Simple model for large CP violation in charm decays, B-physics anomalies, muon g − 2 and dark matter

Li, Tianjun; Liu, Ying; Zhu, Bin

doi:10.1007/jhep10(2020)070

Cited by 25 publications

(14 citation statements)

References 85 publications

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“…To the best of our knowledge, the model that here we call S Ib , belonging to this class, is the only example of this kind of models addressing DM, muon g − 2 and B anomalies which has been already discussed in the literature in Ref. [61].…”

Section: Minimal Modelsmentioning

confidence: 96%

Muon $g-2$ and $B$-anomalies from Dark Matter

Arcadi,

Calibbi,

Fedele

et al. 2021

Preprint

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In the light of the recent result of the Muon g-2 experiment and the update on the test of lepton flavour universality R K published by the LHCb collaboration, we systematically build and discuss a set of models with minimal field content that can simultaneously give: (i) a thermal Dark Matter candidate; (ii) large loop contributions to b → s processes able to address R K and the other B anomalies; (iii) a natural solution to the muon g − 2 discrepancy through chirally-enhanced contributions.

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Section: Minimal Modelsmentioning

confidence: 96%

Muon $g-2$ and $B$-anomalies from Dark Matter

Arcadi,

Calibbi,

Fedele

et al. 2021

Preprint

Self Cite

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“…Depending on the choice of representations, some of the EW Scenarios we consider were previously studied in Refs. [39][40][41][42][79][80][81]. There have also been previous attempts to define simplified model dictionaries for generating ∆a obs µ [36,37,39,41,42,[82][83][84][85], but none took our completely model-exhaustive approach and none aimed to find the highest possible mass of new BSM charged states that could account for ∆a obs µ .…”

Section: Electroweak Scenariosmentioning

confidence: 99%

A No-Lose Theorem for Discovering the New Physics of $(g-2)_μ$ at Muon Colliders

Capdevilla,

Curtin,

Kahn

et al. 2021

Preprint

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We perform a model-exhaustive analysis of all possible beyond Standard Model (BSM) solutions to the (g − 2) µ anomaly to study production of the associated new states at future muon colliders, and formulate a no-lose theorem for the discovery of new physics if the anomaly is confirmed and weakly coupled solutions below the GeV scale are excluded. Our goal is to find the highest possible mass scale of new physics subject only to perturbative unitarity, and optionally the requirements of minimum flavour violation (MFV) and/or naturalness. We prove that a 3 TeV muon collider is guaranteed to discover all BSM scenarios in which ∆a µ is generated by SM singlets with masses above ∼ GeV; lighter singlets will be discovered by upcoming low-energy experiments. If new states with electroweak quantum numbers contribute to (g − 2) µ , the minimal requirements of perturbative unitarity guarantee new charged states below O(100 TeV), but this is strongly disfavoured by stringent constraints on charged lepton flavour violating (CLFV) decays. Reasonable BSM theories that satisfy CLFV bounds by obeying Minimal Flavour Violation (MFV) and avoid generating two new hierarchy problems require the existence of at least one new charged state below ∼ 10 − 20 TeV. This strongly motivates the construction of highenergy muon colliders, which are guaranteed to discover new physics: either by producing these new charged states directly, or by setting a strong lower bound on their mass, which would empirically prove that the universe is fine-tuned and violates the assumptions of MFV while somehow not generating large CLFVs. The former case is obviously the desired outcome, but the latter scenario would perhaps teach us even more about the universe by profoundly revising our understanding of naturalness, cosmological vacuum selection, and the SM flavour puzzle.

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“…Such models require at least two new physics fields, in order to have the large chirality flip possible on the internal line. Examples of models of this type include: muophilic dark matter running in the loop [255][256][257][258][259][260][261][262][263], contributions from ALPs coupling to heavy vectorlike leptons [264], anomalous Z [265,266], singlet scalars [265,266], low energy supersymmetry [267][268][269][270][271][272], extended Higgs sectors [273][274][275][276], radiative models for charged fermion or neutrino masses [166,[277][278][279]. There may also be a relation with B anomalies [280][281][282][283][284][285], while implications for Higgs physics were discussed in [134,[286][287][288][289][290].…”

Section: Anomalous Magnetic Moment Of the Muonmentioning

confidence: 99%

Snowmass White Paper: Flavor Model Building

Altmannshofer¹,

Zupan²

2022

Preprint

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In this white paper for the Snowmass process, we summarize the role flavor model building plays in the quest for new physics. We review approaches to address the non-generic flavor structure of the Standard Model and discuss how new physics models can be made compatible with the stringent constraints from flavor changing processes that indirectly probe very high scales. We also give an overview of the persistent anomalies in B decays and the anomalous magnetic moment of the muon and some of their most popular new physics explanations.

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Simple model for large CP violation in charm decays, B-physics anomalies, muon g − 2 and dark matter

Cited by 25 publications

References 85 publications

Muon $g-2$ and $B$-anomalies from Dark Matter

Muon $g-2$ and $B$-anomalies from Dark Matter

A No-Lose Theorem for Discovering the New Physics of $(g-2)_μ$ at Muon Colliders

Snowmass White Paper: Flavor Model Building

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