Testing Time-Reversal: Lambda_b Decays into Polarized Resonances

2007/02/23 by Z. J. Ajaltouni, Ajaltouni, Z. J., E. Di Salvo +3
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #hep-ph

paper · pdf · doi:10.48550/arxiv.hep-ph/0702240

11 pages, 3 figures, 1 table. Submitted to Phys. Lett. B

arxiv created 2007/02/23 · arxiv updated 2009/12/01

Abstract

Weak decays of beauty baryons like Lambda_b into Lambda V(J^P=1^-), where the produced resonances are polarized, offer interesting opportunity to perform tests of Time-Reversal Invariance. This paper emphasizes the particular role of the resonance polarization-vectors and their physical properties by symmetry transformations. In particular, it is shown that the normal component of a polarization-vector, as defined in the Jackson's frame, is Lorentz invariant and could get large values, notably in the case of J/psi production.

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