Jets and photons spectroscopy of Higgs-ALP interactions

Alves, Alexandre; Dias, Alex G.; Lopes, Daniel de Queiroz

doi:10.1007/jhep10(2021)012

Cited by 4 publications

(2 citation statements)

References 46 publications

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“…In this paper, we study ALP contributions to decay widths of the Higgs boson (h). In literature, direct ALP productions from Higgs boson decays, e.g., h → Za and h → aa, JHEP11(2023)046 have often been discussed [4,[21][22][23][24]. Those channels are open when the ALP is lighter than the Higgs boson.…”

Section: Introductionmentioning

confidence: 99%

Higgs probes of axion-like particles

Aiko,

Endo

2023

J. High Energ. Phys.

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We study axion-like particle contributions to the Higgs boson decays. The particle is assumed to couple with the standard model electroweak gauge bosons. Although direct productions of axion-like particles have often been discussed, we investigate indirect contributions to the Higgs boson decays into fermions, photons, W, and Z bosons at the one-loop level. It is found that the corrections to the fermions are suppressed, whereas precise measurements of the di-photon channel of the Higgs boson decay can provide a significant probe of the model especially when the axion-like particle is heavy and its coupling to di-photon is suppressed.

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Section: Introductionmentioning

confidence: 99%

Higgs probes of axion-like particles

Aiko,

Endo

2023

J. High Energ. Phys.

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“…Some couplings have been shown to be only testable in Higgs physics, particularly through yet unexplored decays of the Higgs boson. Recent analyses in this line include flavour-violating ALPs [56,57] and a search for Higgs decays to ALPs with subsequent decay to photons and jets explored in [58]; see also Ref. [59] for an extensive review on the topic.…”

Section: Introductionmentioning

confidence: 99%

New Higgs decays to axion-like particles

Biekötter,

Chala,

Spannowsky

2022

Preprint

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We investigate the interactions of a light scalar with the Higgs boson and second-generation fermions, which trigger new rare decays of the Higgs boson into 4µ, 2µ2γ, 6µ and 4µ2j. We recast current LHC searches to constrain these decays and develop new collider analyses for those channels which are only poorly tested by existing studies. With the currently collected data we can probe branching ratios as small as 1.5 × 10 −5 , 8.7 × 10 −5 , 5.7 × 10 −8 and 1.6 × 10 −7 , respectively. For the High-Luminosity LHC run, considered here to involve 3 ab −1 of integrated luminosity, these numbers go down to 1.3 × 10 −5 , 2.0 × 10 −6 , 3.0 × 10 −9 and 5.4 × 10 −9 , respectively. We also comment on other channels that remain still unexplored.

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Prospects for exotic h→4τ decays in single and di-Higgs boson production at the LHC and future hadron colliders

Adhikary,

Banerjee,

Barman

et al. 2024

Phys. Rev. D

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We study the prospects for observing exotic decays of the Standard Model Higgs boson h into light beyond the Standard Model scalars a with mass ma≲mh/2 in the single Higgs and Higgs pair production channels at the high luminosity run of the Large Hadron Collider (HL-LHC). Discovery prospects for single Higgs production in the gluon-gluon fusion and vector boson fusion modes with the Higgs boson decaying via the exotic mode h→aa→4τ are analyzed at the HL-LHC. The projected sensitivity for exotic Higgs decays in the nonresonant Higgs pair production channel pp→hh→(h→bb¯)(h→aa→4τ)→2b4τ at the HL-LHC and a future s=100 TeV hadron collider (FCC-hh) are also estimated. Furthermore, we study HL-LHC’s potential reach for the Higgs-strahlung process in the 2b4τ channel, taking into account the contamination from nonresonant Higgs pair production. Finally, the potential reach for resonant Higgs pair production in the 2b4τ channel at the HL-LHC is also explored for several choices of {mH,ma}. Our studies suggest that significant improvements over existing bounds are achievable in several production channels, motivating new dedicated searches for h→aa→4τ at the HL-LHC and future colliders. Published by the American Physical Society 2024

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Jets and photons spectroscopy of Higgs-ALP interactions

Cited by 4 publications

References 46 publications

Higgs probes of axion-like particles

Higgs probes of axion-like particles

New Higgs decays to axion-like particles

Prospects for exotic h→4τ decays in single and di-Higgs boson production at the LHC and future hadron colliders

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