The data from the DISTO Collaboration on the exclusive pp -> pK(+)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 Delta MK+, 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).
DISTO data on K(-)pp
MAGGIORA, MARCO;M. Alexeev;AMOROSO, Antonio;BALESTRA, Ferruccio;BUSSA, Maria Pia;GRASSO, Antonino;SOSIO, Stefano;
2010-01-01
Abstract
The data from the DISTO Collaboration on the exclusive pp -> pK(+)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 Delta MK+, 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).
File in questo prodotto:
| File | Dimensione | Formato | |
|---|---|---|---|
|
2010_NP_A835_43-50.pdf
Accesso riservato
Tipo di file:
POSTPRINT (VERSIONE FINALE DELL’AUTORE)
Dimensione
1.13 MB
Formato
Adobe PDF
|
1.13 MB | Adobe PDF | Visualizza/Apri Richiedi una copia |
I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
