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@ARTICLE{Seng:916219,
author = {Seng, Chien-Yeah and Marciano, William J. and Meißner,
Ulf-G.},
title = {{E}lectron mass singularities in semileptonic kaon decays},
journal = {Physical review / D},
volume = {106},
number = {1},
issn = {2470-0010},
address = {Melville, NY},
publisher = {Inst.},
reportid = {FZJ-2022-06020},
pages = {013006},
year = {2022},
abstract = {We show that recent improvements in the O(α) long-distance
quantum electrodynamics (QED) corrections to the radiative
inclusive Ke3 decay rate using the Sirlin representation are
free from infrared divergences and collinear electron mass
singularities in the limit me→0, as predicted by the
Kinoshita-Lee-Nauenberg theorem. We also verify that in
massless QED with the simultaneous dimensional
regularization of QED photon infrared divergences and
electron mass singularities leads to the same result for the
inclusive rate in the limit of four space-time dimensions.
The equivalence of the two approaches results in part from
an interesting interplay between a small chirality-breaking
effect in the massless electron limit and the generalization
of space-time algebra and phase space integrals to d>4
dimensions. Our finding supports the small theoretical
uncertainty claimed for Ke3 radiative inclusive rates and
reaffirms its utility in precision unitarity tests of the
quark mixing matrix.},
cin = {IAS-4 / IKP-3},
ddc = {530},
cid = {I:(DE-Juel1)IAS-4-20090406 / I:(DE-Juel1)IKP-3-20111104},
pnm = {5111 - Domain-Specific Simulation Data Life Cycle Labs
(SDLs) and Research Groups (POF4-511) / DFG project
196253076 - TRR 110: Symmetrien und Strukturbildung in der
Quantenchromodynamik (196253076)},
pid = {G:(DE-HGF)POF4-5111 / G:(GEPRIS)196253076},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000878510200001},
doi = {10.1103/PhysRevD.106.013006},
url = {https://juser.fz-juelich.de/record/916219},
}