Study of (p)over-bar-p→π+π-π+π-π0 annihilation

被引：0
|
作者：
Tretyak, VI [1 ]
机构：
[1] Joint Inst Nucl Res, Dubna 141980, Russia
来源：
NUCLEAR PHYSICS A | 2001年 / 692卷 / 1-2期
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中图分类号：
O57 [原子核物理学、高能物理学];
学科分类号：
070202 ;
摘要：
Preliminary results of spin-parity analysis of the antiproton-proton annihilation into the pi (+)pi (-)pi (+)pi (-)pi (0) final state at the (p) over bar momentum 50MeV/c are reported. The fit was found to depend considerably on the parameters of the pi (+)pi (-) S-wave state - f(0)(400-1200) or sigma meson, requiring the low value for the mass of sigma. The best result is obtained with the sigma mass M-sigma = (392 +/- 6)MeV and width Gamma (sigma) = (528 +/- 20)MeV.
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页码：379C / 382C
页数：4
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