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Harnik, Roni; Martín, A.; Okui, Takemichi; Primulando, Reinard; Yu, Felix

doi:10.1103/physrevd.88.076009

Cited by 85 publications

(98 citation statements)

References 26 publications

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“…In reference [68] an exclusion of φ t > 40 • (φ t > 25 • ) for a luminosity of 50 fb −1 (300 fb −1 ) was obtained for 14 TeV and assuming φ t = 0 as the null hypothesis. A study of the τ + τ − h vertex was proposed in [69] (see also [70,71]) and a detailed study taking into account the main backgrounds [72] lead to an estimate in the precision of ∆φ τ of 27 • (14.3 • ) for a luminosity of 150 fb −1 (500 fb −1 ) and a center of mass energy of 14 Tev. Figure 9.…”

Section: Direct Measurements Of the Cp-violating Anglementioning

confidence: 99%

Large pseudoscalar Yukawa couplings in the complex 2HDM

Fontes

Romão

Santos

et al. 2015

J. High Energ. Phys.

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Abstract:We start by presenting the current status of a complex flavour conserving twoHiggs doublet model. We will focus on some very interesting scenarios where unexpectedly the light Higgs couplings to leptons and to b-quarks can have a large pseudoscalar component with a vanishing scalar component. Predictions for the allowed parameter space at end of the next run with a total collected luminosity of 300 f b −1 and 3000 f b −1 are also discussed. These scenarios are not excluded by present data and most probably will survive the next LHC run. However, a measurement of the mixing angle φ τ , between the scalar and pseudoscalar component of the 125 GeV Higgs, in the decay h → τ + τ − will be able to probe many of these scenarios, even with low luminosity. Similarly, a measurement of φ t in the vertextth could help to constrain the low tan β region in the Type I model.

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Section: Direct Measurements Of the Cp-violating Anglementioning

confidence: 99%

Large pseudoscalar Yukawa couplings in the complex 2HDM

Fontes

Romão

Santos

et al. 2015

J. High Energ. Phys.

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“…Several observables based on angles between tau decay planes built from the visible parts of the tau decay have been proposed [18,19,20,21,22,23,24]. In case of direct decays τ ± → π ± ν, the decay plane can be defined by the pion track and its impact parameter with respect to the point of the primary interaction [18,19,20].…”

Section: Cp Invariance In H → ττ Decaysmentioning

confidence: 99%

Measurement of the Higgs Boson Couplings and CP Structure Using Tau Leptons at the LHC

Zanzi

2017

Nuclear and Particle Physics Proceedings

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“…As a first attempt to evaluate the Higgs exotic decay program at future lepton colliders, we do not include the case of very light intermediate particles whose decay products will be collimated, but postpone this for future study when the detector performance is more clearly defined. There are many more exotic Higgs decay modes to consider, such as Higgs decaying to a pair of intermediate particles with un-even masses [25], Higgs CP property measurements from its decay differential distributions [57][58][59][60], flavor violating decays, decays to light quarks [61], decays into meta-stable particles, and complementary Higgs exotic productions [62]. Our work is a first systematic study evaluating the physics potential of future lepton colliders to probe Higgs exotic decays.…”

Section: -10mentioning

confidence: 99%

Exotic decays of the 125 GeV Higgs boson at future e ⁺ e ⁻ colliders

2017

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The discovery of unexpected properties of the Higgs boson would offer an intriguing opportunity to shed light on some of the most profound puzzles in particle physics. Beyond Standard Model (BSM) decays of the Higgs boson could reveal new physics in a direct manner. Future electron-positron lepton colliders operating as Higgs factories, including CEPC, FCC-ee and ILC, with the advantages of a clean collider environment and large statistics, could greatly enhance sensitivity in searching for these BSM decays. In this work, we perform a general study of Higgs exotic decays at future e + e − lepton colliders, focusing on the Higgs decays with hadronic final states and/or missing energy, which are very challenging for the High-Luminosity program of the Large Hadron Collider (HL-LHC). We show that with simple selection cuts, O(10 −3 −10 −5 ) limits on the Higgs exotic decay branching fractions can be achieved using the leptonic decaying spectator Z boson in the associated production mode e + e − → ZH. We further discuss the interplay between detector performance and Higgs exotic decays, and other possibilities of exotic decays. Our work is a first step in a comprehensive study of Higgs exotic decays at future lepton colliders, which is a key area of Higgs physics that deserves further investigation.

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MeasuringCPviolation inh→τ+τ−at colliders

Cited by 85 publications

References 26 publications

Large pseudoscalar Yukawa couplings in the complex 2HDM

Large pseudoscalar Yukawa couplings in the complex 2HDM

Measurement of the Higgs Boson Couplings and CP Structure Using Tau Leptons at the LHC

Exotic decays of the 125 GeV Higgs boson at future e ⁺ e ⁻ colliders

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MeasuringCPviolation inh→τ+τ−at colliders

Cited by 85 publications

References 26 publications

Large pseudoscalar Yukawa couplings in the complex 2HDM

Large pseudoscalar Yukawa couplings in the complex 2HDM

Measurement of the Higgs Boson Couplings and CP Structure Using Tau Leptons at the LHC

Exotic decays of the 125 GeV Higgs boson at future e + e − colliders

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Product

Resources

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Exotic decays of the 125 GeV Higgs boson at future e ⁺ e ⁻ colliders