https://doi.org/10.1140/epjc/s10052-009-1182-0
Regular Article - Theoretical Physics
QCD sum rule for nucleon in nuclear matter
1
Theory Division, Saha Institute of Nuclear Physics, 1/AF Bidhannagar, Kolkata, 700064, India
2
Variable Energy Cyclotron Centre, 1/AF, Bidhannagar, Kolkata, 700064, India
* e-mail: mallik@theory.saha.ernet.in
Received:
7
May
2009
Revised:
30
September
2009
Published online:
3
November
2009
We consider the two-point function of nucleon current in nuclear matter and write a QCD sum rule to analyse the residue of the nucleon pole as a function of nuclear density. The nucleon self-energy needed for the sum rule is taken as input from calculations using phenomenological N N potential. Our result shows a decrease in the residue with increasing nuclear density, as is known to be the case with similar quantities.
PACS: 25.75.Nq – / 21.65.-f – / 11.10.Wx – / 11.55.Hx –
© Springer-Verlag , 2010
