TY  - JOUR
AU  - Falkowski, A.
AU  - Gonzalez-Alonso, M.
AU  - Naviliat-Cuncic, O.
PY  - 2021
DA  - 2021//
TI  - Comprehensive analysis of beta decays within and beyond the Standard Model
T2  - J. High Energy Phys.
JO  - Journal of High Energy Physics
SP  - 126
EP  - 36pp
VL  - 04
IS  - 4
PB  - Springer
KW  - Effective Field Theories
KW  - Beyond Standard Model
KW  - Quark Masses and SM Parameters
AB  - Precision measurements in allowed nuclear beta decays and neutron decay are reviewed and analyzed both within the Standard Model and looking for new physics. The analysis incorporates the most recent experimental and theoretical developments. The results are interpreted in terms of Wilson coefficients describing the effective interactions between leptons and nucleons (or quarks) that are responsible for beta decay. New global fits are performed incorporating a comprehensive list of precision measurements in neutron decay, superallowed 0(+)-> 0(+) transitions, and other nuclear decays that include, for the first time, data from mirror beta transitions. The results confirm the V-A character of the interaction and translate into updated values for V-ud and g(A) at the 10(-4) level. We also place new stringent limits on exotic couplings involving left-handed and right-handed neutrinos, which benefit significantly from the inclusion of mirror decays in the analysis.
SN  - 1029-8479
UR  - https://arxiv.org/abs/2010.13797
UR  - https://doi.org/10.1007/JHEP04(2021)126
DO  - 10.1007/JHEP04(2021)126
LA  - English
N1  - WOS:000640519700002
ID  - Falkowski_etal2021
ER  -