High precision charmonium spectroscopy in pp annihilations

✍ Scribed by Roberto Calabress; G. Garzoglio; K. Gollwitzer; A. Hahn; W. Marsh; J. Peoples Jr.; S. Pordes; G. Stancari; J. Streets; S. Werkena; M. Ambrogiani; W. Baldini; D. Bettoni; R. Calabrese; P. Dalpiaz; E. Luppi; M. Martini; R. Mussa; M. Savriè; A. Buzzo; M. Lo Vetere; M. Macrí; M. Marinelli; M. Pallavicini; C. Patrignani; E. Robutti; A. Santroni; G. Lasio; M. Mandelkern; J. Schultz; M. Stancari; G. Zioulas; X. Fan; S. Jin; J. Kasper; P. Maas; T. Pedlar; J. Rosen; K.K. Seth; S. Bagnasco; G. Borreani; R. Cester; F. Marchetto; E. Menichetti; N. Pastrone; P. Rumerio; R. McTaggart

• Publisher: Elsevier Science
• Year: 1999
• Tongue: English
• Weight: 274 KB
• Volume: 655
• Category: Article
• ISSN: 0375-9474
• DOI: 10.1016/s0375-9474(99)00176-1

✦ Synopsis

Fermilab experiment E835 studies the direct formation of charmonium states in protonantiproton annihilations, obtained by intersecting the/5 beam of the Fermilab Antiproton Accumulator with an internal hydrogen jet target.

In this paper we report the preliminary results from the 1996/1997 run, in particular about r]~ mass and width, search for ~/~ and first observation of the ;go state in pp annihilations.