Open-charm mesons in nuclear matter at finite temperature beyond the zero-range approximation

被引：25
作者：
Jimenez-Tejero, C. E. [1 ,2 ]
Ramos, A. [1 ,2 ]
Tolos, L. [3 ]
Vidana, I. [4 ]
机构：
[1] Univ Barcelona, Dept Estructura & Constituents Mat, E-08028 Barcelona, Spain
[2] Univ Barcelona, Inst Ciencies Cosmos, E-08028 Barcelona, Spain
[3] Campus Univ Autonoma Barcelona, Inst Ciencies Espai IEEC CSIC, Fac Ciencies, E-08193 Bellaterra, Spain
[4] Univ Coimbra, Ctr Fis Computac, Dept Phys, P-3004516 Coimbra, Portugal
来源：
PHYSICAL REVIEW C | 2011年 / 84卷 / 01期
关键词：
RELATIVIZED QUARK-MODEL; CHIRAL DYNAMICS; BARYON RESONANCES; COUPLED-CHANNEL; PION-NUCLEON; HEAVY MESONS; STATES; SCATTERING; EXCHANGE;
D O I：
10.1103/PhysRevC.84.015208
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：
The properties of open charm mesons, D, <(D)over bar, D-s, and <(D)over bar>(s) in nuclear matter at finite temperature are studied within a self-consistent coupled-channel approach. The interaction of the low-lying pseudoscalar mesons with the ground-state baryons in the charm sector is derived from a t-channel vector-exchange model. The in-medium scattering amplitudes are obtained by solving the Lippmann-Schwinger equation at finite temperature including Pauli blocking effects, baryon dressing, as well as D, (D) over bar, D-s, and (D) over bar (s) self-energies taking their mutual influence into account. We find that the in-medium properties of the D meson are affected by the D-s-meson self-energy through the intermediate DsY loops coupled to DN states. Similarly, dressing the (D) over bar meson in the (D) over barY loops has an influence over the properties of the (D) over bar (s) meson.
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页数：12
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