Archivio Istituzionale della RicercaThis Letter is concerned with the study of the K(stop)(-)A -> pi(+/-)Sigma(-/+)A ' reaction in p-shell nuclei, i.e., (6.7)Li, (9)Be, (13)C and (16)O. The pi(+/-)Sigma(-/+)/K(stop)(-) emission rates are reported as a function of A. These rates are discussed in comparison with previous findings. The ratio pi(-)Sigma(+)/pi(+)Sigma(-) in p-shell nuclei is found to depart largely from that on hydrogen, which provides support for large in-medium effects possibly generated by the sub-threshold Lambda(1405). The continuum momentum spectra of prompt pions and free sigmas are also discussed as well as the pi(+/-)Sigma(-/+) missing mass behavior and the link with the reaction mechanism. The apparatus used for the investigation is the FINUDA spectrometer operating at the DA Phi NE phi-factory (LNF-INFN, Italy). (C) 2011 Elsevier B.V. All rights reserved.
The A(K(stop)(-), pi(+/-)Sigma(-/+))A ' reaction on p-shell nuclei / Agnello, M., Benussi, L., Bertani, M., Bhang, H.C., Bonomi, G., Botta, E., Bregant, M., Bressani, T., Bufalino, S., Busso, L., Calvo, D., Camerini, P., Dalena, B., De Mori, F., D'Erasmo, G., Fabbri, F.L., Feliciello, A., Filippi, A., Fiore, E.M., Fontana, A., et al.. - In: PHYSICS LETTERS. SECTION B. - ISSN 0370-2693. - STAMPA. - 704:5(2011), pp. 474-480. [10.1016/j.physletb.2011.09.076]
The A(K(stop)(-), pi(+/-)Sigma(-/+))A ' reaction on p-shell nuclei
AGNELLO, MICHELANGELO;BUFALINO, STEFANIA;
2011
Abstract
This Letter is concerned with the study of the K(stop)(-)A -> pi(+/-)Sigma(-/+)A ' reaction in p-shell nuclei, i.e., (6.7)Li, (9)Be, (13)C and (16)O. The pi(+/-)Sigma(-/+)/K(stop)(-) emission rates are reported as a function of A. These rates are discussed in comparison with previous findings. The ratio pi(-)Sigma(+)/pi(+)Sigma(-) in p-shell nuclei is found to depart largely from that on hydrogen, which provides support for large in-medium effects possibly generated by the sub-threshold Lambda(1405). The continuum momentum spectra of prompt pions and free sigmas are also discussed as well as the pi(+/-)Sigma(-/+) missing mass behavior and the link with the reaction mechanism. The apparatus used for the investigation is the FINUDA spectrometer operating at the DA Phi NE phi-factory (LNF-INFN, Italy). (C) 2011 Elsevier B.V. All rights reserved.
Pubblicazioni consigliate
I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
https://hdl.handle.net/11583/2496866
Attenzione
Attenzione! I dati visualizzati non sono stati sottoposti a validazione da parte dell'ateneo