Absolute Branching Ratio Normalization for Rare pi+ and mu+ Decays in the PIBETA Experiment
Abstract
We have used the PIBETA detector at the PSI for a precise measurement of rare pion and muon weak decays. We have collected a large statistical sample of (1) pi+ -> e+ nu, (2) pi+ -> pi0 e+ nu, (3) pi+ -> e+ nu gamma, (4) mu+ -> e+ nu nu, and (5) mu+ -> e+ nu nu gamma decays. We have evaluated the absolute branching ratios for these processes by normalizing to the independently measured number of decaying pi+'s (or mu+'s). We discuss the mutual consistency of the preliminary results.
Cite
@article{arxiv.hep-ex/0312025,
title = {Absolute Branching Ratio Normalization for Rare pi+ and mu+ Decays in the PIBETA Experiment},
author = {E. Frlez},
journal= {arXiv preprint arXiv:hep-ex/0312025},
year = {2019}
}
Comments
5 pages, 6 Postscript figures, 1 table, RevTeX4; To appear in Fizika B, in the Proceedings of the Second International Conference on Nuclear and Particle Physics with CEBAF at Jefferson Laboratory (NAPP 2003), Dubrovnik, Croatia, 26-31 May, 2003. Version 2 corrects typos in Table I E-8 -> E-7 in R_RPD(B,C)