Matter induced charge symmetry breaking and pion form factor in nuclear medium

Details Matter induced charge symmetry breaking and pion form factor in nuclear medium Matter induced charge symmetry breaking and pion form factor in nuclear medium

2006-11-16

arxiv.org/abs/nucl-th/0611058v2

J.Phys.G35:065106,2008

Physics

Nuclear Physics

Nuclear Theory

Final Version to appear in Jour. Phys. G

Scientific paper

10.1088/0954-3899/35/6/065106

Medium modification of pion form factor has been evaluated in asymmetric nuclear matter. It is shown that both the shape and the pole position of the pion form factor in dense asymmetric nuclear matter is different from its vacuum counterpart with $\rho$-$\omega$ mixing. This is due to the density and asymmetry dependent $\rho$-$\omega$ mixing which could even dominate over its vacuum counterpart in matter. Effect of the in-medium pion factor on experimental observables {\it e.g.}, invariant mass distribution of lepton pairs has been demonstrated.

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