Exclusive Final States from Photon - Photon Collisions at Spear
نویسنده
چکیده
Studies of exclusive final states produced by the two-photon process have been made at SPEAR by the Mark II and by the Crystal Ball Collaborations. region 500 MeV/c2 Measurements of r%rand x0x0 production in the mass < mx, < 2000 MeV/c2 are presented. These data include strong signals from the well-known f(1270) meson. The A2(1310) has been observed via its rr"n decay mode and its partial width to yy has been determined. A measurement of the cross section for the reaction yy + IT+IT~~~~"IT~ is reported. This channel is found to be small just above the four pion threshold, but exhibits a large enhancement near the pop0 threshold.
منابع مشابه
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تاریخ انتشار 1981