Spectral Function of rho Meson in hot and Dense Pion Medium

LU Zhen-Bang; CHEN Ji-Sheng; LI Jia-Rong

Chinese Physics C> 2006, Vol. 30> Issue(3) : 224-227

Spectral Function of rho Meson in hot and Dense Pion Medium

Institute of Particle Physics, Huazhong Normal University, Wuhan 430079, China

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Abstract：
The spectral function of rho meson in hot and dense pion medium is studied within an effective model which describes the ρ-π coupling. The results from numerical calculation show that the spectral function becomes wider and the position of the peak moves towards the high invariant mass region when the temperature and the pion chemical potential increase.

References

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. Agakichiev G, Baur R, Breskin A et al. Phys. Rev. Lett,1995, 75(7): 1272—12752. Wurm P. Nucl. Phys., 1995, A590: 103c—116c3. Adams J, Adler C, Aggarwal M M et al. Phys. Rev. Lett.,2004, 92(9): 0923014. Rapp R, Wambach J. Adv. Nucl. Phys., 2000, 25: 15. Brown G E, Rho M. Phys. Rev. Lett., 1991, 66(21): 2720—27236. CHEN Ji-Sheng, LI Jia-Rong, ZHUANG Peng-Fei. JHEP,2002, 11: 0147. Ayala A, Magnin J. Phys. Rev., 2003, C68(1): 0149028. Trnka D, Anton G, Bacelar J C S et al. nucl-ex/05040109. Gale C, Kapusta J I. Nucl. Phys., 1991, B357: 6510. Bebie H, Gerber P, Goity J L et al. Nucl. Phys., 1992,B378: 9511. Braun-Munzinger P, Stachel J, Wessels J et al. Phys. Lett.,1995, B344: 4312. LI Jia-Rong. Introduction to Quark Matter Theory. Hu-nan: Hunan Education Publishing House, 1989. 11—21(in Chinese)(李家荣.夸克物质理论导论.湖南:湖南教育出版社,1989.11-21)13. Kapusta J I. Finite Temperature Field Theory. Cambridge:Cambridge University Press, 1988. 39—5314. Bellac M Le. Thermal Field Theory. Cambridge: Cam-bridge University Press, 1996. 29—47

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LU Zhen-Bang, CHEN Ji-Sheng and LI Jia-Rong. Spectral Function of rho Meson in hot and Dense Pion Medium[J]. Chinese Physics C, 2006, 30(3): 224-227.

LU Zhen-Bang, CHEN Ji-Sheng and LI Jia-Rong. Spectral Function of rho Meson in hot and Dense Pion Medium[J]. Chinese Physics C, 2006, 30(3): 224-227. shu

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Received: 2005-06-27
Revised: 2005-09-27

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沈阳化工大学材料科学与工程学院沈阳 110142

Spectral Function of rho Meson in hot and Dense Pion Medium

Corresponding author: LU Zhen-Bang,

Institute of Particle Physics, Huazhong Normal University, Wuhan 430079, China

Received Date: 2005-06-27
Accepted Date: 2005-09-27
Available Online: 2006-03-05

Abstract: The spectral function of rho meson in hot and dense pion medium is studied within an effective model which describes the ρ-π coupling. The results from numerical calculation show that the spectral function becomes wider and the position of the peak moves towards the high invariant mass region when the temperature and the pion chemical potential increase.