Recent experimental results in proton-proton and in proton-nucleus collisions at Large Hadron Collider energies show a strong similarity to those observed in nucleus-nucleus collisions, where the formation of a quark-gluon plasma is expected. We discuss the comparison between small colliding systems and nucleus-nucleus collisions, for (a) the strangeness suppression factor and yields of multi-strange hadrons; (b) the average transverse momentum, , with particular attention to the low region where soft, nonperturbative effects are important; and (c) the elliptic flow scaled by the participant eccentricity. The universal behavior in hadronic and nuclear high energy collisions emerges for all these observables in terms of a specific dynamical variable which corresponds to the entropy density of initial system in the collision and which takes into account the transverse size of the initial configuration and its fluctuations.
{ "_oai": { "updated": "2021-08-29T07:29:55Z", "id": "oai:repo.scoap3.org:54313", "sets": [ "PRC" ] }, "authors": [ { "raw_name": "P. Castorina", "affiliations": [ { "country": "Italy", "value": "INFN, Sezione di Catania, I-95123 Catania, Italy" }, { "country": "Czech Republic", "value": "Institute of Particle and Nuclear Physics, Faculty of Mathematics and Physics, Charles University, V Hole\u0161ovi\u010dk\u00e1ch 2, 18000 Prague 8, Czech Republic" } ], "surname": "Castorina", "given_names": "P.", "full_name": "Castorina, P." }, { "raw_name": "A. Iorio", "affiliations": [ { "country": "Czech Republic", "value": "Institute of Particle and Nuclear Physics, Faculty of Mathematics and Physics, Charles University, V Hole\u0161ovi\u010dk\u00e1ch 2, 18000 Prague 8, Czech Republic" } ], "surname": "Iorio", "given_names": "A.", "full_name": "Iorio, A." }, { "raw_name": "D. Lanteri", "affiliations": [ { "country": "Italy", "value": "INFN, Sezione di Catania, I-95123 Catania, Italy" }, { "country": "Italy", "value": "Dipartimento di Fisica e Astronomia, Universit\u00e0 di Catania, I-95123 Catania, Italy" } ], "surname": "Lanteri", "given_names": "D.", "full_name": "Lanteri, D." }, { "raw_name": "H. Satz", "affiliations": [ { "country": "Germany", "value": "Fakult\u00e4t f\u00fcr Physik, Universit\u00e4t Bielefeld, D-33501 Bielefeld, Germany" } ], "surname": "Satz", "given_names": "H.", "full_name": "Satz, H." }, { "raw_name": "M. Spousta", "affiliations": [ { "country": "Czech Republic", "value": "Institute of Particle and Nuclear Physics, Faculty of Mathematics and Physics, Charles University, V Hole\u0161ovi\u010dk\u00e1ch 2, 18000 Prague 8, Czech Republic" } ], "surname": "Spousta", "given_names": "M.", "full_name": "Spousta, M." } ], "titles": [ { "source": "APS", "title": "Universality in hadronic and nuclear collisions at high energy" } ], "dois": [ { "value": "10.1103/PhysRevC.101.054902" } ], "publication_info": [ { "journal_volume": "101", "journal_title": "Physical Review C", "material": "article", "journal_issue": "5", "year": 2020 } ], "$schema": "http://repo.scoap3.org/schemas/hep.json", "acquisition_source": { "date": "2021-08-25T10:41:07.562720", "source": "APS", "method": "APS", "submission_number": "810b323c058f11ecb53772fd3742099d" }, "page_nr": [ 5 ], "license": [ { "url": "https://creativecommons.org/licenses/by/4.0/", "license": "CC-BY-4.0" } ], "copyright": [ { "statement": "Published by the American Physical Society", "year": "2020" } ], "control_number": "54313", "record_creation_date": "2020-05-11T18:30:07.152327", "_files": [ { "checksum": "md5:dba505a0194eddc2706e505f597baad0", "filetype": "pdf", "bucket": "51b55344-0cb9-47c9-966a-9b0c231181a1", "version_id": "2b8efe24-84e0-4b1e-8984-f449aa1f4a93", "key": "10.1103/PhysRevC.101.054902.pdf", "size": 608552 }, { "checksum": "md5:eb9615464a751eac51ac3a8174b4d980", "filetype": "xml", "bucket": "51b55344-0cb9-47c9-966a-9b0c231181a1", "version_id": "685f7d59-7f7f-4e6d-8b3d-6981c6cd996c", "key": "10.1103/PhysRevC.101.054902.xml", "size": 79216 } ], "collections": [ { "primary": "HEP" }, { "primary": "Citeable" }, { "primary": "Published" } ], "arxiv_eprints": [ { "categories": [ "hep-ph", "nucl-th" ], "value": "1912.12513" } ], "abstracts": [ { "source": "APS", "value": "Recent experimental results in proton-proton and in proton-nucleus collisions at Large Hadron Collider energies show a strong similarity to those observed in nucleus-nucleus collisions, where the formation of a quark-gluon plasma is expected. We discuss the comparison between small colliding systems and nucleus-nucleus collisions, for (a) the strangeness suppression factor <math><msub><mi>\u03b3</mi><mi>s</mi></msub></math> and yields of multi-strange hadrons; (b) the average transverse momentum, <math><msub><mi>p</mi><mi>t</mi></msub></math>, with particular attention to the low <math><msub><mi>p</mi><mi>t</mi></msub></math> region where soft, nonperturbative effects are important; and (c) the elliptic flow scaled by the participant eccentricity. The universal behavior in hadronic and nuclear high energy collisions emerges for all these observables in terms of a specific dynamical variable which corresponds to the entropy density of initial system in the collision and which takes into account the transverse size of the initial configuration and its fluctuations." } ], "imprints": [ { "date": "2020-05-11", "publisher": "APS" } ] }