TY - JOUR
T1 - On stringy origin of minimal flavor violation
AU - Kobayashi, Tatsuo
AU - Otsuka, Hajime
N1 - Funding Information:
We would like to thank Y. Honma, M. Tanimoto and K. Yamamoto for useful discussions and comments. H. O. was supported in part by JSPS KAKENHI Grant numbers JP19J00664 and JP20K14477.
Publisher Copyright:
© 2022, The Author(s).
PY - 2022/1
Y1 - 2022/1
N2 - We study the minimal flavor violation in the context of string effective field theory. Stringy selection rules indicate that n-point couplings among fermionic zero-modes and lightest scalar modes in the string effective action are given by a product of Yukawa couplings which are regarded as spurion fields of stringy and geometrical symmetries. Hence, Yukawa couplings determine the dynamics of flavor and CP violations. This observation strongly supports the hypothesis of minimal flavor violation in the Standard Model effective field theory.
AB - We study the minimal flavor violation in the context of string effective field theory. Stringy selection rules indicate that n-point couplings among fermionic zero-modes and lightest scalar modes in the string effective action are given by a product of Yukawa couplings which are regarded as spurion fields of stringy and geometrical symmetries. Hence, Yukawa couplings determine the dynamics of flavor and CP violations. This observation strongly supports the hypothesis of minimal flavor violation in the Standard Model effective field theory.
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U2 - 10.1140/epjc/s10052-022-09986-4
DO - 10.1140/epjc/s10052-022-09986-4
M3 - Letter
AN - SCOPUS:85122423844
VL - 82
JO - European Physical Journal C
JF - European Physical Journal C
SN - 1434-6044
IS - 1
M1 - 25
ER -