OBSERVATION AND ANALYSIS OF 1660 MEV 3PI-RESONANCE A3 IN 8 GEV/C PI+P INTERACTIONS

被引：11

作者：

BARTSCH, J

KEPPEL, E

KRAUS, G

SPETH, R

TSANOS, N

GROTE, C

LANIUS, K

NOWAK, S

RYSECK, E

BOTTCHER, H

COCCONI, VT

HANSEN, JD

KELLNER, G

KRUSE, U

MIHUL, A

MORRISON, DR

MOSKALEV, VI

TOFTE, H

机构：

[1] III. Physikalisches Institut der Technischen Hochschule, Aachen

[2] Institut für Hochenergiephysik der Deutschen Akademie der Wissenschaften zu Berlin, Zeuthen

[3] CERN, European Organization for Nuclear Research, Geneva

来源：

NUCLEAR PHYSICS B | 1968年 / B 7卷 / 04期

关键词：

D O I：

10.1016/0550-3213(68)90088-6

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 production of the 1660 MeV 3π-resonance called the A3 is studied in 8 GeV/c π+p interactions. Its mass and width are found to be (1660 ± 16) MeV and (115 ± 45) MeV, respectively. The cross section for π+p → p A3+ → p(π+π+π-) is found to be (46 ± 15) μb. The differential cross section has a slope of (5.5 ± 0.6) GeV-2. The spin-parity values are found to be most probably in the series 0-, 1+, 2-, 3+ ..., while the isospin is one and the G-parity is odd. Branching ratios into (3π) and (πfo are given for different spin-parity values, while the (πρ{variant}) decay rate is found to be consistent with zero. © 1968.

引用

页码：345 / &

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