Radiative corrections to decay branching ratios of the CP-odd Higgs boson in two Higgs doublet models

Aiko, Masashi; Kanemura, Shinya; Sakurai, Kodai

doi:10.1016/j.nuclphysb.2022.116047

Cited by 5 publications

(3 citation statements)

References 152 publications

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“…) and these results will be summarised below. Electroweak corrections to Γ(A 0 → h 0 Z) were also calculated for the first time in [45] and are of the order of 10%.…”

Section: The Branching Ratios Of a 0 In 2hdms With Nfcmentioning

confidence: 99%

“…)and involves an integration over the momenta of ff . Its explicit expression is given in [39,44,45]. The partial width Γ(A 0 → H 0 Z) has the same form as equation (10), but with m h 0 replaced by m H 0 and b a -…”

Section: The Branching Ratios Of a 0 In 2hdms With Nfcmentioning

confidence: 99%

“…In the 2HDM (Type I) A 0 → h 0 Z * has the largest BR for b > tan 20, but in the other three models BR (A 0 → h 0 Z * ) < 1%. In [45]…”

Section: The Branching Ratios Of a 0 In 2hdms With Nfcmentioning

confidence: 99%

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The decay A ⁰ → h ⁰ Z(∗) in the inverted hierarchy scenario and its detection prospects at the large hadron collider

Akeroyd

Alanazi

Moretti

2023

J. Phys. G: Nucl. Part. Phys.

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Searches are being carried out at the Large Hadron Collider (LHC) for the decay of the CP-odd scalar ($A^0$) in Two-Higgs-Doublet Models (2HDMs) with Natural Flavour Conservation (NFC) in the channel$A^0\to h^0 Z$ (with $m_{h^0}=125$ GeV and $Z$ on-shell).In the absence of any signal, limits on the parameter space of $[\tan\beta, \cos(\beta-\alpha), m_{A^0}]$ in each 2HDM are derived for $m_{A^0} > 225$ GeV. In this work we consider the scenario of invertedhierarchy with $m_{h^0}<125$ GeV and $m_{H^0}=125$ GeV in which the decay $A^0\to h^0 Z^{(*)}$ (i.e. including the case of an off-shell $Z$) can have a large branching ratio in the 2HDM (Type I) for $m_{A^0}<225$ GeV. Wecalculate the signal cross section $\sigma(gg\to A^0)\times {\rm BR}(A^0\to h^0Z^{(*)})\times {\rm BR}(h^0\to b\overline b)$ in the 2HDM (Type I) with NFC and compare its magnitude with the cross section for the case of normal hierarchy ($m_{h^0}=125$ GeV) that is currently being searched for at the LHC. For the experimentally unexplored region $m_{A^0} < 225$ GeVit is shown that the above cross section for signal events in the scenario of inverted hierarchy can be of the order of a few picobarns.Such sizeable cross sections are several orders of magnitude larger than the cross sections for the case of normal hierarchy, thus motivating an extension of the ongoing searches for $A^0\to h^0 Z^{(*)}$to probe the scenario of inverted hierarchy.

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“…) and these results will be summarised below. Electroweak corrections to Γ(A 0 → h 0 Z) were also calculated for the first time in [45] and are of the order of 10%.…”

Section: The Branching Ratios Of a 0 In 2hdms With Nfcmentioning

confidence: 99%

Section: The Branching Ratios Of a 0 In 2hdms With Nfcmentioning

confidence: 99%

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The decay A ⁰ → h ⁰ Z(∗) in the inverted hierarchy scenario and its detection prospects at the large hadron collider

Akeroyd

Alanazi

Moretti

2023

J. Phys. G: Nucl. Part. Phys.

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Introduction and Summary

Aiko

2023

Springer Theses

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Exploring wrong sign scenarios in the Yukawa-Aligned 2HDM

Kanemura

Mondal

Yagyu

2023

J. High Energ. Phys.

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We discuss scenarios with wrong-sign (WS) Yukawa couplings for the discovered Higgs boson in the Yukawa-aligned two Higgs doublet model. In the WS scenario, Yukawa couplings for down-type quarks and/or charged leptons have an opposite sign as compared to those of the Higgs boson in the standard model, which can be consistent with current flavor data and the Higgs signal strengths. The phenomenology of additional Higgs bosons in such a scenario can be significantly different from that with right-sign Yukawa couplings, mainly due to a larger Higgs boson mixing to be required in the wrong-sign case. We show the parameter space which is excluded or explored by direct searches for the additional Higgs bosons at the current and high-luminosity LHC under the constraints from perturbative unitarity and vacuum stability. In particular, we find that most of the parameter space is explored in the WS scenario with the Type-X (lepton specific) Yukawa interaction which is a special case of the Yukawa alignment realized by imposing a softly-broken ℤ2 symmetry. We propose that multi-Higgs events from pair productions of the additional Higgs bosons can be the smoking gun signature to probe the WS scenario, and give the expected number of events at the high-luminosity LHC.

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Radiative corrections to decay branching ratios of the CP-odd Higgs boson in two Higgs doublet models

Cited by 5 publications

References 152 publications

The decay A ⁰ → h ⁰ Z(∗) in the inverted hierarchy scenario and its detection prospects at the large hadron collider

The decay A ⁰ → h ⁰ Z(∗) in the inverted hierarchy scenario and its detection prospects at the large hadron collider

Introduction and Summary

Exploring wrong sign scenarios in the Yukawa-Aligned 2HDM

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Radiative corrections to decay branching ratios of the CP-odd Higgs boson in two Higgs doublet models

Cited by 5 publications

References 152 publications

The decay A 0 → h 0 Z(∗) in the inverted hierarchy scenario and its detection prospects at the large hadron collider

The decay A 0 → h 0 Z(∗) in the inverted hierarchy scenario and its detection prospects at the large hadron collider

Introduction and Summary

Exploring wrong sign scenarios in the Yukawa-Aligned 2HDM

Contact Info

Product

Resources

About

The decay A ⁰ → h ⁰ Z(∗) in the inverted hierarchy scenario and its detection prospects at the large hadron collider

The decay A ⁰ → h ⁰ Z(∗) in the inverted hierarchy scenario and its detection prospects at the large hadron collider