On V_ud determination from neutron decay

Details On V_ud determination from neutron decay On V_ud determination from neutron decay

2004-11-07

arxiv.org/abs/hep-ph/0411098v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

8 pages, 1 figure included

Scientific paper

The recent results of the PIBETA experiment strongly suggest the presence of a non-(V-A) anomalous interaction in the radiative pion decay. The same interaction should inevitably contribute to the neutron decay and in particular it should affect the V_ud determination. This paper is dedicated to the prediction of the eventual discrepancy in V_ud extracted from the super-allowed Fermi transitions and from the polarized neutron decay.

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