STUDY OF PI(+)PI(-)-PAIR PRODUCTION IN A 2-PHOTON PROCESS AT TRISTAN

F YABUKI,K ABE, K AMAKO,Y ARAI,T ARIMA,Y ASANO,M CHIBA,Y CHIBA,M DAIGO,M FUKAWA,Y FUKUSHIMA,J HABA,Y HEMMI,M HIGUCHI,F HINODE,T HIROSE,Y HOMMA,N HOSODA,N ISHIHARA,N KANDA,N KANEMATSU, J KANSAKI,R KIKUCHI,T KONDO,TT KORHONEN, A KRUGER,H KURASHIGE,J MACNAUGHTON,EK MATSUDA,T MATSUI,M MIURA,K MIYAKE,S MORI,Y NAGASHIMA,T NAKAMURA,I NAKANO,S ODAKA,K OGAWA, T OHAMA,T OHSUGI,H OHYAMA,A OKAMOTO,A ONO,T OYAMA,H SAKAMOTO, M SAKUDA,M SATO,N SATO,M SHIODEN,J SHIRAI,M SHIRAKATA,T SUMIYOSHI,A SUZUKI,Y TAKADA, H TAKAKI, F TAKASAKI,M TAKITA,N TAMURA,K TOBIMATSU,T TSUBOYAMA,S UEHARA,Y UNNO, M UTSUMI, Y WATASE,Y YAMADA,T YAMAGATA,Y YONEZAWA,H YOSHIDA

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN（1995）

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摘要

We measured the cross section for the gamma gamma-->pi(+)pi(-) process in the pion pair invariant mass range of 1.0-1.5 GeV/c(2) with the VENUS detector at TRISTAN. The yy decay width of the f(2) (1270) resonance was obtained by using Vermaseren's model and a partial wave analysis. The results from both analyses were in good agreement. The partial wave analysis indicated the presence of a J=0 component around at 1.2 GeV/c(2) with a resonance-like structure.

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关键词

TRISTAN,2-PHOTON PROCESS,PI(+)PI(-) PAIR PRODUCTION,RESONANCE PRODUCTION,AND F(2)(1270)

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