热强子物质双轻子产生的抑制

IF 3.2 2区物理与天体物理 Q2 PHYSICS, NUCLEAR

Physical Review C Pub Date : 1994-12-16 DOI:10.1103/PhysRevC.52.476

Chung-sik Song, Su Houng Lee, C. Ko

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引用次数: 3

摘要

利用包含显式矢量介子的有效手性拉格朗日量研究了热强子物质中介子湮灭的双轻子产生。我们发现在有限温度下，π介子电磁形状因子的改变抑制了在{rho}-介子共振周围具有不变质量的双轻子的产生速率。讨论了这一现象与热强子物质手性对称性部分恢复的关系。

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Suppression of dilepton production in hot hadronic matter

Dilepton production from pion-pion annihilation in a hot hadronic matter is studied using an effective chiral Lagrangian that includes explicitly vector mesons. We find that the production rate for dileptons with invariant masses around the {rho}-meson resonance is suppressed as a result of the modification of the pion electromagnetic form factor at finite temperature. The relevance of this phenomenon to the partial restoration of chiral symmetry in hot hadronic matter is discussed.

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来源期刊

Physical Review C PHYSICS, NUCLEAR-

CiteScore

5.80

自引率

35.50%

发文量

863

期刊介绍： Physical Review C (PRC) is a leading journal in theoretical and experimental nuclear physics, publishing more than two-thirds of the research literature in the field. PRC covers experimental and theoretical results in all aspects of nuclear physics, including: Nucleon-nucleon interaction, few-body systems Nuclear structure Nuclear reactions Relativistic nuclear collisions Hadronic physics and QCD Electroweak interaction, symmetries Nuclear astrophysics