The extraction of the bare triple-Pomeron vertex; a crucial ingredient for diffraction
| dc.creator | Khoze, V. A. | |
| dc.creator | Martin, A. D. | |
| dc.creator | Ryskin, M. G. | |
| dc.date | 2006-09-29 | |
| dc.date.accessioned | 2026-07-07T11:05:49Z | |
| dc.date.available | 2026-07-07T11:05:49Z | |
| dc.description | The triple-Pomeron coupling lies at the heart of the predictions for high energy diffractive processes. We explain why the existing determinations, which use single-particle inclusive hadronic data a+b -> a+Y, underestimate the value of the bare coupling, due to the neglect of soft rescattering which populates the rapidity gaps. We describe how data for the process gamma+p -> J/psi +Y can be used to give a much more reliable estimate of the bare coupling. We use the existing, fragmentary, J/psi data from HERA to show that the triple-Pomeron coupling is probably about 3 times larger than the previous determinations. We emphasize the importance of an explicit measurement of the mass spectrum of the Y system which accompanies J/psi production at HERA. The consequences for ultra high energy cosmic ray showers are mentioned. | |
| dc.description | 10 pages, 3 figures | |
| dc.identifier | https://arxiv.org/abs/hep-ph/0609312 | |
| dc.identifier | http://arxiv.org/abs/hep-ph/0609312 | |
| dc.identifier | Phys.Lett.B643:93-97,2006 | |
| dc.identifier | doi:10.1016/j.physletb.2006.10.031 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/189325 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.title | The extraction of the bare triple-Pomeron vertex; a crucial ingredient for diffraction | |
| dc.type | text |