Universal Renormalization in Leptonic and Semileptonic Amplitudes

Sirlin, A.

doi:10.1103/PhysRevLett.32.966

Universal Renormalization in Leptonic and Semileptonic Amplitudes

A. Sirlin
(
- New York U.
)

Feb, 1974

10 pages

Published in:

Phys.Rev.Lett. 32 (1974) 966

DOI:

10.1103/PhysRevLett.32.966

Report number:

NYU/TR2/74

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Abstract: (APS)

By use of the Ward identities of current algebra, it is shown in the context of a class of SU(2)L⊗U(1) gauge models that, after renormalization of strong coupling constants and masses, the divergent part of the corrections of order α to the semileptonic and leptonic amplitudes mediated by the W meson is a universal multiple of the zeroth-order amplitude, independent of the strong interactions. Furthermore this divergent part can be absorbed by a universal renormalization of the W coupling constant g.

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Figures(0)

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