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Title: Total cross section of the [ital pp][r arrow][ital pp][eta] reaction near threshold

Abstract

The [ital pp][r arrow][ital pp][eta] reaction is studied at energies near the [eta] production threshold. The total cross sections at nominal machine energies of 1260, 1265, and 1300 MeV are 90[plus minus]15, 790[plus minus]120, and 3460[plus minus]690 nb, respectively. None of the existing perturbative model calculations reproduces the energy dependence, which deviates strongly from phase space. This suggests that the cross section is enhanced in the near vicinity of the production threshold by a large [eta]-[ital pp] scattering length.

Authors:
; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ;  [1]
  1. Centre de Recherches Nucleaires, Universite Louis Pasteur, B.P. 20, Institut National de Physique Nucleaire et de Physique des Particules-Centre National de la Recherche Scientifique, F-67037 Strasbourg CEDEX (France) Department of Physics, Ben Gurion University, 84105 Beer Sheva (Israel) Institut de Physique Nucleaire, F-91406 Orsay CEDEX (France) Laboratoire National Saturne, Centre d'Etudes Nucleaires de Saclay, F-91191 Gif-sur-Yvette (France) Department of Physics, University of California at Los Angeles, Los Angeles, California 90024 (United States)
Publication Date:
OSTI Identifier:
6025882
Resource Type:
Journal Article
Journal Name:
Physical Review, D (Particles Fields); (United States)
Additional Journal Information:
Journal Volume: 48:7; Journal ID: ISSN 0556-2821
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; 73 NUCLEAR PHYSICS AND RADIATION PHYSICS; PROTON-PROTON INTERACTIONS; TOTAL CROSS SECTIONS; ENERGY DEPENDENCE; ETA MESONS; PHASE SPACE; PROTON REACTIONS; SCATTERING LENGTHS; THRESHOLD ENERGY; BARYON REACTIONS; BARYON-BARYON INTERACTIONS; BOSONS; CHARGED-PARTICLE REACTIONS; CROSS SECTIONS; DIMENSIONS; ELEMENTARY PARTICLES; ENERGY; HADRON REACTIONS; HADRON-HADRON INTERACTIONS; HADRONS; INTERACTIONS; LENGTH; MATHEMATICAL SPACE; MESONS; NUCLEAR REACTIONS; NUCLEON REACTIONS; NUCLEON-NUCLEON INTERACTIONS; PARTICLE INTERACTIONS; PROTON-NUCLEON INTERACTIONS; PSEUDOSCALAR MESONS; SPACE; 662340* - Hadron Interactions- (1992-); 662420 - Properties of Mesons & Meson Resonances- (1992-); 663430 - Nucleon-Induced Reactions & Scattering- (1992-)

Citation Formats

Bergdolt, A M, Bergdolt, G, Bing, O, Bouchakour, A, Brochard, F, Hibou, F, Moalem, A, Taleb, A, Combes-Comets, M P, Courtat, P, Gacougnolle, R, Le Bornec, Y, Loireleux, E, Reide, F, Tatischeff, B, Willis, N, Boivin, M, Nefkens, B M.K., and Plouin, F. Total cross section of the [ital pp][r arrow][ital pp][eta] reaction near threshold. United States: N. p., 1993. Web. doi:10.1103/PhysRevD.48.R2969.
Bergdolt, A M, Bergdolt, G, Bing, O, Bouchakour, A, Brochard, F, Hibou, F, Moalem, A, Taleb, A, Combes-Comets, M P, Courtat, P, Gacougnolle, R, Le Bornec, Y, Loireleux, E, Reide, F, Tatischeff, B, Willis, N, Boivin, M, Nefkens, B M.K., & Plouin, F. Total cross section of the [ital pp][r arrow][ital pp][eta] reaction near threshold. United States. https://doi.org/10.1103/PhysRevD.48.R2969
Bergdolt, A M, Bergdolt, G, Bing, O, Bouchakour, A, Brochard, F, Hibou, F, Moalem, A, Taleb, A, Combes-Comets, M P, Courtat, P, Gacougnolle, R, Le Bornec, Y, Loireleux, E, Reide, F, Tatischeff, B, Willis, N, Boivin, M, Nefkens, B M.K., and Plouin, F. 1993. "Total cross section of the [ital pp][r arrow][ital pp][eta] reaction near threshold". United States. https://doi.org/10.1103/PhysRevD.48.R2969.
@article{osti_6025882,
title = {Total cross section of the [ital pp][r arrow][ital pp][eta] reaction near threshold},
author = {Bergdolt, A M and Bergdolt, G and Bing, O and Bouchakour, A and Brochard, F and Hibou, F and Moalem, A and Taleb, A and Combes-Comets, M P and Courtat, P and Gacougnolle, R and Le Bornec, Y and Loireleux, E and Reide, F and Tatischeff, B and Willis, N and Boivin, M and Nefkens, B M.K. and Plouin, F},
abstractNote = {The [ital pp][r arrow][ital pp][eta] reaction is studied at energies near the [eta] production threshold. The total cross sections at nominal machine energies of 1260, 1265, and 1300 MeV are 90[plus minus]15, 790[plus minus]120, and 3460[plus minus]690 nb, respectively. None of the existing perturbative model calculations reproduces the energy dependence, which deviates strongly from phase space. This suggests that the cross section is enhanced in the near vicinity of the production threshold by a large [eta]-[ital pp] scattering length.},
doi = {10.1103/PhysRevD.48.R2969},
url = {https://www.osti.gov/biblio/6025882}, journal = {Physical Review, D (Particles Fields); (United States)},
issn = {0556-2821},
number = ,
volume = 48:7,
place = {United States},
year = {Fri Oct 01 00:00:00 EDT 1993},
month = {Fri Oct 01 00:00:00 EDT 1993}
}