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[en] We measured the (K–, π+) reaction spectra at 1.8 GeV/c for the graphite and the polyethylene targets in the J-PARC E05 pilot experiment. By comparing the spectra for these two targets, it was found that Σ*–(1385) in the 11B nucleus is quite broadened. Furthermore, we also compared broadness of Σ*–(1385) with K*(892) obtained in the (K–, p) spectrum. Σ*–(1385) seems to be much more broadened in nuclei than K*(892). We gave a possible interpretation, which is related to compositeness of decuplet baryons, for this situation. (author)
Source
Dote, Akinobu; Morimatsu, Osamu (High Energy Accelerator Research Organization (KEK), Tsukuba, Ibaraki (Japan)) (eds.); Goto, Yuji (ed.) (RIKEN, Wako, Saitama (Japan)) (and others); [780 p.]; ISBN 978-4-89027-136-8; 
; 2019; p. 023014.1-023014.4; QNP2018: 8. international conference on quarks and nuclear physics; Tsukuba, Ibaraki (Japan); 13-17 Nov 2018; Available from https://doi.org/10.7566/JPSCP.26.023014; 7 refs., 2 figs.
; 2019; p. 023014.1-023014.4; QNP2018: 8. international conference on quarks and nuclear physics; Tsukuba, Ibaraki (Japan); 13-17 Nov 2018; Available from https://doi.org/10.7566/JPSCP.26.023014; 7 refs., 2 figs.