Measurement of the branching ratio for the [Xi][sup [minus]][r arrow][Sigma][sup [minus]][gamma] radiative decay

Journal Article · Sun Feb 06 23:00:00 EST 1994 · Physical Review Letters; (United States)

DOI:https://doi.org/10.1103/PhysRevLett.72.808· OSTI ID:5014351

Dubbs, T; Albuquerque, I F; Bondar, N F; Carrigan, R Jr; Chen, D; Cooper, P S; Lisheng, D; Denisov, A S; Dobrovolsky, A V; Endler, A M.F.; Escobar, C O; Foucher, M; Golovtsov, V L; Gottschalk, H; Gouffon, P; Grachev, V T; Khanzadeev, A V; Kubantsev, M A; Kuropatkin, N P; Lach, J ; Pengfei, L; Chengze, L; Yunshan, L; Luksys, M; Mahon, J R.P.; McCliment, E; Morelos, A; Newsom, C; Pommot Maia, M C; Samsonov, V M; Schegelsky, V A; Huanzhang, S; Smith, V J; Fukun, T; Terentyev, N K; Timm, S; Tkatch, I I; Uvarov, L N; Vorobyov, A A; Jie, Y; Wenheng, Z; Shuchen, Z; Yuanyuan, Z ^[1]

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1. Fermi National Accelerator Laboratory, Batavia, Illinois 60510 (United States) Petersburg Nuclear physics Institute, Gatchina (Russian Federation) Institute of High Energy Physics, Beijing (China) H. H. Wills Physics Laboratory, University of Bristol, Bristol (United Kingdom) Carnegie Mellon University, Pittsburgh, Pennsylvania 15213 (United States) University of Iowa, Iowa Cit

We have measured the branching ratio for the hyperon radiative decay [Xi][sup [minus]][r arrow][Sigma][sup [minus]][gamma] from a sample of 211[plus minus]33 events obtained in the polarized 375 GeV/[ital c] charged hyperon beam at Fermilab. We find [ital B]([Xi][sup [minus]][r arrow][Sigma][sup [minus]][gamma]/[Xi][sup [minus]][r arrow][Lambda][sup 0][pi][sup [minus]])=(1.22[plus minus]0.23[plus minus]0.06)[times]10[sup [minus]4] where the quoted errors are statistical and systematic, respectively. We have also obtained an indication that the sign of the asymmetry parameter of this decay is positive.

• DOE Contract Number: AC02-80ER10587; AC02-76CH03000; AC02-76ER03075
• OSTI ID: 5014351
• Journal Information: Physical Review Letters; (United States), Journal Name: Physical Review Letters; (United States) Vol. 72:6; ISSN 0031-9007; ISSN PRLTAO
• Country of Publication: United States
• Language: English

Related Subjects

662390* -- Electromagnetic Processes & Properties-- (1992-)
662410 -- Properties of Baryons & Baryon Resonances-- (1992-)
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ASYMMETRY
BARYONS
BRANCHING RATIO
CALCULATION METHODS
DECAY
ELEMENTARY PARTICLES
FERMIONS
HADRONS
HYPERONS
MONTE CARLO METHOD
PARTICLE DECAY
RADIATIVE DECAY
SIGMA BARYONS
SIGMA MINUS PARTICLES
SIGMA PARTICLES
STRANGE PARTICLES
XI BARYONS
XI MINUS PARTICLES
XI PARTICLES