DISTO data on Kpp
High Energy Physics - Experiment
2012-08-27 v1
Abstract
The data from the DISTO Collaboration on the exclusive pp -> p K+ 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 DeltaM_{K+} 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.
Cite
@article{arxiv.0912.5116,
title = {DISTO data on Kpp},
author = {M. Maggiora and P. Kienle and K. Suzuki and T. Yamazaki and DISTO Collaboration and : and M. Alexeev and A. Amoroso and F. Balestra and Y. Bedfer and R. Bertini and L. C. Bland and A. Brenschede and F. Brochard and M. P. Bussa and S. Choi and M. L. Colantoni and R. Dressler and M. Dzemidzic and J. Cl. Faivre and L. Ferrero and J. Foryciarz and I. Fröhlich and V. Frolov and R. Garfagnini and A. Grasso and S. Heinz and W. W. Jacobs and W. Kühn and A. Maggiora and D. Panzieri and S. Sosio and H. W. Pfaff and G. Pontecorvo and A. Popov and J. Ritman and P. Salabura and V. Tchalyshev and S. E. Vigdor},
journal= {arXiv preprint arXiv:0912.5116},
year = {2012}
}
Comments
8 pages, 4 figures. Talk presented at the "10th International Conference on Hypernuclear and Strange Particle Physics" (HYP-X), Tokai, Ibaraki, Japan, September 14th-18th, 2009. To appear in the proceedings