Skip to main content

Lund University Publications

LUND UNIVERSITY LIBRARIES

Hadronic diffractive cross sections and the rise of the total cross section

Schuler, Gerhard A. and Sjöstrand, Torbjörn LU orcid (1994) In Physical Review D 49(5). p.2257-2267
Abstract

A model for high-energy hadronic cross sections is proposed. It is based on Regge theory and perturbative QCD, and includes soft and hard mechanisms as well as diffractive processes. The validity range of Regge-pole theory in the description of total, elastic, single-, and double-diffractive cross sections is investigated and inconsistencies found already at CERN LHC and/or SSC energies. Examining unitarity constraints, modifications of the cross section formulas are proposed which allow a continued use of formulas in the Regge spirit to describe elastic and diffractive events. The nondiffractive cross section is allowed to rise at a rate consistent with unitarization of multiple parton-parton scatterings. However, in our picture, the... (More)

A model for high-energy hadronic cross sections is proposed. It is based on Regge theory and perturbative QCD, and includes soft and hard mechanisms as well as diffractive processes. The validity range of Regge-pole theory in the description of total, elastic, single-, and double-diffractive cross sections is investigated and inconsistencies found already at CERN LHC and/or SSC energies. Examining unitarity constraints, modifications of the cross section formulas are proposed which allow a continued use of formulas in the Regge spirit to describe elastic and diffractive events. The nondiffractive cross section is allowed to rise at a rate consistent with unitarization of multiple parton-parton scatterings. However, in our picture, the rise of the total cross section with increasing energy is only partly due to the minijet cross sections; the diffractive topologies rise as well. Fully differential distributions are given and convenient parametrizations derived for the integrated rates of elastic and diffractive events. Predictions for the various partial cross sections at Fermilab Tevatron, LHC, and SSC energies are given and compared to other estimates.

(Less)
Please use this url to cite or link to this publication:
author
and
publishing date
type
Contribution to journal
publication status
published
subject
in
Physical Review D
volume
49
issue
5
pages
11 pages
publisher
American Physical Society
external identifiers
  • scopus:0001527103
ISSN
0556-2821
DOI
10.1103/PhysRevD.49.2257
language
English
LU publication?
no
id
e0d279cc-dd72-4d1a-9f1f-30ed4b863d2d
date added to LUP
2019-05-02 22:00:32
date last changed
2021-08-01 04:23:54
@article{e0d279cc-dd72-4d1a-9f1f-30ed4b863d2d,
  abstract     = {{<p>A model for high-energy hadronic cross sections is proposed. It is based on Regge theory and perturbative QCD, and includes soft and hard mechanisms as well as diffractive processes. The validity range of Regge-pole theory in the description of total, elastic, single-, and double-diffractive cross sections is investigated and inconsistencies found already at CERN LHC and/or SSC energies. Examining unitarity constraints, modifications of the cross section formulas are proposed which allow a continued use of formulas in the Regge spirit to describe elastic and diffractive events. The nondiffractive cross section is allowed to rise at a rate consistent with unitarization of multiple parton-parton scatterings. However, in our picture, the rise of the total cross section with increasing energy is only partly due to the minijet cross sections; the diffractive topologies rise as well. Fully differential distributions are given and convenient parametrizations derived for the integrated rates of elastic and diffractive events. Predictions for the various partial cross sections at Fermilab Tevatron, LHC, and SSC energies are given and compared to other estimates.</p>}},
  author       = {{Schuler, Gerhard A. and Sjöstrand, Torbjörn}},
  issn         = {{0556-2821}},
  language     = {{eng}},
  month        = {{03}},
  number       = {{5}},
  pages        = {{2257--2267}},
  publisher    = {{American Physical Society}},
  series       = {{Physical Review D}},
  title        = {{Hadronic diffractive cross sections and the rise of the total cross section}},
  url          = {{http://dx.doi.org/10.1103/PhysRevD.49.2257}},
  doi          = {{10.1103/PhysRevD.49.2257}},
  volume       = {{49}},
  year         = {{1994}},
}