European Physical Journal A, volume 58, issue 9, publication number 184
Peeling away neutron skin in ultracentral collisions of relativistic nuclei
Publication type: Journal Article
Publication date: 2022-09-22
Journal:
European Physical Journal A
Quartile SCImago
Q2
Quartile WOS
Q2
Impact factor: 2.7
ISSN: 14346001, 1434601X
Nuclear and High Energy Physics
Abstract
In heavy nuclei the ratio between local densities of neutrons and protons increases towards the nuclear periphery. The excess of neutrons is known as the neutron skin (NS) with a subtle difference ( $$<0.5$$ fm) between the r.m.s radii of the distributions of neutrons and protons. We show that the presence of NS in $$^{208}$$ Pb leads to extra spectator neutrons in ultracentral $$^{208}$$ Pb– $$^{208}$$ Pb collisions at the CERN SPS and LHC. The yields of spectator neutrons and protons were calculated within a new version of Abrasion–Ablation Monte Carlo for Colliders model (AAMCC-MST) taking into account NS and pre-equilibrium clustering of spectator matter. While the average numbers of spectator neutrons and protons in ultracentral collisions vary insignificantly, the cross sections of emission of certain numbers of spectator neutrons in events with 0,1,...5 spectator protons are changed by 50–250%, depending on the thickness of NS. These cross sections are less sensitive to other parameters in calculations, and their measurements in the ALICE experiment at the LHC will make it possible to restrict the variety of neutron density parameterizations existing for $$^{208}$$ Pb.
Citations by journals
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1
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Physics of Atomic Nuclei
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Physics of Atomic Nuclei
1 publication, 33.33%
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Physics
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Physics
1 publication, 33.33%
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Nuclear Science and Techniques/Hewuli
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Nuclear Science and Techniques/Hewuli
1 publication, 33.33%
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1
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Citations by publishers
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1
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Pleiades Publishing
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Pleiades Publishing
1 publication, 33.33%
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American Physical Society (APS)
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American Physical Society (APS)
1 publication, 33.33%
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Springer Nature
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Springer Nature
1 publication, 33.33%
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1
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Kozyrev N. et al. Peeling away neutron skin in ultracentral collisions of relativistic nuclei // European Physical Journal A. 2022. Vol. 58. No. 9. 184
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Kozyrev N., Svetlichnyi A., Nepeivoda R., Pshenichnov I. Peeling away neutron skin in ultracentral collisions of relativistic nuclei // European Physical Journal A. 2022. Vol. 58. No. 9. 184
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TY - JOUR
DO - 10.1140/epja/s10050-022-00832-5
UR - https://doi.org/10.1140%2Fepja%2Fs10050-022-00832-5
TI - Peeling away neutron skin in ultracentral collisions of relativistic nuclei
T2 - European Physical Journal A
AU - Kozyrev, Nikita
AU - Svetlichnyi, Aleksandr
AU - Nepeivoda, Roman
AU - Pshenichnov, Igor
PY - 2022
DA - 2022/09/22 00:00:00
PB - Springer Nature
IS - 9
VL - 58
SN - 1434-6001
SN - 1434-601X
ER -
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@article{2022_Kozyrev,
author = {Nikita Kozyrev and Aleksandr Svetlichnyi and Roman Nepeivoda and Igor Pshenichnov},
title = {Peeling away neutron skin in ultracentral collisions of relativistic nuclei},
journal = {European Physical Journal A},
year = {2022},
volume = {58},
publisher = {Springer Nature},
month = {sep},
url = {https://doi.org/10.1140%2Fepja%2Fs10050-022-00832-5},
number = {9},
doi = {10.1140/epja/s10050-022-00832-5}
}