Eur. Phys. J. C 69, 95-101 (2010)
https://doi.org/10.1140/epjc/s10052-010-1393-4

The possibility that the triple-Pomeron coupling vanishes at q _t =0

¹ Instituto de Física e Matemática, Universidade Federal de Pelotas, Caixa Postal 354, 96010-900, Pelotas, RS, Brazil
² Institute for Particle Physics Phenomenology, University of Durham, Durham, DH1 3LE, UK
³ Petersburg Nuclear Physics Institute, Gatchina, St. Petersburg, 188300, Russia

luna@ifi.unicamp.br

Received: 28 June 2010
Published online: 5 August 2010

Abstract

We study the case when the triple-Pomeron vertex is assumed to have a vectorial form, that is, the amplitude of high-mass diffractive dissociation vanishes as as q _t →0. We find that the available data in the triple-Reggeon region may be well described in such a ‘weak’ coupling scenario, providing that absorptive effects are taken into account. We compare this weak-vector coupling scenario with the strong and weak-scalar coupling scenarios. Corresponding predictions are presented for an LHC energy of 14 TeV.