Precise Measurement of pi+ -> e+ nu Branching Ratio
High Energy Physics - Experiment
2015-05-13 v1
Abstract
The PEN Collaboration is conducting a new measurement of the pi+ -> e+ nu branching ratio at the Paul Scherrer Institute, with the goal uncertainty of delta B/B(pie2)=5E-4 or lower. At present, the combined accuracy of all published pie2 decay measurements lags behind the theoretical calculation by a factor of 40. In this contribution we report on the PEN detector configuration and its performance during two development runs done in 2007 and 2008.
Cite
@article{arxiv.0812.2829,
title = {Precise Measurement of pi+ -> e+ nu Branching Ratio},
author = {E. Frlež and L. P. Alonzi and V. A. Baranov and W. Bertl and M. Bychkov and Yu. M. Bystritsky and N. V. Khomutov and A. S. Korenchenko and S. M. Korenchenko and M. Korolija and T. Kozlowski and N. P. Kravchuk and N. A. Kuchinsky and D. Mekterović and D. Mzhavia and A. Palladino and D. Počanić and P. Robmann and A. M. Rozhdestvensky and V. V. Sidorkin and U. Straumann and I. Supek and P. Truöl and A. van der Schaaf and E. P. Velicheva and V. P. Volnykh},
journal= {arXiv preprint arXiv:0812.2829},
year = {2015}
}
Comments
pdflatex, 11 pages, 5 figures, to be published in "Progress in High-Energy Physics and Nuclear Safety", NATO Science for Peace Series: B - Physics and Biophysics