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DISTO data on Kpp

Authors :
Maggiora, M.
Kienle, P.
Suzuki, K.
Yamazaki, T.
Collaboration, DISTO
Alexeev, M.
Amoroso, A.
Balestra, F.
Bedfer, Y.
Bertini, R.
Bland, L. C.
Brenschede, A.
Brochard, F.
Bussa, M. P.
Choi, S.
Colantoni, M. L.
Dressler, R.
Dzemidzic, M.
Faivre, J. Cl.
Ferrero, L.
Foryciarz, J.
Fröhlich, I.
Frolov, V.
Garfagnini, R.
Grasso, A.
Heinz, S.
Jacobs, W. W.
Kühn, W.
Maggiora, A.
Panzieri, D.
Sosio, S.
Pfaff, H. W.
Pontecorvo, G.
Popov, A.
Ritman, J.
Salabura, P.
Tchalyshev, V.
Vigdor, S. E.
Source :
Nucl.Phys.A835:43-50,2010
Publication Year :
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.<br />Comment: 8 pages, 4 figures. Talk presented at the "10th International Conference on Hypernuclear and Strange Particle Physics" (HYP-X), Tokai, Ibaraki, Japan, September 14th-18th, 2009. To appear in the proceedings

Subjects

Subjects :
High Energy Physics - Experiment

Details

Database :
arXiv
Journal :
Nucl.Phys.A835:43-50,2010
Publication Type :
Report
Accession number :
edsarx.0912.5116
Document Type :
Working Paper
Full Text :
https://doi.org/10.1016/j.nuclphysa.2010.01.173