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Observation of Inverse Diproton Photodisintegration at Intermediate Energies

descriptionPublicationkeyboard_double_arrow_right Article , Preprint , Journal 03 Sep 2008Embargo end date: 01 Jan 2008 United Kingdom, Germany, Germany Publisher:American Physical Society (APS)Journal:Physical Review Letters, volume 101 (issn: 0031-9007, eissn: 1079-7114,

Authors: V. Serdyuk; V. Serdyuk; S. Merzliakov; S. Merzliakov; M. Nekipelov; M. Nekipelov; M. Papenbrock; +23 Authors

doi: 10.1103/physrevlett.101.102501 , 10.48550/arxiv.0806.0648

pmid: 18851211

arXiv: http://arxiv.org/abs/0806.0648 , 0806.0648

Observation of Inverse Diproton Photodisintegration at Intermediate Energies

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Abstract

The reaction pp->{pp}_s��, where {pp}_s is a proton pair with an excitation energy E_{pp}<3 MeV, has been observed with the ANKE spectrometer at COSY-Juelich for proton beam energies of T_p=0.353, 0.500, and 0.550 GeV. This is equivalent to photodisintegration of a free 1S_0 diproton for photon energies E��~ T_p/2. The differential cross sections measured for c.m. angles 0 deg.d��is on the 10^{-3}-10^{-2} level. The increase of the pp->{pp}_s��cross section with T_p might reflect the influence of the Delta(1232) excitation.

4 pages + 4 figures

Countries

United Kingdom, Germany, Germany

Related Organizations

University College London
United Kingdom
Helmholtz Association of German Research Centres
Germany
University of Münster
Germany
University of Erlangen-Nuremberg
Germany
Petersburg Nuclear Physics Institute
Russian Federation

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Keywords

energy spectrum: (2p), S-1(0) DIPROTON, 0.353: 0.500: 0.550 GeV, p p: radiative capture, FOS: Physical sciences, PHOTON-ABSORPTION, Juelich COSY PS, PROTON-PROTON BREMSSTRAHLUNG, energy dependence, PAIR, mass spectrum: missing-mass, Nuclear Experiment (nucl-ex), Nuclear Experiment, HE-3, info:eu-repo/classification/ddc/550, differential cross section: angular dependence, DEUTERON, Delta(1232), dibaryon, p p: partial wave, CROSS-SECTION, experimental results

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