38 research outputs found
violation in muonic decays
In this study, we investigate the imprints of violation in certain
muonic decays that could arise within the Standard Model effective field
theory. In particular, we study the sensitivities that could be reached at
REDTOP, a proposed facility. After estimating the bounds that the
neutron EDM places, we find still viable to discover signals of
violation via the muons' polarization in decays at REDTOP,
with a single effective operator as its plausible source.Comment: 18 pages, 5 figures. Matches the published version in JHEP; contains
minor changes in Appendix
and transition form factors from Pad\'e approximants
We employ a systematic and model-independent method to extract, from space-
and time-like data, the and transition form factors (TFFs)
obtaining the most precise determination for their low-energy parameters and
discuss the impact on them. Using TFF
data alone, we also extract the mixing parameters, which are
compatible to those obtained from more sophisticated and input-demanding
procedures.Comment: 4 pages, 2 figures, presented at the 13th International Workshop on
Meson Production, Properties and Interaction (MESON 2014); added reference