TY - JOUR
T1 - New-physics signatures via CP violation in
η
(0) → π
0µ
+µ
− and η
0 → ηµ+µ
− decays
AU - Escribano, Rafel
AU - Royo, Emilio
AU - Sanchez-Puertas, Pablo
N1 - Publisher Copyright:
© 2022, The Author(s).
PY - 2022/5/23
Y1 - 2022/5/23
N2 - In this work we investigate the prospect of observing new-physics signatures via CP violation in eta((')) -> pi(0) mu(+) mu(-) and eta'-> eta mu(+) mu(-) decays at the REDTOP experiment. We make use of the SMEFT to parametrise the new-physics CP-violating effects and find that the projected REDTOP statistics are not competitive with respect to nEDM experiments. This reasserts the eta -> mu(+) mu(-) process as the most promising channel to find CP-violation at this experimental facility.
AB - In this work we investigate the prospect of observing new-physics signatures via CP violation in eta((')) -> pi(0) mu(+) mu(-) and eta'-> eta mu(+) mu(-) decays at the REDTOP experiment. We make use of the SMEFT to parametrise the new-physics CP-violating effects and find that the projected REDTOP statistics are not competitive with respect to nEDM experiments. This reasserts the eta -> mu(+) mu(-) process as the most promising channel to find CP-violation at this experimental facility.
KW - CP Violation
KW - Chiral Lagrangian
KW - Smeft
KW - Semi-Leptonic Decays
UR - https://www.scopus.com/pages/publications/85130729061
U2 - 10.1007/JHEP05(2022)147
DO - 10.1007/JHEP05(2022)147
M3 - Article
AN - SCOPUS:85130729061
SN - 1029-8479
VL - 2022
JO - Journal of High Energy Physics
JF - Journal of High Energy Physics
IS - 5
M1 - 147
ER -