11 Result(s)
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Article
Open AccessA class of invisible axion models with FCNCs at tree level
We build a class of invisible axion models with tree-level Flavor Changing Neutral Currents completely controlled by the fermion mixing matrices. The scalar sector of these models contains three-Higgs doublets...
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Article
Open AccessIntegrating out heavy particles with functional methods: a simplified framework
We present a systematic procedure to obtain the one-loop low-energy effective Lagrangian resulting from integrating out the heavy fields of a given ultraviolet theory. We show that the matching coefficients ar...
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Article
Open AccessPhenomenology of an SU(2) × SU(2) × U(1) model with lepton-flavour non-universality
We investigate a gauge extension of the Standard Model in light of the observed hints of lepton universality violation in b → cℓν and b → sℓ + ℓ ...
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Open AccessLow-energy signatures of the PS3 model: from B-physics anomalies to LFV
The three-site Pati-Salam gauge model provides a consistent description for the hints of lepton-flavor non-universality observed in B decays, connecting the present pattern of “anomalies” to the origin of the Sta...
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Open AccessRevisiting the vector leptoquark explanation of the B-physics anomalies
We present a thorough investigation of the vector leptoquark hypothesis for a combined explanation of the B-physics anomalies. We analyze this hypothesis from a twofold perspective, taking into account recent res...
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Open AccessCharm physics confronts high-pT lepton tails
We present a systematic survey of possible short-distance new-physics effects in (semi)leptonic charged- and neutral-current charmed meson decays. Using the Standard Model Effective Field Theory (SMEFT) to ana...
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Article
Open AccessSuperTracer: a calculator of functional supertraces for one-loop EFT matching
We present SuperTracer, a Mathematica package aimed at facilitating the functional matching procedure for generic UV models. This package automates the most tedious parts of one-loop functional matching comput...
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Open AccessReading the footprints of the B-meson flavor anomalies
Motivated by the recent LHCb announcement of a 3.1σ violation of lepton- flavor universality in the ratio RK = Γ(B → Kμ+μ−)/Γ(B → Ke+e−), we present an updated, comprehensive analysis of the flavor anomalies seen...
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Open AccessEvanescent operators in one-loop matching computations
Effective Field Theory calculations used in countless phenomenological analyses employ dimensional regularization, and at intermediate stages of computations, the operator bases extend beyond the four-dimensio...
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Open AccessA global analysis of axion-like particle interactions using SMEFT fits
In the presence of axions or axion-like particles (ALPs) that couple to the Standard Model via dimension-five interactions, dimension-six SMEFT interactions are generated via renormalization-group evolution. A...
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Article
Open AccessDeconstructing flavor anomalously
Flavor deconstruction refers to ultraviolet completions of the Standard Model where the gauge group is split into multiple factors under which fermions transform non-universally. We propose a mechanism for cha...
