NONSTANDARD GAMMA-GAMMA-]L+L- PROCESSES IN RELATIVISTIC HEAVY-ION COLLISIONS
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Data
1991-07-01
Autores
Almeida, L. D.
Natale, A. A.
Novaes, Sérgio Ferraz [UNESP]
Eboli, OJP
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American Physical Soc
Resumo
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.
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Physical Review D. College Pk: American Physical Soc, v. 44, n. 1, p. 118-126, 1991.