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19 April 2024

» arxiv » 0912.5116

Article overview

DISTO data on Kpp
M. Maggiora ; P. Kienle ; K. Suzuki ; T. Yamazaki ; DISTO Collaboration ; M. Alexeev ; A. Amoroso ; F. Balestra ; Y. Bedfer ; R. Bertini ; L. C. Bland ; A. Brenschede ; F. Brochard ; M. P. Bussa ; S. Choi ; M. L. Colantoni ; R. Dressler ; M. Dzemidzic ; J. Cl. Faivre ; L. Ferrero ; J. Foryciarz ; I. Fröhlich ; V. Frolov ; R. Garfagnini ; A. Grasso ; S. Heinz ; W. W. Jacobs ; W. Kühn ; A. Maggiora ; D. Panzieri ; S. Sosio ; H. W. Pfaff ; G. Pontecorvo ; A. Popov ; J. Ritman ; P. Salabura ; V. Tchalyshev ; S. E. Vigdor ;
Date:	28 Dec 2009
Abstract:	The data from the DISTO Collaboration on the exclusive pp -> p K+ Lambda production acquired at T_p = 2.85 GeV have been re-analysed in order to search for a deeply bound K- pp (= X) state, to be formed in the binary process pp -> K+ X. The preliminary spectra of the DeltaM_{K+} missing-mass and of the M_{p Lambda} invariant-mass show, for large transverse-momenta of protons and kaons, a distinct broad peak with a mass M_X = 2265 +- 2 MeV/c^2 and a width Gamma_X = 118 +- 8 MeV/c^2.
Source:	arXiv, 0912.5116
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