Measurement of the radiative decay width \Gamma[\Lambda(1520) --> \Lambda \gamma] with the SPHINX spectrometer
High Energy Physics - Experiment
2008-11-26 v2
Abstract
The radiative decay \Lambda(1520) --> \Lambda \gamma was measured directly in the study of exclusive diffractive-like reaction p + N --> \Lambda(1520) K^+ + N, \Lambda(1520) --> \Lambda \gamma with the SPHINX spectrometer. The values of the branching and partial width of this radiative decay were obtained: BR[\Lambda(1520) --> \Lambda \gamma] = (1.02+/-0.21(stat)+/-0.15(syst))x10^{-2} and \Gamma[\Lambda(1520) --> \Lambda \gamma] = 159+/-33(stat)+/-26(syst) keV.
Cite
@article{arxiv.hep-ex/0406039,
title = {Measurement of the radiative decay width \Gamma[\Lambda(1520) --> \Lambda \gamma] with the SPHINX spectrometer},
author = {Yu. M. Antipov and A. V. Artamonov and V. A. Batarin and D. V. Vavilov and V. A. Victorov and O. V. Eroshin and S. V. Golovkin and Yu. P. Gorin and V. Z. Kolganov and A. P. Kozhevnikov and A. S. Konstantinov and V. P. Kubarovsky and V. F. Kurshetsov and L. G. Landsberg and V. M. Leontiev and G. S. Lomkatsi and V. V. Molchanov and V. A. Mukhin and A. F. Nilov and D. I. Patalakha and S. V. Petrenko and V. T. Smolyankin},
journal= {arXiv preprint arXiv:hep-ex/0406039},
year = {2008}
}
Comments
More detailed treatment of systematical uncertainties, minor clarifications and corrections, significant improvements in English. 18 pages, 6 figures, accepted by Phys.Lett.B