Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2000-06-23
Phys.Rev.D63:014025,2001
Physics
High Energy Physics
High Energy Physics - Phenomenology
29 pages, no figures, REVTEX
Scientific paper
10.1103/PhysRevD.63.014025
We obtain a model-independent expression for the Dalitz plot of semileptonic decays of polarized hyperons including radiative corrections to order alpha and neglecting terms of order (alpha q)/(pi M_1), where q is the four-momentum transfer and M_1 is the mass of the decaying hyperon. We specialize our results to exhibit the correlation between the charged-lepton momentum and the spin of the decaying hyperon. We present results for the three-body region of the Dalitz plot and for the complete Dalitz plot (which includes the four-body region). From these results we also obtain the corresponding radiative corrections to the integrated lepton spin-asymmetry coefficient. Our formulas are valid for charged as well as for neutral decaying hyperons and are appropriate for model-independent experimental analysis whether the real photon is discriminated or not.
Flores-Mendieta Ruben
Garcia Arnaldo
Martínez Alan
Torres Javier
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