Article Title

Time reversal in polarized neutron decay: The emiT experiment

Type of Work

Article

Date

2-11-2000

Journal Title

Nuclear Instruments & Methods in Physics Research Section A-Accelerators Spectrometers Detectors and Associated Equipment

Journal ISSN

0168-9002

Journal Volume

440

Journal Issue

3

First Page

648

Last Page

652

DOI

10.1016/S0168-9002(99)01056-6

Abstract

The standard electro-weak model predicts negligible violation of time-reversal invariance in light quark processes. We report on an experimental test of time-reversal invariance in the beta decay of polarized neutrons as a search for physics beyond the standard model. The emiT collaboration has measured the time-reversal-violating triple-correlation in neutron beta decay between the neutron spin, electron momentum, and neutrino momentum often referred to as the D coefficient. The first run of the experiment produced 14 million events which are currently being analyzed. However, a second run with improved detectors should provide greater statistical precision and reduced systematic uncertainties. (C) 2000 Elsevier Science B.V. All rights reserved.

Hamilton Areas of Study

Physics