MEASUREMENT OF THE BRANCHING RATIO FOR THE XI(-)-]SIGMA(-)GAMMA-RADIATIVE DECAY

Authors
DUBBS T ALBUQUERQUE IF BONDAR NF CARRIGAN R CHEN D COOPER PS DAI LS DENISOV AS DOBROVOLSKY AV ENDLER AMF ESCOBAR CO FOUCHER M GOLOVTSOV VL GOTTSCHALK H GOUFFON P GRACHEV VT KHANZADEEV AV KUBANTSEV MA KUROPATKIN NP LACH J LANG PF LI CZ LI YS LUKSYS M MAHON JRP MCCLIMENT E MORELOS A NEWSOM C MAIA MCP SAMSONOV VM SCHEGELSKY VA SHI HZ SMITH VJ TANG FK TERENTYEV NK TIMM S TKATCH II UVAROV LN VOROBYOV AA YAN J ZHAO WH ZHENG SC ZHONG YY
Citation
T. Dubbs et al., MEASUREMENT OF THE BRANCHING RATIO FOR THE XI(-)-]SIGMA(-)GAMMA-RADIATIVE DECAY, Physical review letters, 72(6), 1994, pp. 808-811
Citations number
9
Categorie Soggetti
Physics
Journal title
Physical review letters → ACNP
ISSN journal
00319007
Volume
72
Issue
6
Year of publication
1994
Pages
808 - 811
Database
ISI
SICI code
0031-9007(1994)72:6<808:MOTBRF>2.0.ZU;2-#
Abstract
We have measured the branching ratio for the hyperon radiative decay X I- --> SIGMA- gamma from a sample of 211 +/- 33 events obtained in the polarized 375 GeV/c charged hyperon beam at Fermilab. We find B(XI- - -> SIGMA- gamma/XI- --> LAMBDA0pi-) = (1.22 +/- 0.23 +/- 0.06) X 10(-4 ) where the quoted errors are statistical and systematic, respectively . We have also obtained an indication that the sign of the asymmetry p arameter of this decay is positive.