$ρ$-mass Modification in $He^3$ - a Signal of Restoration of Chiral Symmetry or Test for Nuclear Matter Models ?

Details $ρ$-mass Modification in $He^3$ - a Signal of Restoration of Chiral Symmetry or Test for Nuclear Matter Models ? $ρ$-mass Modification in $He^3$ - a Signal of Restoration of Chiral Symmetry or Test for Nuclear Matter Models ?

1999-02-23

arxiv.org/abs/nucl-th/9902060v1

Phys.Rev. C60 (1999) 018202

Physics

Nuclear Physics

Nuclear Theory

ReVTeX file with 2 postscript figures included

Scientific paper

10.1103/PhysRevC.60.018202

Two recent experiments have demonstrated that the effective $\rho$-mass in nuclear medium, as extracted from the $^3He(\gamma, \pi^+ \pi^-)$ reaction, is substantially reduced. This has been advocated as an indication of partial restoration of chiral symmetry in nuclear matter. We show that even in the absence of chiral symmetry, effective mean field nuclear matter models can explain these findings quantitatively.

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