Record number :
911237
Title of article :
Pions in isospin asymmetric matter and nuclear Drell-Yan scattering
Author/Authors :
C.L Korpa، نويسنده , , A.E.L. Dieperink، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 1999
Pages :
7
From page :
15
To page :
21
Abstract :
Using a self-consistent delta-hole model the pion propagation in isospin asymmetric nuclear matter is studied. In neutron-rich matter, corresponding to heavy nuclei, a significant difference in positive and negative pion light-cone distributions is obtained leading to a nuclear enhancement of up antiquark distribution compared to the down antiquark one. This means that the sea-quark asymmetry in the free nucleon cannot be extracted model independently from an experiment on a neutron-rich nucleus.
Keywords :
Drell-Yan scattering , Isospin-asymmetric medium , Antiquark flavour asymmetry
Journal title :
PHYSICS LETTERS B
Serial Year :
1999
Link To Document :
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