A robust description of hadronic decays in light vector mediator models

Foguel, Ana Luisa; Reimitz, Peter; Funchal, R. Zukanovich

doi:10.1007/jhep04(2022)119

Cited by 10 publications

(9 citation statements)

References 123 publications

(168 reference statements)

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“…For a detailed description of all possible hadronic currents including their form factors we refer to ref. [38]. In the mediator mass range up to 1.5 GeV, 1 the dominant hadronic channels are πγ, 2π, 3π, 4π, KK, KKπ, ηγ, ηππ, ωπ, ωππ, φπ, ηω, and ηφ.…”

Section: Jcap11(2022)033mentioning

confidence: 98%

“…[4,26] for the ChPT and refs. [24,38] for VMD, and focus on a smooth and consistent transition between the two regimes.…”

Section: Hazma and Herwig4dmmentioning

confidence: 99%

“…This is why we can use e + e − annihilation data to fit the hadronic currents J µ H precisely. All we need to do is change the matrix element of the process by replacing the leptonic current L µ with the polarization vector of the mediator ε * (V ) [38]…”

Section: Jcap11(2022)033mentioning

confidence: 99%

See 2 more Smart Citations

Hazma meets HERWIG4DM: precision gamma-ray, neutrino, and positron spectra for light dark matter

Coogan

Morrison

Plehn

et al. 2022

J. Cosmol. Astropart. Phys.

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We present a new open-source package, Hazma 2, that computes accurate spectra relevant for indirect dark matter searches for photon, neutrino, and positron production from vector-mediated dark matter annihilation and for spin-one dark matter decay. The tool bridges across the regimes of validity of two state of the art codes: Hazma 1, which provides an accurate description below hadronic resonances up to center-of-mass energies around 250 MeV, and Herwig4DM, which is based on vector meson dominance and measured form factors, and accurate well into the few GeV range. The applicability of the combined code extends to approximately 1.5 GeV, above which the number of final state hadrons off of which we individually compute the photon, neutrino, and positron yield grows exceedingly rapidly. We provide example branching ratios, particle spectra and conservative observational constraints from existing gamma-ray data for the well-motivated cases of decaying dark photon dark matter and vector-mediated fermionic dark matter annihilation. Finally, we compare our results to other existing codes at the boundaries of their respective ranges of applicability. Hazma 2 is freely available on GitHub at https://github.com/LoganAMorrison/Hazma.

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Section: Jcap11(2022)033mentioning

confidence: 98%

“…[4,26] for the ChPT and refs. [24,38] for VMD, and focus on a smooth and consistent transition between the two regimes.…”

Section: Hazma and Herwig4dmmentioning

confidence: 99%

See 1 more Smart Citation

Hazma meets HERWIG4DM: precision gamma-ray, neutrino, and positron spectra for light dark matter

Coogan

Morrison

Plehn

et al. 2022

J. Cosmol. Astropart. Phys.

Self Cite

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show abstract

“…The e + e − → hadrons data along with SU(3) flavor symmetry is of great use in this regard. Two successful examples are determining the hadronic rates of new spin-1 bosons with vectorial coupling, see DarkCast [85] and [88] for recent progress; and determining the hadronic rates of pseudoscalars [89], see also [90], where additionally crossing symmetry plays an important role.…”

Section: Jhep11(2022)124mentioning

confidence: 99%

Axial vectors in DarkCast

Baruch

Ilten

Soreq

et al. 2022

J. High Energ. Phys.

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In this work, we explore new spin-1 states with axial couplings to the standard model fermions. We develop a data-driven method to estimate their hadronic decay rates based on data from τ decays and using SU(3)flavor symmetry. We derive the current and future experimental constraints for several benchmark models. Our framework is generic and can be used for models with arbitrary vectorial and axial couplings to quarks. We have made our calculations publicly available by incorporating them into the DarkCast package, see https://gitlab.com/darkcast/releases.

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“…Here QCD denotes hadrons when mS 2 GeV and quarks and gluons for higher masses. The low-energy width to hadrons was taken from[21].5 For a recent evaluation of these hadronic decays, see for instance ref [22]…”

mentioning

confidence: 99%

(In)Visible signatures of the minimal dark abelian gauge sector

Foguel

Salla

Funchal

2022

J. High Energ. Phys.

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In this paper we study the present and future sensitivities of the rare meson decay facilities KOTO, LHCb and Belle II to a light dark sector of the minimal dark abelian gauge symmetry where a dark Higgs S and a dark photon ZD have masses ≲ 10 GeV. We have explored the interesting scenario where S can only decay to a pair of ZD’s and so contribute to visible or invisible signatures, depending on the life-time of the latter. Our computations show that these accelerator experiments can access the dark Higgs (mass and scalar mixing) and the dark photon (mass and kinetic mixing) parameters in a complementary way. We have also discussed how the CMS measurement of the SM Higgs total decay width and their limit on the Higgs invisible branching ratio can be used to extend the experimental reach to dark photon masses up to ~ 10 GeV, providing at the same time sensitivity to the gauge coupling associated with the broken dark abelian symmetry.

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A robust description of hadronic decays in light vector mediator models

Cited by 10 publications

References 123 publications

Hazma meets HERWIG4DM: precision gamma-ray, neutrino, and positron spectra for light dark matter

Hazma meets HERWIG4DM: precision gamma-ray, neutrino, and positron spectra for light dark matter

Axial vectors in DarkCast

(In)Visible signatures of the minimal dark abelian gauge sector

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