Excited cluster states: A new source for proton number fluctuations in the high baryon density regime
We calculate the contribution of the decay products of excited nuclear cluster states to the event-by-event fluctuations of protons in the energy range from sNN=2−5 GeV within the statistical model. We find that the inclusion of the excited nuclear clusters yields corrections to all cumulant ratios,...
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Elsevier
2025-02-01
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| Series: | Physics Letters B |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S037026932500022X |
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| author | Boris Tomášik Marcus Bleicher |
| author_facet | Boris Tomášik Marcus Bleicher |
| author_sort | Boris Tomášik |
| collection | DOAJ |
| description | We calculate the contribution of the decay products of excited nuclear cluster states to the event-by-event fluctuations of protons in the energy range from sNN=2−5 GeV within the statistical model. We find that the inclusion of the excited nuclear clusters yields corrections to all cumulant ratios, ranging from 1% for ratio of second to first-order cumulant to 100% for the sixth to second order cumulant towards the lowest inspected energy. As expected the contribution of excited cluster states is most important at low energies sNN<3.5 GeV and becomes negligible at higher collision energies. Especially in light of the expected ultra-high precision data from CBM at FAIR, this new contribution is important to allow for a quantitative comparison with (potentially later available) lattice QCD or effective model results. |
| format | Article |
| id | doaj-art-279e79e98fdd4581a3d38175c0488ef9 |
| institution | Kabale University |
| issn | 0370-2693 |
| language | English |
| publishDate | 2025-02-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Physics Letters B |
| spelling | doaj-art-279e79e98fdd4581a3d38175c0488ef92025-02-10T04:33:55ZengElsevierPhysics Letters B0370-26932025-02-01861139262Excited cluster states: A new source for proton number fluctuations in the high baryon density regimeBoris Tomášik0Marcus Bleicher1Fakulta jaderná a fyzikálně inženýrská, České vysoké učení technické v Praze, Břehová 7, Praha 1, 11519, Czech Republic; Fakulta prírodných vied, Univerzita Mateja Bela, Tajovského 40, Banská Bystrica, 97401, SlovakiaInstitut für Theoretische Physik, Goethe Universität Frankfurt, Max-von-Laue-Str. 1, Frankfurt am Main, 60438, Germany; Helmholtz Research Academy Hesse for FAIR (HFHF), GSI Helmholtzzentrum für Schwerionenforschung GmbH, Campus Frankfurt, Max-von-Laue-Str. 12, Frankfurt am Main, 60438, Germany; Corresponding author.We calculate the contribution of the decay products of excited nuclear cluster states to the event-by-event fluctuations of protons in the energy range from sNN=2−5 GeV within the statistical model. We find that the inclusion of the excited nuclear clusters yields corrections to all cumulant ratios, ranging from 1% for ratio of second to first-order cumulant to 100% for the sixth to second order cumulant towards the lowest inspected energy. As expected the contribution of excited cluster states is most important at low energies sNN<3.5 GeV and becomes negligible at higher collision energies. Especially in light of the expected ultra-high precision data from CBM at FAIR, this new contribution is important to allow for a quantitative comparison with (potentially later available) lattice QCD or effective model results.http://www.sciencedirect.com/science/article/pii/S037026932500022XProton number fluctuationsQCD phase diagramRelativistic heavy-ion collisions |
| spellingShingle | Boris Tomášik Marcus Bleicher Excited cluster states: A new source for proton number fluctuations in the high baryon density regime Physics Letters B Proton number fluctuations QCD phase diagram Relativistic heavy-ion collisions |
| title | Excited cluster states: A new source for proton number fluctuations in the high baryon density regime |
| title_full | Excited cluster states: A new source for proton number fluctuations in the high baryon density regime |
| title_fullStr | Excited cluster states: A new source for proton number fluctuations in the high baryon density regime |
| title_full_unstemmed | Excited cluster states: A new source for proton number fluctuations in the high baryon density regime |
| title_short | Excited cluster states: A new source for proton number fluctuations in the high baryon density regime |
| title_sort | excited cluster states a new source for proton number fluctuations in the high baryon density regime |
| topic | Proton number fluctuations QCD phase diagram Relativistic heavy-ion collisions |
| url | http://www.sciencedirect.com/science/article/pii/S037026932500022X |
| work_keys_str_mv | AT boristomasik excitedclusterstatesanewsourceforprotonnumberfluctuationsinthehighbaryondensityregime AT marcusbleicher excitedclusterstatesanewsourceforprotonnumberfluctuationsinthehighbaryondensityregime |