Searching for flavor-violating ALPs in Higgs boson decays

Davoudiasl, Hooman; Marcarelli, Roman; Miesch, Nicholas; Neil, Ethan T.

doi:10.1103/physrevd.104.055022

Cited by 15 publications

(15 citation statements)

References 44 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…For example, similar constraints were found for a universal a coupling by analyzing Higgs decays at the LHC in Ref. [6]. These constraints are notably weakened as the ALP-Higgs coupling was decreased, whereas the limits from the EIC would remain unaffected.…”

Section: Discussionsupporting

confidence: 66%

See 1 more Smart Citation

Lepton-Flavor-Violating ALPs at the Electron-Ion Collider: A Golden Opportunity

Davoudiasl¹,

Marcarelli²,

Neil³

2021

Preprint

Self Cite

View full text Add to dashboard Cite

Axion-like particles (ALPs) arise in a variety of theoretical contexts and can, in general, mediate flavor violating interactions and parity non-conservation. We consider lepton flavor violating ALPs with GeV scale or larger masses which may, for example, arise in composite dark sector models. We show that a future Electron-Ion Collider (EIC) can uncover or constrain such ALPs via processes of the type e AZ → τ AZ a, where AZ is a nucleus of charge Z and a is an ALP, over a significant part of the relevant parameter space. The production of the ALP can have a large Z 2 enhancement from low Q 2 electromagnetic scattering of the electron from a heavy ion. Using the gold nucleus (Z = 79) as an example, we show that the EIC can explore e − τ flavor violation, mediated by GeV-scale ALPs, well beyond current limits. We also discuss how the EIC electron beam polarization can provide a powerful tool for investigating parity violating ALPs.

show abstract

Section: Discussionsupporting

confidence: 66%

“…The GeV mass scale for ALPs was studied in the lepton flavor violating but parity preserving limit in Ref. [6]. However, one could generally assume that parity violation is present in the low energy effective field theory (EFT) describing the interactions of ALPs with the SM; we will consider this more general case here.…”

Section: Introductionmentioning

confidence: 99%

Lepton-Flavor-Violating ALPs at the Electron-Ion Collider: A Golden Opportunity

Davoudiasl¹,

Marcarelli²,

Neil³

2021

Preprint

Self Cite

View full text Add to dashboard Cite

show abstract

“…aΦ has been previously considered in [58][59][60][61] and it is the only shift-invariant operator 2 that can be constructed at dimension 6. SMEFT operators of dimension 6 are neglected: we assume them to be suppressed by a scale Λ SMEFT = f a and work consistently at order (f −2 a Λ 0 SMEFT ).…”

Section: The Operator Omentioning

confidence: 99%

Unitarity constraints on ALP interactions

Brivio,

Éboli,

Gonzalez-Garcia

2021

Preprint

View full text Add to dashboard Cite

We derive partial-wave unitarity constraints on gauge-invariant interactions of an Axion-Like Particle (ALP) up to dimension-6 from all allowed 2 → 2 scattering processes in the limit of large center-of-mass energy. We find that the strongest bounds stem from scattering amplitudes with one external ALP and only apply to the coupling to a pair of SU (2)L gauge bosons. Couplings to U (1)Y and SU (3)C gauge bosons and to fermions are more loosely constrained.

show abstract

“…In this paper, given the current situation, we attempt to enlarge the availability of beam dump experiments for the extended scenarios. We are especially interested in extensions including Charged Lepton Flavor Violation (CLFV) [46][47][48][49][50][51][52][53]. As is well known, CLFV is one of the most evident signals for new physics beyond the SM.…”

Section: Introductionmentioning

confidence: 99%

Electron beam dump constraints on light bosons with lepton flavor violating couplings

Araki

Asai

Shimomura

2021

J. High Energ. Phys.

View full text Add to dashboard Cite

We study constraints on light and feebly interacting bosons having charged lepton flavor violating couplings from electron beam dump experiments. Scalar, pseudoscalar, vector, and dipole type interactions of the bosons are analyzed, and excluded regions from the searches for decays into electron-positron pairs are derived. It is found that parameter regions unconstrained by flavor violating decays of muon can be excluded using the results of the E137 experiment. We also discuss the impact of the search for flavor violating decays of the light bosons in electron beam dump experiments.

show abstract

Searching for flavor-violating ALPs in Higgs boson decays

Cited by 15 publications

References 44 publications

Lepton-Flavor-Violating ALPs at the Electron-Ion Collider: A Golden Opportunity

Lepton-Flavor-Violating ALPs at the Electron-Ion Collider: A Golden Opportunity

Unitarity constraints on ALP interactions

Electron beam dump constraints on light bosons with lepton flavor violating couplings

Contact Info

Product

Resources

About