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- Title
Search for Pentaquark Θ in Hadronic Reaction at J-PARC.
- Authors
Naruki, M.; Adachi, S.; Agnello, M.; Ajimura, S.; Aoki, K.; Bang, H.; Bassalleck, B.; Botta, E.; Bufalino, S.; Ekawa, H.; Evtoukhovitch, P.; Feliciello, A.; Fujioka, H.; Hayakawa, S.; Hiruma, F.; Honda, R.; Hosomi, K.; Ichikawa, Y.; Ieiri, M.; Igarashi, Y.
- Abstract
The first experiment at the J-PARC hadron facility, the J-PARC E19 experiment, aims at searching for the Θ pentaquark in the hadronic reaction π p → K X using the missing-mass technique. Based on a superconducting magnet excited at 2.5 T, the spectrometer achieved the high mass resolution of 1.4 MeV/c for the Θ production process. The first data taking was performed in the autumn of 2010. No significant structure was observed in the missing-mass spectrum. The upper limit obtained for the differential cross section is 0.26 μb/sr in the laboratory frame at a 90 % CL.
- Subjects
PENTAQUARK; NUCLEAR reactions; PHYSICS experiments; HADRON facilities; MISSING mass problem (Astronomy); SUPERCONDUCTING magnets; DIFFERENTIAL cross sections
- Publication
Few-Body Systems, 2013, Vol 54, Issue 7-10, p955
- ISSN
0177-7963
- Publication type
Article
- DOI
10.1007/s00601-013-0685-2