Archivio Istituzionale della RicercaWe have been searching for the Theta(+) pentaquark via the pi(-) p -> K- X reaction at the J-PARC hadron facility. No peak structure was observed in the missing mass spectrum obtained at 1.92 GeV/c beam momentum. The upper limit for the production cross section averaged over the scattering angle from 2 degrees to 15 degrees in the laboratory frame was derived to be 0.26 mu b/sr. In order to make a more stringent constraint we have also performed a measurement at 2.0 GeV/c. Present analysis status of this new data is reported. (C) 2013 Elsevier B.V. All rights reserved.
Search for the Theta(+) pentaquark at J-PARC / Moritsu, M.; Adachi, S.; Agnello, Michelangelo; Ajimura, S.; Aoki, K.; Bhang, H. C.; Bassalleck, B.; Botta, E.; Bufalino, Stefania; Chiga, N.; Ekawa, H.; Evtoukhovitch, P.; Feliciello, A.; Fujioka, H.; Hayakawa, S.. - In: NUCLEAR PHYSICS. A. - ISSN 0375-9474. - STAMPA. - 914:(2013), pp. 91-96. [10.1016/j.nuclphysa.2013.01.010]
Search for the Theta(+) pentaquark at J-PARC
AGNELLO, MICHELANGELO;BUFALINO, STEFANIA;
2013
Abstract
We have been searching for the Theta(+) pentaquark via the pi(-) p -> K- X reaction at the J-PARC hadron facility. No peak structure was observed in the missing mass spectrum obtained at 1.92 GeV/c beam momentum. The upper limit for the production cross section averaged over the scattering angle from 2 degrees to 15 degrees in the laboratory frame was derived to be 0.26 mu b/sr. In order to make a more stringent constraint we have also performed a measurement at 2.0 GeV/c. Present analysis status of this new data is reported. (C) 2013 Elsevier B.V. All rights reserved.
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https://hdl.handle.net/11583/2543378
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