Quasifree Photoproduction of {eta} Mesons off the Neutron

Journal Article · Fri Jun 27 04:00:00 EDT 2008 · Physical Review Letters

DOI:https://doi.org/10.1103/PHYSREVLETT.100.252002· OSTI ID:21134070

Jaegle, I; Mertens, T; Krusche, B ^[1]; Anisovich, A V; Bayadilov, D; Nikonov, V A; Novinski, D; Sarantsev, A V ^[2]; Bacelar, J C. S.; Castelijns, R; Loehner, H; Messchendorp, J G; Shende, S V ^[3]; Bantes, B; Dutz, H; Elsner, D; Ewald, R; Gothe, R; Hoeffgen, S; Kammer, S ^[4]

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1. Department Physik, Universitaet Basel (Switzerland)
2. Helmholtz-Institut fuer Strahlen- u. Kernphysik, Universitaet Bonn (Germany)
3. KVI, Groningen (Netherlands)
4. Physikalisches Institut, Universitaet Bonn (Germany)

Quasifree photoproduction of {eta} mesons off nucleons bound in the deuteron has been measured with the CBELSA/TAPS detector for incident photon energies up to 2.5 GeV at the Bonn ELSA accelerator. The {eta} mesons have been detected in coincidence with recoil protons and recoil neutrons, which allows a detailed comparison of the quasifree n({gamma},{eta})n and p({gamma},{eta})p reactions. The excitation function for {eta} production off the neutron shows a pronounced bumplike structure at W=1.68 GeV (E{sub {gamma}}{approx_equal}1 GeV), which is absent for the proton.

• OSTI ID: 21134070
• Journal Information: Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 25 Vol. 100; ISSN 0031-9007; ISSN PRLTAO
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ACCELERATORS
DEUTERONS
ETA MESONS
EXCITATION FUNCTIONS
GEV RANGE 01-10
NEUTRONS
PHOTONS
PHOTOPRODUCTION
PROTONS