We have analyzed data of the DISTO experiment on the exclusive pp ! K+p process at Tp = 2.85 GeV to search for a K−pp ( X) nuclear bound state to be formed in the pp ! K+ + X reaction. The deviation spectra of the K+ missing-mass M(K+) and p invariant-mass M(p) with selection of large-angle proton emission revealed a structure with MX = 2265 ± 2 MeV/c2 and X = 118 ± 8 MeV.

First exclusive measurements of the K- pp state populated in the pp ---> K+ Lambda p reaction at 2.85-GeV

MAGGIORA, MARCO;M. Alexeev;BALESTRA, Ferruccio;BERTINI, Raimondo Pietro;M. P. Bussa;CHIOSSO, Michela;FERRERO, Livio;FROLOV, VLADIMIR;GRASSO, Antonino;PANZIERI, Daniele;ZOSI, Gianfranco
2008

Abstract

We have analyzed data of the DISTO experiment on the exclusive pp ! K+p process at Tp = 2.85 GeV to search for a K−pp ( X) nuclear bound state to be formed in the pp ! K+ + X reaction. The deviation spectra of the K+ missing-mass M(K+) and p invariant-mass M(p) with selection of large-angle proton emission revealed a structure with MX = 2265 ± 2 MeV/c2 and X = 118 ± 8 MeV.
nuclei · kaon condensation · super-strong nuclear force · strange dibaryon
T. Yamazaki; P. Kienle; K. Suzuki ; M. Maggiora; M. Alexeev; F. Balestra ; Y. Bedfer; R. Bertini; L. C. Bland ; A. Brenschede; F. Brochard; M. P. Bussa; M. Chiosso; Seonho Choi; M. L. Colantoni; R. Dressler; M. Dzemidzic; J.-Cl. Faivre; L. Ferrero; J. Foryciarz; I. Fr¨ohlich ; V. Frolov; R. Garfagnini; A. Grasso; S. Heinz; W. W. Jacobs; W. K¨uhn ; A. Maggiora; D. Panzieri; H.-W. Pfaff; G. Pontecorvo; A. Popov; J. Ritman; P. Salabura; V. Tchalyshev; F. Tosello; S. E. Vigdor; G. Zosi
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/2318/67192
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