Study of the reactionp¯p→φφfrom1.1 to 2.0GeV/c

Autor:	C. Evangelista, A. Palano, D. Drijard, N. H. Hamann, R. T. Jones, B. Mouëllic, S. Ohlsson, J.-M. Perreau, W. Eyrich, M. Moosburger, S. Pomp, F. Stinzing, H. Fischer, J. Franz, E. Rössle, H. Schmitt, H. Wirth, A. Buzzo, K. Kirsebom, M. Lo Vetere, M. Macrì, 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. Röhrich, M. Rook, O. Steinkamp, H. Korsmo, B. Stugu, T. Johansson
Rok vydání:	1998
Předmět:	Physics Nuclear and High Energy Physics Particle physics Meson Branching fraction Resonance Nuclear physics Momentum OZI rule Antiproton High Energy Physics::Experiment Nuclear Experiment Order of magnitude Spin-½
Zdroj:	Physical Review D. 57:5370-5381
ISSN:	1089-4918 0556-2821
Popis:	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.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::ce7c594b3e73c37f082e1a30cc3df5bf https://doi.org/10.1103/physrevd.57.5370 Zobrazit plný text záznamu