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Constraining the symmetry energy with heavy-ion collisions and Bayesian analyses

Morfouace, P. ; Tsang, C.Y. ; Zhang, Y. ; Lynch, W.G. ; Tsang, M.B. ; Coupland, D.D.S. ; Youngs, M. ; Chajecki, Z. ; Famiano, M.A. ; Ghosh, T.K. ; Jhang, G. ; Lee, Jenny ; Liu, H. ; Sanetullaev, A. ; Showalter, R. ; Winkelbauer, J.

Physics letters. B, 2019-12, Vol.799 (C), p.135045, Article 135045 [Periódico revisado por pares]

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Título:
Constraining the symmetry energy with heavy-ion collisions and Bayesian analyses
Autor: Morfouace, P. ; Tsang, C.Y. ; Zhang, Y. ; Lynch, W.G. ; Tsang, M.B. ; Coupland, D.D.S. ; Youngs, M. ; Chajecki, Z. ; Famiano, M.A. ; Ghosh, T.K. ; Jhang, G. ; Lee, Jenny ; Liu, H. ; Sanetullaev, A. ; Showalter, R. ; Winkelbauer, J.
Assuntos: Atomic, Nuclear and Particle Physics ; Bayesian analysis ; Heavy-ion collisions ; PHYSICS OF ELEMENTARY PARTICLES AND FIELDS ; Symmetry energy
É parte de: Physics letters. B, 2019-12, Vol.799 (C), p.135045, Article 135045
Notas: USDOE
89233218CNA000001
LA-UR-19-31567
Descrição: Efficiency corrected single ratios of neutron and proton spectra in central Sn112+112Sn and Sn124+124Sn collisions at 120 MeV/u are combined with double ratios to provide constraints on the density and momentum dependencies of the isovector mean-field potential. Bayesian analyses of these data reveal that the isoscalar and isovector nucleon effective masses, ms⁎−mv⁎ are strongly correlated. The linear correlation observed in ms⁎−mv⁎ yields a nearly independent constraint on the effective mass splitting Δmnp⁎=(mn⁎−mp⁎)/mN=−0.05−0.09+0.09δ. The correlated constraint on the standard symmetry energy, S0 and the slope, L at saturation density yields the values of symmetry energy S(ρs)=16.8−1.2+1.2 MeV at a sensitive density of ρs/ρ0=0.43−0.05+0.05.
Editor: United States: Elsevier B.V
Idioma: Inglês

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