AN OBSERVATION OF EXCLUSIVE LAMBDA-C+ DECAYS INTO SIGMA+ AND MESONS

被引：36

作者：

BARLAG, S

BECKER, H

BOZEK, A

BOHRINGER, T

BOSMAN, M

CASTILLO, V

CHABAUD, V

DAMERELL, C

DAUM, C

DIETL, H

GILLMAN, A

GILMORE, R

GOOCH, T

GORLICH, L

GRAS, P

HAJDUK, Z

HIGON, E

KELSEY, DP

KLANNER, R

KWAN, S

LUCKING, B

LUTJENS, G

LUTZ, G

MALOS, J

MANNER, W

NEUGEBAUER, E

PALKA, H

PEPE, M

RICHARDSON, J

RYBICKI, K

SEEBRUNNER, HJ

STIERLIN, U

TIECKE, HG

WALTERMANN, G

WATTS, S

WEILHAMMER, P

WICKENS, F

WIGGERS, LW

WITEK, M

ZELUDZIEWICZ, T

机构：

[1] MAX PLANCK INST PHYS & ASTROPHYS,W-8000 MUNICH,GERMANY

[2] INST NUCL PHYS,PL-30055 KRAKOW,POLAND

[3] CERN,CH-1211 GENEVA 23,SWITZERLAND

[4] RUTHERFORD APPLETON LAB,DIDCOT OX11 0QX,OXON,ENGLAND

[5] NIKHEF H,1009 DB AMSTERDAM,NETHERLANDS

[6] UNIV BRISTOL,BRISTOL BS8 1TL,AVON,ENGLAND

[7] UNIV VALENCIA,VALENCIA,SPAIN

[8] CSIC,VALENCIA,SPAIN

[9] IFIC,VALENCIA,SPAIN

[10] BRUNEL UNIV,UXBRIDGE UB8 3PH,MIDDX,ENGLAND

来源：

PHYSICS LETTERS B | 1992年 / 283卷 / 3-4期

关键词：

D O I：

10.1016/0370-2693(92)90048-9

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Using data from the NA32 experiment at CERN we have studied the LAMBDA(c)+ decays containing a SIGMA+ among the decay products. The interactions of 230 GeV pi- with a Cu target were analysed using a precise vertex telescope (charge-coupled devices and silicon microstrip detectors) and the ACCMOR spectrometer. We have found eleven LAMBDA(c)+ --> SIGMA+pi+pi-, one LAMBDA(c)+ --> SIGMA+K+K-, two LAMBDA(c)+ --> SIGMA+K+pi- and LAMBDA(c)+ --> SIGMA+pi+pi-pi+pi- decays practically without any background. We have measured the branching ratios with respect to the LAMBDA(c)+ --> pK-pi+ channel.

引用

页码：465 / 470

页数：6

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