abstract

• We obtain a model-independent expression for the Dalitz plot of semileptonic decays of polarized hyperons including radiative corrections to order α and neglecting terms of order αq/πM1, where q is the four-momentum transfer and M1 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 analyses whether the real photon is discriminated or not. ©2000 The American Physical Society.

authors

• Flores Mendieta Rubén
• García A.
• Martínez A.
• Torres J.J.

publication date

• 2001-01-01

published in

• Physical Review D  Journal

Digital Object Identifier (DOI)

• 10.1103/PhysRevD.63.014025

start page

end page

volume

• 63

issue

• 1