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Energy dependence of hard bremsstrahlung production in proton–proton collisions in the Δ(1232) region

descriptionPublicationkeyboard_double_arrow_right Article , Preprint , Other literature type , Journal 30 Jul 2010Embargo end date: 01 Jan 2010 Germany, Germany, France Publisher:IOP PublishingJournal:Journal of Physics G: Nuclear and Particle Physics, volume 37, page 105,005 (issn: 0954-3899, eissn: 1361-6471,

Authors: S. Merzliakov; S. Merzliakov; S. Mikirtychiants; S. Mikirtychiants; V. Serdyuk; V. Serdyuk; A. I. Kulikov; +22 Authors

doi: 10.1088/0954-3899/37/10/105005 , 10.48550/arxiv.1005.2014

arXiv: http://arxiv.org/abs/1005.2014 , 1005.2014

Energy dependence of hard bremsstrahlung production in proton–proton collisions in the Δ(1232) region

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Abstract

Hard bremsstrahlung production in proton-proton collisions has been studied with the ANKE spectrometer at COSY-Juelich in the energy range of 353-800 MeV by detecting the final proton pair {pp}_s from the pp -> {pp}_s reaction with very low excitation energy. Differential cross sections were measured at small diproton c.m. angles from 0 to 20 degrees and the average over this angular interval reveals a broad peak at a beam energy around 650 MeV with a FWHM of about 220 MeV, suggesting the influence of Delta(1232)N intermediate states. Comparison with deuteron photodisintegration shows that the cross section for diproton production is up to two orders of magnitude smaller, due largely to differences in the selection rules.

14 pages, 5 figures

Countries

Germany, Germany, France

Related Organizations

French Institute for Research in Computer Science and Automation
France
University College London
United Kingdom
University of Münster
Germany
Helmholtz Association of German Research Centres
Germany
Joint Institute for Nuclear Research
Russian Federation

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Keywords

ANKE, 13.60.-r, 25.20.Dc, Nuclear Theory, FOS: Physical sciences, differential cross section: angular dependence, Juelich COSY PS, bremsstrahlung, Delta(1232), energy dependence, p p --> 2p photon, Nuclear Theory (nucl-th), 0.353-0.800 GeV: 0-20 degrees, 25.40.Ep, Nuclear Experiment (nucl-ex), info:eu-repo/classification/ddc/530, Nuclear Experiment, p p: inelastic scattering, experimental results

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