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Maggiora, M.; Kienle, P.; Suzuki, K.; Yamazaki, T.; 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.
Nuclear physics. A, 04/2010, Letnik: 835, Številka: 1Journal Article
The data from the DISTO Collaboration on the exclusive p p → p K + Λ production acquired at T p = 2.85 GeV have been re-analysed in order to search for a deeply bound K − p p ( ≡ X ) state, to be formed in the binary process p p → K + X . The preliminary spectra of the Δ M K + missing-mass and of the M p Λ 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 Γ X = 118 ± 8 MeV / c 2 .
