Physics – Nuclear Physics – Nuclear Theory
Scientific paper
1997-02-06
Phys.Rev.Lett. 78 (1997) 4161-4164
Physics
Nuclear Physics
Nuclear Theory
RevTex, 8 pages. Factor ten error in cited neutron EDM corrected, discussion and two references added
Scientific paper
10.1103/PhysRevLett.78.4161
Parity-even time reversal violation (TRV) in the nucleon-nucleon interaction is reconsidered. The TRV $\rho$-exchange interaction on which recent analyses of measurements are based is necessarily also charge-symmetry breaking (CSB). Limits on its strength $\bar{g}_\rho$ relative to regular $\rho$-exchange are extracted from recent CSB experiments in neutron-proton scattering. The result $\bar{g}_\rho\le 6.7\times 10^{-3}$ (95% CL) is considerably lower than limits inferred from direct TRV tests in nuclear processes. Properties of $a_1$-exchange and limit imposed by the neutron EDM are briefly discussed.
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