Determination of the Dalitz plot parameter alpha for the decay eta->3pi^0 with the Crystal Ball at MAMI-B
High Energy Physics - Experiment
2009-05-05 v2
Abstract
A precise measurement of the Dalitz plot parameter, alpha, for the eta->3pi^0 decay is presented. The experiment was performed with the Crystal Ball and TAPS large acceptance photon detectors at the tagged photon beam facility of the MAMI-B electron accelerator in Mainz. High statistics of 1.8*10^6 eta->3pi^0 events were obtained, giving the result alpha = -0.032 +/- 0.002(stat) +/- 0.002(syst).
Cite
@article{arxiv.0812.3324,
title = {Determination of the Dalitz plot parameter alpha for the decay eta->3pi^0 with the Crystal Ball at MAMI-B},
author = {M. Unverzagt and P. Aguar-Bartolome and J. Ahrens and J. R. M. Annand and H. J. Arends and R. Beck and V. Bekrenev and B. Boillat and A. Braghieri and D. Branford and W. J. Briscoe and J. W. Brudvik and S. Cherepnya and R. Codling and E. J. Downie and L. V. Filkov and D. I. Glazier and R. Gregor and E. Heid and D. Hornidge and O. Jahn and V. L. Kashevarov and R. Kondratiev and M. Korolija and M. Kotulla and D. Krambrich and B. Krusche and M. Lang and V. Lisin and K. Livingston and S. Lugert and I. J. D. MacGregor and D. M. Manley and M. Martinez-Fabregate and J. C. McGeorge and D. Mekterovic and V. Metag and B. M. K. Nefkens and A. Nikolaev and R. Novotny and R. O. Owens and P. Pedroni and A. Polonski and S. N. Prakhov and J. W. Price and G. Rosner and M. Rost and T. Rostomyan and S. Schumann and D. Sober and A. Starostin and I. Supek and C. M. Tarbert and A. Thomas and Th. Walcher and D. P. Watts and F. Zehr},
journal= {arXiv preprint arXiv:0812.3324},
year = {2009}
}
Comments
9 pages, 6 figures, published in the online-first section of EPJ A, included changes referees asked for, added DOI