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DECAY ANALYSIS OF LOW-MASS KPIPI ENHANCEMENT INTO K'890 AND PI-PI SYSTEMS

被引：17
作者：
ALEXANDER, G
FIRESTONE, A
GOLDHABER, G
LISSAUER, D
机构：
[1] Department of Physics, Lawrence Radiation Laboratory University of California, Berkeley
来源：
NUCLEAR PHYSICS B | 1969年 / B 13卷 / 03期
关键词：
D O I：
10.1016/0550-3213(69)90187-4
中图分类号：
O412 [相对论、场论]; O572.2 [粒子物理学];
学科分类号：
摘要：
The low-mass Kππ enhancement is studied in K+p→K+π+π-p and K+p→ →K0π+π0p interactions at 9 GeV/c. This enhancement consists of two peaks of mass and width M=1260±10 MeV, Γ=40±10 MeV and M=1380±20 MeV, Γ= 120±20 MeV. The main decay modes are K890*π and ρ{variant}K, which interfere strongly. A consistent description of the data requires either an additional decay mode into K+ plus an I=0 s-wave π-π system 〈ε{lunate}7200〉 or a large interference effect between two components of the Q, or both. © 1969.
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页码：503 / +
页数：1
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