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Title: Rapidity gap survival in central exclusive diffraction: Dynamical mechanisms and uncertainties

Abstract

We summarize our understanding of the dynamical mechanisms governing rapidity gap survival in central exclusive diffraction, pp -> p + H + p (H = high-mass system), and discuss the uncertainties in present estimates of the survival probability. The main suppression of diffractive scattering is due to inelastic soft spectator interactions at small pp impact parameters and can be described in a mean-field approximation (independent hard and soft interactions). Moderate extra suppression results from fluctuations of the partonic configurations of the colliding protons. At LHC energies absorptive interactions of hard spectator partons associated with the gg -> H process reach the black-disk regime and cause substantial additional suppression, pushing the survival probability below 0.01.

Authors:
;
Publication Date:
Research Org.:
Thomas Jefferson Lab National Accelerator Facility
Sponsoring Org.:
USDOE
OSTI Identifier:
956251
Report Number(s):
JLAB-THY-08-919; arXiv:0812.1053; DOE/OR/23177-0562
TRN: US1004966
DOE Contract Number:  
AC05-060R23177
Resource Type:
Conference
Resource Relation:
Conference: Paper compiled for HERA and the LHC (CERN-DESY Workshop)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; APPROXIMATIONS; DIFFRACTION; FLUCTUATIONS; IMPACT PARAMETER; PARTICLE RAPIDITY; PROBABILITY; PROTONS; SCATTERING

Citation Formats

Strikman, Mark, and Weiss, Christian. Rapidity gap survival in central exclusive diffraction: Dynamical mechanisms and uncertainties. United States: N. p., 2009. Web.
Strikman, Mark, & Weiss, Christian. Rapidity gap survival in central exclusive diffraction: Dynamical mechanisms and uncertainties. United States.
Strikman, Mark, and Weiss, Christian. Thu . "Rapidity gap survival in central exclusive diffraction: Dynamical mechanisms and uncertainties". United States. https://www.osti.gov/servlets/purl/956251.
@article{osti_956251,
title = {Rapidity gap survival in central exclusive diffraction: Dynamical mechanisms and uncertainties},
author = {Strikman, Mark and Weiss, Christian},
abstractNote = {We summarize our understanding of the dynamical mechanisms governing rapidity gap survival in central exclusive diffraction, pp -> p + H + p (H = high-mass system), and discuss the uncertainties in present estimates of the survival probability. The main suppression of diffractive scattering is due to inelastic soft spectator interactions at small pp impact parameters and can be described in a mean-field approximation (independent hard and soft interactions). Moderate extra suppression results from fluctuations of the partonic configurations of the colliding protons. At LHC energies absorptive interactions of hard spectator partons associated with the gg -> H process reach the black-disk regime and cause substantial additional suppression, pushing the survival probability below 0.01.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2009},
month = {1}
}

Conference:
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