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

Journal Article · Fri Oct 01 00:00:00 EDT 1993 · Physical Review, D (Particles Fields); (United States)

DOI:https://doi.org/10.1103/PhysRevD.48.R2969· OSTI ID:6025882

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 ^[1]

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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)

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.

• OSTI ID: 6025882
• Journal Information: Physical Review, D (Particles Fields); (United States), Vol. 48:7; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

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-)