Charged Lepton EDM with Extra Yukawa Couplings

Hou, Wei-Shu; Kumar, Girish; Teunissen, Sven

doi:10.48550/arxiv.2109.08936

Cited by 1 publication

(2 citation statements)

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“…The ρ τ τ coupling in the alignment limit is one of the drivers for our second signal process, pp → H, A → τ τ . In addition, with complex ρ τ τ , the hτ τ coupling can become complex hence CP violating, with the phase [19], Limits from CMS and ATLAS on B(H → τ µ, τ τ ) under the assumption of SM-like (exotic) H production.…”

Section: The General Two Higgs Doublet Modelmentioning

confidence: 99%

“…The extra τ Yukawa coupling ρ τ τ with alignment is the main driver for the gg → H, A → τ τ process. In addition, ρ τ τ can carry a complex phase, which can contribute to τ electric dipole moment [19], or reveal itself in the CP structure of the hτ τ coupling. The complex phase of the hτ τ coupling is extensively searched by ATLAS [20] and CMS [21].…”

Section: Introductionmentioning

confidence: 99%

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Searching for extra Higgs bosons via $pp\to H,A\to τμ, ττ$ at the Large Hadron Collider

Hou¹,

Jain²,

Kao³

2022

Preprint

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We follow the heavy Higgs searches at the Large Hadron Collider (LHC) for H → τ µ by CMS, and H → τ τ by ATLAS and CMS, to study the prospects of discovering the extra Higgs states in pp → H, A → τ µ, τ τ with eµ + / E T and j τ µ + / E T final states, where j τ = π , ρ , a 1 and / E T is missing transverse energy. In a general two Higgs doublet model framework without Z 2 symmetry, extra Yukawa couplings ρ τ τ and ρ τ µ can drive H, A → τ τ and τ µ channels at hadron colliders, following gluon-gluon fusion production with extra ρ tt couplings. The light Higgs boson h( 125) is found to resemble closely the Standard Model Higgs boson. In the alignment limit of cos γ → 0 for h-H mixing, flavor changing neutral Higgs couplings such as h → τ µ are naturally suppressed, but the couplings of the heavier H is optimized by sin γ → 1. We define various signal regions for H, A → τ µ and τ τ , and evaluate physics backgrounds from dominant processes with realistic acceptance cuts and tagging efficiencies. Two different studies are presented: we first perform a parton level study without any hadronization and with minimal detector smearing; we then include hadronization using PYTHIA 8.2 and fast detector simulation using DELPHES to give event level simulation. Results for √ s = 13 TeV appear promising, which we extend further to √ s = 14 TeV for the High Luminosity LHC.

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Section: The General Two Higgs Doublet Modelmentioning

confidence: 99%