Upper limit on the decay Sigma(1385)(-) -> Sigma(-)gamma and cross section for gamma Sigma(-) -> Lambda pi(-)


Molchanov V., Alkhazov G., Atamantchouk A., Balatz M., Bondar N., Casey D., ...Daha Fazla

PHYSICS LETTERS B, cilt.590, ss.161-169, 2004 (SCI İndekslerine Giren Dergi) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 590
  • Basım Tarihi: 2004
  • Doi Numarası: 10.1016/j.physletb.2004.04.006
  • Dergi Adı: PHYSICS LETTERS B
  • Sayfa Sayıları: ss.161-169

Özet

Coherent Lambdapi(-) production on Pb of 600 GeV Sigma(-) hyperons has been studied with the SELEX facility at Fermilab. Using the Primakoff formalism, we set a 90% CL upper limit on the radiative decay width Gamma[Sigma(1385)(-) --> Sigma(-) gamma] < 9.5 keV, and estimate the cross section for gamma Sigma(-) --> Lambdapi(-) at roots approximate to 1.385 GeV to be 56 +/- 16 mub. Crown Copyright (C) 2004 Published by Elsevier B.V. All rights reserved.