skip to main content
DOE PAGES title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Increasing Cross Sections, Diffractive Excitation, and the Triple-Pomeron Coupling

Abstract

Using model-independent sum rules, it is argued that the sharp peak near the kinematical boundary observed in some inclusive spectra and the increase of total cross sections are due to the same mechanism. Both phenomena are quantitatively described in proton-proton scattering, in terms of diffractive excitation into high-mass states with a triple-Pomeron coupling. This coupling is then incorporated in a two-component model. In this way we obtain a total inelastic proton-proton cross section which agrees with the data from s = 30 to 3000 GeV 2. The "break" in the elastic differential cross section at small |t| is related to the increase with energy of the inelastic cross section. Predictions, based on the factorizability of the Pomeron, are given for the inclusive spectra, inelastic and elastic cross sections, at Serpukhov and National Accelerator Laboratory energies, for K +p and other reactions. It is shown that a Pomeron with intercept slightly below unity can actually give rise to an increasing cross section and also that a perturbative approach to the Pomeron coupling with only the first few terms may be sufficient at and even far beyond CERN Intersecting Storage Rings energies, while the "true" asymptotic behavior appears only much later.

Authors:
 [1];  [2]
  1. Stanford Univ., Stanford, CA (United States); Lab de Physique Theorique et Particules Elementaries, Orsay (France)
  2. Stanford Univ., Stanford, CA (United States)
Publication Date:
Research Org.:
SLAC National Accelerator Lab., Menlo Park, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
1442859
Report Number(s):
SLAC-PUB-1252
Journal ID: ISSN 0556-2821; PRVDAQ; TRN: US1900941
Grant/Contract Number:  
AC02-76SF00515
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review. D, Particles Fields
Additional Journal Information:
Journal Volume: 8; Journal Issue: 7; Journal ID: ISSN 0556-2821
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS

Citation Formats

Capella, A., and Chen, Min -Shih. Increasing Cross Sections, Diffractive Excitation, and the Triple-Pomeron Coupling. United States: N. p., 1973. Web. doi:10.1103/PhysRevD.8.2097.
Capella, A., & Chen, Min -Shih. Increasing Cross Sections, Diffractive Excitation, and the Triple-Pomeron Coupling. United States. doi:10.1103/PhysRevD.8.2097.
Capella, A., and Chen, Min -Shih. Mon . "Increasing Cross Sections, Diffractive Excitation, and the Triple-Pomeron Coupling". United States. doi:10.1103/PhysRevD.8.2097. https://www.osti.gov/servlets/purl/1442859.
@article{osti_1442859,
title = {Increasing Cross Sections, Diffractive Excitation, and the Triple-Pomeron Coupling},
author = {Capella, A. and Chen, Min -Shih},
abstractNote = {Using model-independent sum rules, it is argued that the sharp peak near the kinematical boundary observed in some inclusive spectra and the increase of total cross sections are due to the same mechanism. Both phenomena are quantitatively described in proton-proton scattering, in terms of diffractive excitation into high-mass states with a triple-Pomeron coupling. This coupling is then incorporated in a two-component model. In this way we obtain a total inelastic proton-proton cross section which agrees with the data from s = 30 to 3000 GeV2. The "break" in the elastic differential cross section at small |t| is related to the increase with energy of the inelastic cross section. Predictions, based on the factorizability of the Pomeron, are given for the inclusive spectra, inelastic and elastic cross sections, at Serpukhov and National Accelerator Laboratory energies, for K+p and other reactions. It is shown that a Pomeron with intercept slightly below unity can actually give rise to an increasing cross section and also that a perturbative approach to the Pomeron coupling with only the first few terms may be sufficient at and even far beyond CERN Intersecting Storage Rings energies, while the "true" asymptotic behavior appears only much later.},
doi = {10.1103/PhysRevD.8.2097},
journal = {Physical Review. D, Particles Fields},
number = 7,
volume = 8,
place = {United States},
year = {1973},
month = {10}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record

Save / Share: