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  1. Pubblicazioni

Indication of a Deeply Bound and Compact K- pp State Formed in the pp -> p Lambda K+ Reaction at 2.85 GeV

Articolo
Data di Pubblicazione:
2010
Abstract:
We have analyzed data of the DISTO experiment on the exclusive pp -> p Lambda K+ reaction at 2.85 GeV to search for a strongly bound compact K- pp(equivalent to X) state to be formed in the pp -> K+ + X reaction. The observed spectra of the K+ missing mass and the p Lambda invariant-mass with high transverse momenta of p and K+ revealed a broad distinct peak of 26-sigma confidence with a mass M-X = 2267 +/- 3(stat) +/- 5(syst) MeV/c(2) and a width Gamma(X) = 118 +/- 8(stat) +/- 10(syst) MeV. The enormously large cross section indicates formation of a compact K- pp with a large binding energy of B-K = 103 MeV, which can be a possible gateway toward cold and dense kaonic nuclear matter.
Tipologia CRIS:
03A-Articolo su Rivista
Keywords:
NUCLEAR CLUSTERS; SYSTEMS
Elenco autori:
Yamazaki T; Maggiora M; Kienle P; Suzuki K; Amoroso A; Alexeev M; Balestra F; Bedfer Y; Bertini R; Bland LC; Brenschede A; Brochard F; Bussa MP; Choi S; Colantoni ML; Dressler R; Dzemidzic M; Faivre JC; Ferrero L; Foryciarz J; Frohlich I; Frolov V; Garfagnini R; Grasso A; Heinz S; Jacobs WW; Kuhn W; Maggiora A; Panzieri D; Pfaff HW; Pontecorvo G; Popov A; Ritman J; Salabura P; Sosio S; Tchalyshev V; Vigdor SE
Autori di Ateneo:
ALEXEEV Maxim
AMOROSO Antonio
BUSSA Maria Pia Simonetta
MAGGIORA Marco
Link alla scheda completa:
https://iris.unito.it/handle/2318/75481
Link al Full Text:
https://iris.unito.it/retrieve/handle/2318/75481/9599/PhysRevLett.104.132502.pdf
Pubblicato in:
PHYSICAL REVIEW LETTERS
Journal
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