Determination of the total width of the eta' meson
Nuclear Experiment
2010-09-28 v2
Abstract
Taking advantage of both the low-emittance proton-beam of the Cooler Synchrotron COSY and the high momentum precision of the COSY-11 detector system, the mass distribution of the eta' meson was measured with a resolution of 0.33 MeV/c^2 (FWHM), improving the experimental mass resolution by almost an order of magnitude with respect to previous results. Based on the sample of more than 2300 reconstructed pp --> pp eta' events the total width of the eta' meson was determined to be 0.226 +- 0.017(stat.) +- 0.014(syst.) MeV/c^2.
Cite
@article{arxiv.1008.5294,
title = {Determination of the total width of the eta' meson},
author = {E. Czerwinski and P. Moskal and D. Grzonka and R. Czyzykiewicz and D. Gil and B. Kamys and A. Khoukaz and J. Klaja and P. Klaja and W. Krzemien and W. Oelert and J. Ritman and T. Sefzick and M. Siemaszko and M. Silarski and J. Smyrski and A. Taschner and M. Wolke and P. Wustner and J. Zdebik and M. Zielinski and W. Zipper},
journal= {arXiv preprint arXiv:1008.5294},
year = {2010}
}
Comments
4 pages, 4 figures