Archivio Istituzionale della RicercaThe first experiment at the J-PARC hadron facility, the J-PARC E19 experiment, aims at searching for the I similar to (+) pentaquark in the hadronic reaction pi (-) 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(2) for the I similar to (+) 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 mu b/sr in the laboratory frame at a 90 % CL.
Search for Pentaquark I similar to (+) in Hadronic Reaction at J-PARC / Naruki, M.; Adachi, S.; Agnello, Michelangelo; Ajimura, S.; Aoki, K.; Bang, H.; Bassalleck, B.; Botta, E.; Bufalino, Stefania; Chiga, N.; Ekawa, H.; Evtoukhovitch, P.; Feliciello, A.; Fujioka, H.; Hayakawa, S.. - In: FEW-BODY SYSTEMS. - ISSN 0177-7963. - STAMPA. - 54:7-10(2013), pp. 955-960. [10.1007/s00601-013-0685-2]
Search for Pentaquark I similar to (+) in Hadronic Reaction at J-PARC
AGNELLO, MICHELANGELO;BUFALINO, STEFANIA;
2013
Abstract
The first experiment at the J-PARC hadron facility, the J-PARC E19 experiment, aims at searching for the I similar to (+) pentaquark in the hadronic reaction pi (-) 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(2) for the I similar to (+) 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 mu b/sr in the laboratory frame at a 90 % CL.
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https://hdl.handle.net/11583/2543383
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