Measurement of CP Violation at the $\Upsilon(4S)$ without Time Ordering or $\Delta t$
High Energy Physics - Phenomenology
2009-12-30 v1
Abstract
I derive the expressions for the CP-violating asymmetry arising from interference between mixed and direct decays in the Upsilon(4S) system, for the case in which only one of the B decay times is observed, integrating over the decay time of the other B. I observe that neither the difference of the decay times Delta t, nor even their time-ordering, need be detected. A technique for measurement of the CP-violating weak decay parameter sin(2beta) is described which exploits this observation.
Cite
@article{arxiv.hep-ph/9907277,
title = {Measurement of CP Violation at the $\Upsilon(4S)$ without Time Ordering or $\Delta t$},
author = {A. Foland},
journal= {arXiv preprint arXiv:hep-ph/9907277},
year = {2009}
}
Comments
9 pages postscript, also available through http://w4.lns.cornell.edu/public/CLNS