Upper limit on the decay Sigma(1385)- --> Sigma- gamma, and cross section for gamma Sigma- --> Lambda pi-
High Energy Physics - Experiment
2008-11-26 v2
Abstract
Coherent Lambda pi- 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- --> Lambda pi- at sqrt(s) = 1.385 GeV to be 56+/-16 mkb.
Cite
@article{arxiv.hep-ex/0402026,
title = {Upper limit on the decay Sigma(1385)- --> Sigma- gamma, and cross section for gamma Sigma- --> Lambda pi-},
author = {SELEX Collaboration and V. V. Molchanov},
journal= {arXiv preprint arXiv:hep-ex/0402026},
year = {2008}
}
Comments
13 pages, 3 figures, LaTeX, few clarifications, accepted by Phys.Lett.B