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- W4200048246 abstract "In addition to the existing strong indications for lepton flavor universality violation in low-energy precision experiments, the CMS Collaboration at CERN recently released an analysis of nonresonant dilepton pairs which could constitute the first sign of lepton flavor universality violation in high-energy searches at the LHC. In this article, we show that the Cabibbo-angle anomaly, an (apparent) violation of first row and column Cabibbo-Kobayashi-Maskawa (CKM) matrix unitarity with $ensuremath{approx}3ensuremath{sigma}$ significance, and the CMS result can be correlated and commonly explained in a model-independent way by the operator $[{Q}_{ensuremath{ell}q}^{(3)}{]}_{1111}=({overline{ensuremath{ell}}}_{1}{ensuremath{gamma}}^{ensuremath{mu}}{ensuremath{sigma}}^{I}{ensuremath{ell}}_{1})({overline{q}}_{1}{ensuremath{gamma}}_{ensuremath{mu}}{ensuremath{sigma}}^{I}{q}_{1})$. This is possible without violating the bounds from the nonresonant dilepton search of ATLAS (which interestingly also observed slightly more events than expected in the electron channel) nor from $R(ensuremath{pi})=ensuremath{pi}ensuremath{rightarrow}ensuremath{mu}ensuremath{nu}/ensuremath{pi}ensuremath{rightarrow}eensuremath{nu}$. We find a combined preference for the new physics hypothesis of $4.5ensuremath{sigma}$ and predict $1.0004<R(ensuremath{pi})<1.0009$ (95% C.L.) which can be tested in the near future with the forthcoming results of the PEN experiment." @default.
- W4200048246 created "2021-12-31" @default.
- W4200048246 creator A5035388118 @default.
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- W4200048246 date "2021-12-14" @default.
- W4200048246 modified "2023-10-06" @default.
- W4200048246 title "Correlating nonresonant di-electron searches at the LHC to the Cabibbo-angle anomaly and lepton flavor universality violation" @default.
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- W4200048246 doi "https://doi.org/10.1103/physrevd.104.115016" @default.
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