NONSTANDARD GAMMA-GAMMA-]L+L- PROCESSES IN RELATIVISTIC HEAVY-ION COLLISIONS

被引：10

作者：

ALMEIDA, LD ^{[1
]}

NATALE, AA ^{[1
]}

NOVAES, SF ^{[1
]}

EBOLI, OJP ^{[1
]}

机构：

[1] UNIV SAO PAULO,INST FIS,SAO PAULO,BRAZIL

来源：

PHYSICAL REVIEW D | 1991年 / 44卷 / 01期

关键词：

D O I：

10.1103/PhysRevD.44.118

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We study lepton pair production in heavy-ion collisions with emphasis on nonstandard contributions to the QED subprocess gamma-gamma --> l+l-. The existence of compositeness of fermions and/or bosons can be tested in this reaction up to the TeV mass scale. We show that for some processes the capabilities of relativistic heavy-ion colliders to disclose new physics surpass the possibilities of e+e- or ppBAR machines. In particular, spin-zero composite particles which couple predominantly to two photons, predicted in composite models, can be studied in a broad range of masses.

引用

页码：118 / 126

页数：9

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