EVIDENCE FOR LAMBDA-C(+) IN INCLUSIVE PP-](LAMBDA-O-PI+PI+PI-)+CHI AND PP -](K-PI+P) +CHI AT SQUARE-ROOT-S=53 AND 62 GEV

被引：77

作者：

LOCKMAN, W ^{[1
]}

MEYER, T ^{[1
]}

RANDER, J ^{[1
]}

SCHLEIN, P ^{[1
]}

WEBB, R ^{[1
]}

ERHAN, S ^{[1
]}

ZSEMBERY, J ^{[1
]}

机构：

[1] CENS,F-91190 GIF SUR YVETTE,FRANCE

来源：

PHYSICS LETTERS B | 1979年 / 85卷 / 04期

关键词：

D O I：

10.1016/0370-2693(79)91292-9

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

A search for the charmed baryon, Λc+, has been carried out in inclusively, measured Λ0π±π+π- and K-π±p final states with longitudinal x > 0.75 in an experiment at the CERN intersecting storage rings. An effect with invariant mass near 2.3 GeV is observed in Λ0π+π+π- with cross section times branching ratio Bσ = (2.8±1.0) μb; similar effect is observed in K-π+p with Bσ = (2.3 ± 0.3) μb. The effect is seen only in the positive charge state, in agreement with an interpretation as Λc+. However, it is pointed out that in the same experiment, the non-charmed hyperon state Σ(1385)+ also has a cross section much larger than its corresponding negative charge state Σ(1385)-. © 1979.

引用

页码：443 / 446

页数：4

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