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Session J10 - Electro Weak Interactions.
CONTRIBUTED session, Sunday morning, April 20
Room 5, Renaissance

[J10.06] Progress in the Search for Time Reversal Invariance Violation in Neutron Decay

L. J. Lising, S. J. Freedman, B. K. Fujikawa, E. G. Wasserman (Lawrence Berkeley National Laboratory), S. R. Elliott, R. G. H. Robertson, T. D. Steiger, J. F. Wilkerson (University of Washington), J. Adams, G. L. Jones, M. S. Dewey, J. S. Nico, A. K. Thompson, F. E. Wietfeldt (National Institute of Standards and Technology), T E. Chupp, K. P. Coulter, S.-R. Hwang (University of Michigan), A. Garcia (Notre Dame University), J. Anaya, T. J. Bowles, G. L. Greene, W. A. Teasdale (Los Alamos National Laboratory)

We report on the progress of the emiT experiment now on line at NIST's Cold Neutron Research Facility. A beam of polarized neutrons is used to measure the triple correlation of neutron spin, electron momentum, and neutrino (or proton) momentum. The existence of this correlation, the D coefficient, would be an indicator of time reversal noninvariance, and it thus serves as a sensitive probe of the electroweak interaction. The present limit on D is 10^-3, and the goal of our current run is 3\times 10^-4, a regime in which T-violation is compatible with several extensions to the Standard Model.

Part J of program listing