The nuclear symmetry energy plays a key role in determining the equation of state (EoS) of dense, neutron-rich matter, which connects the atomic nuclei with the hot and dense matter in universe, thus has been the subject of intense investigations in laboratory experiments, astronomy observations and theories. Various probes have been proposed to constrain the symmetry energy and its density dependence. Currently, the extensive data yield already a good and consistent constraint to the symmetry energy (E-sym(rho)) at saturation density, but do not yet give a consistent result of one critical EoS parameter, L, the density dependence of the symmetry energy. In this work, we report a new probe of L at saturation density. A good linear correlation is found between L and the charge changing cross section difference (Delta sigma(cc)) of mirror nuclei Si-30-(3)(0) S for both the Skyrme-Hartree-Fock theory (SHF) and covariant (relativistic) density functionals (CDF). We found that the pairing effect for this mirror pair is essential to get a consistent correlation between L and Delta sigma(cc) in both the SHF and CDF. Here, the cross sections are calculated on the same target and at the same energy using the zero-range optical-limit Glauber model. The linearity is found to be in the same precision as those found between L and neutron skin thickness or proton radius difference. (C) 2022 The Author(s). Published by Elsevier B.V.

Constraining equation of state of nuclear matter by charge-changing cross section measurements of mirror nuclei / X. Jun-Yao, L. Zheng-Zheng, S. Bao-Hua, N. Yi-Fei, R. Xavier, S. Hiroyuki, T. Isao. - In: PHYSICS LETTERS. SECTION B. - ISSN 0370-2693. - 833:(2022), pp. 137333.1-137333.6. [10.1016/j.physletb.2022.137333]

Constraining equation of state of nuclear matter by charge-changing cross section measurements of mirror nuclei

R. Xavier
;
2022

Abstract

The nuclear symmetry energy plays a key role in determining the equation of state (EoS) of dense, neutron-rich matter, which connects the atomic nuclei with the hot and dense matter in universe, thus has been the subject of intense investigations in laboratory experiments, astronomy observations and theories. Various probes have been proposed to constrain the symmetry energy and its density dependence. Currently, the extensive data yield already a good and consistent constraint to the symmetry energy (E-sym(rho)) at saturation density, but do not yet give a consistent result of one critical EoS parameter, L, the density dependence of the symmetry energy. In this work, we report a new probe of L at saturation density. A good linear correlation is found between L and the charge changing cross section difference (Delta sigma(cc)) of mirror nuclei Si-30-(3)(0) S for both the Skyrme-Hartree-Fock theory (SHF) and covariant (relativistic) density functionals (CDF). We found that the pairing effect for this mirror pair is essential to get a consistent correlation between L and Delta sigma(cc) in both the SHF and CDF. Here, the cross sections are calculated on the same target and at the same energy using the zero-range optical-limit Glauber model. The linearity is found to be in the same precision as those found between L and neutron skin thickness or proton radius difference. (C) 2022 The Author(s). Published by Elsevier B.V.
Symmetry energy; Equation of state of nuclear matter; Charge-changing cross section; Mirror nuclei
Settore FIS/04 - Fisica Nucleare e Subnucleare
Article (author)
File in questo prodotto:
File Dimensione Formato  
1-s2.0-S0370269322004671-main.pdf

accesso aperto

Tipologia: Publisher's version/PDF
Dimensione 979.68 kB
Formato Adobe PDF
979.68 kB Adobe PDF Visualizza/Apri
Pubblicazioni consigliate

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2434/949687
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus ND
  • ???jsp.display-item.citation.isi??? 0
social impact