Asymmetry of the dielectron emission rate in an isospin-asymmetric pion medium
Abstract
The dielectron emission by pion annihilation in an isospin-asymmetric pion gas at finite temperature is considered. Due to the difference between the longitudinal and transverse parts of the in-medium ϱ meson self-energy a specific asymmetry of the rates is caused for electron pairs with relative momenta perpendicular or parallel to the total pair momentum. This asymmetry may be considered as a sensitive signal of in-medium modifications of the ϱ properties.
- Publication:
-
Physics Letters B
- Pub Date:
- February 1996
- DOI:
- 10.1016/0370-2693(96)00044-5
- Bibcode:
- 1996PhLB..372..187G
- Keywords:
-
- PACS;
- 25.75.+R;
- 12.90.+B;
- DI-ELECTRON EMISSION RATE (ASYMMETRY);
- RHO MESON SELF-ENERGY;
- PION GAS (ISOSPIN-ASYMMETRIC);
- POLARIZATION OF LEPTON PAIRS