<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" altimg="si1.gif" overflow="scroll"><mml:mi>U</mml:mi><mml:msub><mml:mrow><mml:mo stretchy="false">(</mml:mo><mml:mn>1</mml:mn><mml:mo stretchy="false">)</mml:mo></mml:mrow><mml:mi>A</mml:mi></mml:msub></mml:math> symmetry in two-doublet models, U bosons or light scalars, and ψ and ϒ decays

Fayet, Pierre

doi:10.1016/j.physletb.2009.03.078

Cited by 35 publications

(16 citation statements)

References 37 publications

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“…Diagonal ALP couplings to charm quarks are strongly constrained by charmonium decays like J/ψ → aγ, as first proposed by [65] and later studied by many others, see e.g. [66][67][68][69][70][71]. The parton-level diagram prompting such decay is shown in figure 3.…”

Section: Radiative J/ψ Decaysmentioning

confidence: 74%

Charming ALPs

Carmona

Scherb

Schwaller

2021

J. High Energ. Phys.

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Axion-like particles (ALPs) are ubiquitous in models of new physics explaining some of the most pressing puzzles of the Standard Model. However, until relatively recently, little attention has been paid to its interplay with flavour. In this work, we study in detail the phenomenology of ALPs that exclusively interact with up-type quarks at the tree-level, which arise in some well-motivated ultra-violet completions such as QCD-like dark sectors or Froggatt-Nielsen type models of flavour. Our study is performed in the low-energy effective theory to highlight the key features of these scenarios in a model independent way. We derive all the existing constraints on these models and demonstrate how upcoming experiments at fixed-target facilities and the LHC can probe regions of the parameter space which are currently not excluded by cosmological and astrophysical bounds. We also emphasize how a future measurement of the currently unavailable meson decay D → π + invisible could complement these upcoming searches.

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Section: Radiative J/ψ Decaysmentioning

confidence: 74%

Charming ALPs

Carmona

Scherb

Schwaller

2021

J. High Energ. Phys.

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“…Such scenarios with a light gauge mediator have been extensively studied in the past literature [16,17,18,19,20,21]. Due to the presence of two Abelian gauge groups, U (1) Y × U (1) ′ , a kinetic mixing between the corresponding gauge fields is allowed and a new free parameter,g, is introduced beside the usual gauge coupling g ′ .…”

Section: The Beryllium Anomaly In a U (1) ′ -2hdmmentioning

confidence: 99%

Explanation of the Beryllium Anomaly in a $U(1)'$-Extended 2-Higgs Doublet Model

Rose¹,

Khalil²,

Moretti³

2018

Proceedings of the European Physical Society Conference on High Energy Physics — PoS(EPS-HEP2017)

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“…The boson could be light and weakly interacting with known particles. Most constraints for the light A -boson parameters were obtained from electron and muon anomalous magnetic moments (g − 2) and particle decay modes [4][5][6][7] .…”

Section: Introductionmentioning

confidence: 99%

Searching for a new force at VEPP-3

Wojtsekhowski,

Nikolenko,

Rachek

2012

Preprint

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We propose an experiment to search for a new gauge boson, A , in e + e − annihilation by means of a positron beam incident on a gas hydrogen target internal to the VEPP-3 storage ring. The search method is based on a missing mass spectra in the reaction e + e − → γA . It allows observation of the A signal independently of its decay modes and life time. The projected result of this experiment corresponds to an upper limit on the square of coupling constant |f eA | 2 = 1•10 −8 with a signal-to-noise ratio of five to one at an A mass of 15 MeV.

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U(1)A symmetry in two-doublet models, U bosons or light scalars, and ψ and ϒ decays

Cited by 35 publications

References 37 publications

Charming ALPs

Charming ALPs

Explanation of the Beryllium Anomaly in a $U(1)'$-Extended 2-Higgs Doublet Model

Searching for a new force at VEPP-3

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