DISTO data on K(-)pp

作者：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; Froehlich I; Frolov V; Garfagnini R; Grasso A; Heinz S; Jacobs W W; Kuehn W; Maggiora A; Panzieri D; Sosio S; Pfafl H W; Pontecorvo G; Popov A; Ritman J; Salabura P; Tchalyshev V

来源：Nuclear Physics A, 2010, 835(1-4): 43-50.

DOI：10.1016/j.nuclphysa.2010.01.173

• (K)over-bar nuclei
• kaon condensation
• super-strong nuclear force
• strange di-baryon

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).

• 出版日期2010-4-1
• 单位中国地震局