In-medium spectral functions of charmonia studied by (p)over-bar+A reactions

被引：22
|
作者：
Golubeva, YS
Bratkovskaya, EL
Cassing, W
Kondratyuk, LA
机构：
[1] Russian Acad Sci, Inst Nucl Res, Moscow 117312, Russia
[2] Goethe Univ Frankfurt, Inst Theoret Phys, D-60054 Frankfurt, Germany
[3] Univ Giessen, Inst Theoret Phys, D-35392 Giessen, Germany
[4] Inst Theoret & Expt Phys, Moscow 117259, Russia
来源：
EUROPEAN PHYSICAL JOURNAL A | 2003年 / 17卷 / 02期
关键词：
D O I：
10.1140/epja/i2002-10151-4
中图分类号：
O57 [原子核物理学、高能物理学];
学科分类号：
070202 ;
摘要：
We study the perspectives of resonant charmonium production in (p) over bar + A reactions within the Multiple Scattering Monte Carlo (MSMC) approach. IvVe calculate the production of the resonances Psi(2S) and Psi(3770) on various nuclei, their propagation and decay to-dileptons and D + (D) over bar in the medium and vacuum, respectively, employing pararnetrizations for the D, (D) over bar self-energies taken from QCD sum rule studies. The elastic and inelastic interactions of the charmonia and open-charm mesons in the medium are taken into account, too. It is found that the D, (D) over bar invariant-mass spectra from light and heavy nuclei are not sufficiently sensitive to the in-medium properties of the Psi(2S) and Psi(3770). However, a "suppression" of-low-mass dileptons from the Psi(3770) might be seen experimentally as well as a small broadening of the Psi(2S) dilepton spectra.
引用
收藏
页码：275 / 284
页数：10
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