Published March 29, 2007 | Version v1
Journal article Metadata-only

Evidence for a narrow structure at W∼1.68 GeV in η photoproduction off the neutron

Creators

  • 1. Kyungpook National University, 1370 Sankyuk-dong, Puk-ku, Daegu (Korea, Republic of) and Institute for Nuclear Research, 117312 Moscow (Russian Federation) and INFN Laboratori Nazionali del Sud and Universita di Catania, 95123 Catania (Italy)
  • 2. Institute for Nuclear Research, 117312 Moscow (Russian Federation)
  • 3. Dipartimento di Fisica Sperimentale, Universita di Torino and INFN Sezione di Torino, 10125 Torino (Italy)
  • 4. INFN Sezione Sanita and Istituto Superiore di Sanita, 00161 Rome (Italy)
  • 5. Kyungpook National University, 1370 Sankyuk-dong, Puk-ku, Daegu (Korea, Republic of)

Description

New results on quasi-free η photoproduction on the neutron and proton bound in a deuteron target are presented. The γn->ηn quasi-free cross section reveals a bump-like structure which is not seen in the cross section on the proton. This structure may signal the existence of a relatively narrow (M∼1.68 GeV, Γ=<30 MeV) baryon state

Additional details

Identifiers

DOI
10.1016/j.physletb.2007.01.041;
arXiv
arXiv:hep-ex/0606065v2;
PII
S0370-2693(07)00097-4;

Publishing Information

Journal Title
Physics Letters. Section B
Journal Volume
647
Journal Issue
1
Journal Page Range
p. 23-29
ISSN
0370-2693
CODEN
PYLBAJ

INIS

Country of Publication
Netherlands
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
39018574
Subject category
S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS;
Descriptors DEI
CROSS SECTIONS; DEUTERIUM TARGET; ETA MESONS; GEV RANGE 01-10; MEV RANGE 10-100; NEUTRONS; PHOTOPRODUCTION; PROTONS; SIGNALS
Descriptors DEC
BARYONS; BASIC INTERACTIONS; BOSONS; ELECTROMAGNETIC INTERACTIONS; ELEMENTARY PARTICLES; ENERGY RANGE; FERMIONS; GEV RANGE; HADRONS; INTERACTIONS; MESONS; MEV RANGE; NUCLEONS; PARTICLE INTERACTIONS; PARTICLE PRODUCTION; PSEUDOSCALAR MESONS; TARGETS

Optional Information

Copyright
Copyright (c) 2007 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.