Journal Article

PreJuSER-59365

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Neutron-proton mass difference in isospin-asymmetric nuclear matter

Meissner, U. G.FZJ* ; Rakhimov, A. M. ; Wirzba, A.FZJ* ; Yakhshiev, U. T.FZJ*

2007
Springer Berlin

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Please use a persistent id in citations: http://hdl.handle.net/2128/10517  doi:10.1140/epja/i2007-10390-9

Abstract: Isospin-breaking effects in the baryonic sector are studied in the framework of a medium-modified Skyrme model. The neutron-proton mass difference in infinite, asymmetric nuclear matter is discussed. In order to describe the influence of the nuclear environment on the skyrmions, we include energy-dependent charged and neutral pion optical potentials in the s- and p-wave channels. The present approach predicts that the neutron-proton mass difference is mainly dictated by its strong part and that it strongly decreases in neutron matter.

Keyword(s): nuclear matter ; isospin: asymmetry ; p n: mass difference ; Skyrme model ; potential: optical ; effective Lagrangian ; soliton ; form factor: electromagnetic ; numerical calculations

Note: Record converted from VDB: 12.11.2012

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Research Program(s):

1. Physik der Hadronen und Kerne (P53)

Appears in the scientific report 2007

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Database coverage:

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