%0 Journal Article
%T First determination of the one-proton induced Non-Mesonic Weak Decay width of p-shell ĻĢ-Hypernuclei
%A M. Agnello
%A L. Benussi
%A M. Bertani
%A H. C. Bhang
%A G. Bonomi
%A E. Botta
%A T. Bressani
%A S. Bufalino
%A D. Calvo
%A P. Camerini
%A B. Dalena
%A F. De Mori
%A G. D Erasmo
%A A. Feliciello
%A A. Filippi
%A H. Fujioka
%A P. Gianotti
%A N. Grion
%A V. Lucherini
%A S. Marcello
%A T. Nagae
%A H. Outa
%A V. Paticchio
%A S. Piano
%A R. Rui
%A G. Simonetti
%A A. Zenoni
%J Physics
%D 2014
%I arXiv
%R 10.1016/j.physletb.2014.10.024
%X Previous studies of proton and neutron spectra from Non-Mesonic Weak Decay of eight Lambda-Hypernuclei (A = 5-16) have been revisited. New values of the ratio of the two-nucleon and the one-proton induced decay widths, Gamma_2N/Gamma_p, are obtained from single proton spectra, Gamma_2N/Gamma_p = 0.50 +/- 0.24, and from neutron and proton coincidence spectra, Gamma_2N/Gamma_p = 0.36 +/- 0.14stat +0.05sys -0.04sys , in full agreement with previously published ones. With these values, a method is developed to extract the one-proton induced decay width in units of the free Lambda decay width, Gamma_p/Gamma_Lambda, without resorting to Intra Nuclear Cascade models but by exploiting only experimental data, under the assumption of a linear dependence on A of the Final State Interaction contribution. This is the first systematic determination ever done and it agrees within the errors with recent theoretical calculations.
%U http://arxiv.org/abs/1410.2714v1