利用 MAMI-B 的 Crystal Ball 测定 eta->3pi^0 衰变的 Dalitz 图参数 alpha
高能物理 - 实验
2009-05-05 v2
摘要
本文报告了对 eta->3pi^0 衰变的 Dalitz 图参数 alpha 的精确测量。该实验是在美因茨的 MAMI-B 电子加速器的标记光子束流设施上，利用 Crystal Ball 和 TAPS 大接收度光子探测器进行的。获得了 1.8*10^6 个 eta->3pi^0 事例的高统计量，给出结果 alpha = -0.032 +/- 0.002(stat) +/- 0.002(syst)。
引用
@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}
}
备注
9 pages, 6 figures, published in the online-first section of EPJ A, included changes referees asked for, added DOI