Two-photon production in pp and pp‾ collisions

Jayaraman, T. ; Rajasekaran, G. ; Rindani, S. D. (1986) Two-photon production in pp and pp‾ collisions Physical Review D, 33 (3). 672–675. ISSN 0556-2821

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We show that the process pp (pp‾)→γ+γ+X is a powerful test to distinguish between gauged integer-charged-quark models (ICQM's) and fractionally-charged-quark models (FCQM's). We study the ratio of the two-photon production cross section to the lepton-pair production cross section. Below color threshold the ICQM value for this ratio ranges from 30 to 130 in pp collisions (and 10-35 in pp‾ collisions) in the kinematic range of the CERN ISR experiment, whereas the FCQM value is 1.6. The single experimental result available so far appears to disfavor the ICQM.

Item Type:Article
Source:Copyright of this article belongs to The American Physical Society.
ID Code:41124
Deposited On:26 May 2011 13:03
Last Modified:05 Jun 2011 05:26

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