Resolving the flavor structure in the MFV-SMEFT
Resolving the flavor structure in the MFV-SMEFT
复制标题
解析 MFV-SMEFT 中的风味结构
DOI:
10.1007/jhep02(2023)225
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发表时间:
2023
期刊:
影响因子:
--
通讯作者:
Bruggisser Sebastian
中科院分区:
文献类型:
--
作者:
Bruggisser Sebastian
We constrain the flavor structure of Wilson coefficients in the Standard Model Effective Field Theory (SMEFT) from data. In the SMEFT, new physics effects in couplings of up-type and down-type quarks are related through the Cabibbo-Kobayashi-Maskawa mixing matrix. We exploit this relation to pin down potential new sources of flavor symmetry breaking in a global analysis of high-and low-energy data from the LHC, LEP, and b factory experiments. We demonstrate the power of such an analysis by performing a combined fit of effective four-quark and two-quark couplings contributing to a large set of flavor, top-quark, electroweak, and dijet observables. All four sectors are needed to fully resolve the flavor structure of left-chiral four-quark couplings without leaving blind directions in the parameter space. Although we work in the framework of minimal flavor violation, our strategy applies as well to other flavor patterns, like U (2) flavor symmetry or leptoquark scenarios.
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