Search for the deeply bound K–pp state from the semi-inclusive forward-neutron spectrum in the in-flight K– reaction on helium-3
J-PARC E15 Collaboration, T Hashimoto… - … of Theoretical and …, 2015 - academic.oup.com
J-PARC E15 Collaboration, T Hashimoto, S Ajimura, G Beer, H Bhang, M Bragadireanu…
Progress of Theoretical and Experimental Physics, 2015•academic.oup.comAn experiment to search for the bound state was performed via the in-flight reaction using
kaons at 1 GeV/at the J-PARC hadron experimental facility. In the semi-inclusive neutron
missing-mass spectrum at, no significant peak was observed in the region corresponding to
binding energy larger than 80 MeV, where a bump structure has been reported in the final
state in different reactions. Assuming the state to be isotropically decaying into, mass-
dependent upper limits on the production cross section were determined to be 30–180, 70 …
kaons at 1 GeV/at the J-PARC hadron experimental facility. In the semi-inclusive neutron
missing-mass spectrum at, no significant peak was observed in the region corresponding to
binding energy larger than 80 MeV, where a bump structure has been reported in the final
state in different reactions. Assuming the state to be isotropically decaying into, mass-
dependent upper limits on the production cross section were determined to be 30–180, 70 …
Abstract
An experiment to search for the bound state was performed via the in-flight reaction using kaons at 1 GeV/ at the J-PARC hadron experimental facility. In the semi-inclusive neutron missing-mass spectrum at , no significant peak was observed in the region corresponding to binding energy larger than 80 MeV, where a bump structure has been reported in the final state in different reactions. Assuming the state to be isotropically decaying into , mass-dependent upper limits on the production cross section were determined to be 30–180, 70–250, and 100–270b/sr, for the natural widths of 20, 60, and 100 MeV, respectively, at 95% confidence level.