PLB" ] }, "authors": [ { "affiliations": [ { "country": "Germany", "value": "Institut f\u00fcr Kernphysik, Universit\u00e4t M\u00fcnster, M\u00fcnster, Germany" } ], "surname": "Andronic", "given_names": "Anton", "full_name": "Andronic, Anton" }, { "affiliations": [ { "country": "Germany", "value": "Extreme Matter Institute EMMI, GSI-Helmholtzzentrum f\u00fcr Schwerionenforschung, Darmstadt, Germany" }, { "country": "Germany", "value": "Physikalisches Institut der Universit\u00e4t Heidelberg, Heidelberg, Germany" }, { "country": "China", "value": "Institute of Particle Physics, Key Laboratory of Quark and Lepton Physics (MOE), Central China Normal University, Wuhan, China" } ], "surname": "Braun-Munzinger", "given_names": "Peter", "full_name": "Braun-Munzinger, Peter" }, { "affiliations": [ { "country": "Germany", "value": "GSI, Helmholzzentrum f\u00fcr Schwerionenforschung, Darmstadt, Germany" } ], "surname": "Friman", "given_names": "Bengt", "full_name": "Friman, Bengt" }, { "surname": "Lo", "given_names": "Pok Man", "affiliations": [ { "country": "Poland", "value": "Institute of Theoretical Physics, University of Wroclaw, Wroc\u0142aw, Poland" } ], "full_name": "Lo, Pok Man", "orcid": "0000-0002-2866-7996", "email": "pmlo@gsi.de" }, { "affiliations": [ { "country": "Poland", "value": "Institute of Theoretical Physics, University of Wroclaw, Wroc\u0142aw, Poland" }, { "country": "Germany", "value": "Fakult\u00e4t f\u00fcr Physik, Universit\u00e4t Bielefeld, Bielefeld, Germany" }, { "country": "Germany", "value": "Extreme Matter Institute EMMI, GSI-Helmholtzzentrum f\u00fcr Schwerionenforschung, Darmstadt, Germany" } ], "surname": "Redlich", "given_names": "Krzysztof", "full_name": "Redlich, Krzysztof" }, { "affiliations": [ { "country": "Germany", "value": "Physikalisches Institut der Universit\u00e4t Heidelberg, Heidelberg, Germany" }, { "country": "Germany", "value": "Extreme Matter Institute EMMI, GSI-Helmholtzzentrum f\u00fcr Schwerionenforschung, Darmstadt, Germany" } ], "surname": "Stachel", "given_names": "Johanna", "full_name": "Stachel, Johanna" } ], "titles": [ { "source": "Elsevier", "title": "The thermal proton yield anomaly in Pb-Pb collisions at the LHC and its resolution" } ], "dois": [ { "value": "10.1016/j.physletb.2019.03.052" } ], "publication_info": [ { "page_end": "309", "journal_title": "Physics Letters B", "material": "article", "journal_volume": "792 C", "artid": "34541", "year": 2019, "page_start": "304" } ], "$schema": "http://repo.scoap3.org/schemas/hep.json", "acquisition_source": { "date": "2019-06-11T12:27:31.033097", "source": "Elsevier", "method": "Elsevier", "submission_number": "7be9c0a08c2b11e9a46302163e01809a" }, "page_nr": [ 6 ], "license": [ { "url": "http://creativecommons.org/licenses/by/3.0/", "license": "CC-BY-3.0" } ], "copyright": [ { "holder": "The Author(s)", "statement": "The Author(s)", "year": "2019" } ], "control_number": "46552", "record_creation_date": "2019-04-02T14:30:18.081641", "_files": [ { "checksum": "md5:9a53b0798c79e2c2b7d4e509173c1666", "filetype": "xml", "bucket": "332fc9a7-7741-42b8-bb2b-8cdf5c7a6515", "version_id": "1ca50067-8c9d-4723-a049-1cfced9abe7f", "key": "10.1016/j.physletb.2019.03.052.xml", "size": 97340 }, { "checksum": "md5:4bd64f7fdc2e249b98ed276607072031", "filetype": "pdf", "bucket": "332fc9a7-7741-42b8-bb2b-8cdf5c7a6515", "version_id": "da439c4b-1dbe-47f8-835a-3b5ad1843fac", "key": "10.1016/j.physletb.2019.03.052.pdf", "size": 518645 }, { "checksum": "md5:ebb503524f0c90ba4e5d7cdcdcc7f55a", "filetype": "pdf/a", "bucket": "332fc9a7-7741-42b8-bb2b-8cdf5c7a6515", "version_id": "e7a837d7-65b7-48ae-b521-190238dfab8b", "key": "10.1016/j.physletb.2019.03.052_a.pdf", "size": 865542 } ], "collections": [ { "primary": "Physics Letters B" } ], "abstracts": [ { "source": "Elsevier", "value": "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." } ], "imprints": [ { "date": "2019-04-02", "publisher": "Elsevier" } ] }