Study of the reaction pbar p -> phi phi from 1.1 to 2.0 GeV/c

C. Evangelista , A. Palano , D. Drijard , N. H. Hamann , R. T. Jones , B. Mou\"ellic , S. Ohlsson , J. -M. Perreau

show 35 more authors

W. Eyrich M. Moosburger S. Pomp F. Stinzing H. Fischer J. Franz E. R\"ossle H. Schmitt H. Wirth A. Buzzo K. Kirsebom M. Lo Vetere M. Macr\`{\i} M. Marinelli S. Passaggio M. G. Pia A. Pozzo E. Robutti A. Santroni P. T. Debevec R. A. Eisenstein P. G. Harris D. W. Hertzog S. A. Hughes P. E. Reimer J. Ritter R. Geyer K. Kilian W. Oelert K. R\"ohrich M. Rook O. Steinkamp H. Korsmo B. Stugu T. Johansson

Authors on Pith no claims yet

classification ✦ hep-ex

keywords pbarreactioncrossmagnitudemomentumresonancesectionabove

0 comments

read the original abstract

A study has been performed of the reaction pbar p -> 4K using in-flight antiprotons from 1.1 to 2.0 GeV/c incident momentum interacting with a hydrogen jet target. The reaction is dominated by the production of a pair of phi mesons. The pbar p -> phi phi cross section rises sharply above threshold and then falls continuously as a function of increasing antiproton momentum. The overall magnitude of the cross section exceeds expectations from a simple application of the OZI rule by two orders of magnitude. In a fine scan around the xi/f_J(2230) resonance, no structure is observed. A limit is set for the double branching ratio B(xi -> pbar p) * B(xi -> phi phi) < 6e-5 for a spin 2 resonance of M = 2.235 GeV and Width = 15 MeV.

This paper has not been read by Pith yet.

Study of the reaction pbar p -> phi phi from 1.1 to 2.0 GeV/c

discussion (0)