Indication of a deeply bound compact K-pp state formed in the pp -> p Lambda K+ reaction at 2.85 GeV
Nuclear Experiment
2010-04-06 v1
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 (= 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 with a mass M_X = 2265 +- 2 (stat) +- 5 (syst) MeV/c2 and a width Gamma_X = 118 +- 8 (stat) +- 10 (syst) MeV.
Keywords
Cite
@article{arxiv.1002.3526,
title = {Indication of a deeply bound compact K-pp state formed in the pp -> p Lambda K+ reaction at 2.85 GeV},
author = {T. Yamazaki and M. Maggiora and P. Kienle and K. Suzuki and A. Amoroso and M. Alexeev and F. Balestra and Y. Bedfer and R. Bertini and L. C. Bland and A. Brenschede and F. Brochard and M. P. Bussa and Seonho Choi and M. L. Colantoni and R. Dressler and M. Dzemidzic and J. -Cl. Faivre and L. Ferrero and J. Foryciarz and I. Froehlich and V. Frolov and R. Garfagnini and A. Grasso and S. Heinz and W. W. Jacobs and W. Kuhn and A. Maggiora and D. Panzieri and H. -W. Pfaff and G. Pontecorvo and A. Popov and J. Ritman and P. Salabura and S. Sosio and V. Tchalyshev and S. E. Vigdor},
journal= {arXiv preprint arXiv:1002.3526},
year = {2010}
}
Comments
4 pages, 4 figures