Number of collisions in the Glauber model and beyond

The so-called number of hadron-nucleus collisions n{sub coll}(b) at impact parameter b and its integral value N{sub coll}, which are used to normalize the measured fractional cross section of a hard process, are calculated within the Glauber-Gribov theory, including the effects of nucleon short-rang...

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Bibliographic Details
Published in:Physical review. C, Nuclear physics Nuclear physics, 2011-08, Vol.84 (2), Article 025205
Main Authors: Ciofi degli Atti, C., Kopeliovich, B. Z., Mezzetti, C. B., Potashnikova, I. K., Schmidt, I.
Format: Article
Language:English
Subjects:
ACCELERATORS
BARYONS
BNL
BROOKHAVEN RHIC
CERN LHC
COLLISIONS
COMPUTERIZED SIMULATION
CORRECTIONS
CORRELATIONS
CROSS SECTIONS
CYCLIC ACCELERATORS
DIPOLES
ELEMENTARY PARTICLES
FERMIONS
GLAUBER THEORY
HADRONS
HEAVY ION ACCELERATORS
IMPACT PARAMETER
INCLUSIONS
MULTIPOLES
NATIONAL ORGANIZATIONS
NUCLEI
NUCLEONS
PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
SIMULATION
STORAGE RINGS
SYNCHROTRONS
US AEC
US DOE
US ERDA
US ORGANIZATIONS
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Summary:The so-called number of hadron-nucleus collisions n{sub coll}(b) at impact parameter b and its integral value N{sub coll}, which are used to normalize the measured fractional cross section of a hard process, are calculated within the Glauber-Gribov theory, including the effects of nucleon short-range correlations. The Gribov inelastic shadowing corrections are summed to all orders by employing the dipole representation. Numerical calculations are performed at the energies of the BNL Relativistic Heavy Ion Collider (RHIC) and CERN Large Hadron Collider (LHC). We found that whereas the Gribov corrections generally increase the value of N{sub coll}, the inclusion of nucleon correlations, acting in the opposite directions, decreases it by a comparable amount. The interplay of the two effects varies with the value of the impact parameter.
ISSN:0556-2813
1089-490X
DOI:10.1103/PhysRevC.84.025205