scholarly journals Wrong sign Yukawa coupling of the 2HDM with a singlet scalar as dark matter confronted with dark matter and Higgs data

2017 ◽  
Vol 96 (11) ◽  
Author(s):  
Lei Wang ◽  
Rongle Shi ◽  
Xiao-Fang Han
Keyword(s):  
Dark Matter ◽  
Yukawa Coupling ◽  
Wrong Sign ◽  
Higgs Data

scholarly journals Wrong sign bottom Yukawa coupling in low energy supersymmetry

2018 ◽  
Vol 97 (11) ◽  
Author(s):  
Nina M. Coyle ◽  
Bing Li ◽  
Carlos E. M. Wagner
Keyword(s):  
Yukawa Coupling ◽  
Low Energy ◽  
Wrong Sign

scholarly journals Tau flavored dark matter and its impact on tau Yukawa coupling

2017 ◽  
Vol 2017 (02) ◽  
pp. 002-002 ◽  
Author(s):  
Wei Chao ◽  
Huai-Ke Guo ◽  
Hao-Lin Li
Keyword(s):  
Dark Matter ◽  
Yukawa Coupling

scholarly journals Generalized 2HDM with wrong-sign lepton-Yukawa coupling, in light of $$g_{\mu }-2$$ and lepton flavor violation at the future LHC

2021 ◽  
Vol 81 (12) ◽  
Author(s):  
Nivedita Ghosh ◽  
Jayita Lahiri
Keyword(s):  
Parameter Space ◽  
Yukawa Coupling ◽  
Higgs Doublet ◽  
Lepton Flavor Violation ◽  
Model Parameter ◽  
Lepton Flavor ◽  
Flavor Violation ◽  
Artificial Neural Network Analysis ◽  
Two Higgs Doublet Model ◽  
Wrong Sign

AbstractTo explain the observed muon anomaly and simultaneously evade bounds from lepton flavor violation in the same model parameter space is a long-cherished dream. In view of a generalized Two Higgs Doublet Model, with a Yukawa structure as a perturbation of Type-X, we are able to get substantial parameter space satisfying these criteria. In this work, we focus on a region with “wrong-sign” lepton-Yukawa coupling which gives rise to interesting phenomenological consequences. Performing a simple cut-based analysis, we show that at 14 TeV run of the LHC with $$300 \mathrm{{fb}}^{-1}$$ 300 fb - 1 integrated luminosity, part of the model parameter space can be probed with significance "Equation missing" which further improves with Artificial Neural Network analysis.

scholarly journals Probing loop effects in wrong-sign Yukawa coupling region of Type-II 2HDM

2021 ◽  
Vol 81 (5) ◽  
Author(s):  
Wei Su
Keyword(s):  
Parameter Space ◽  
Yukawa Coupling ◽  
Higgs Mass ◽  
Precision Measurements ◽  
Tree Level ◽  
Type Ii ◽  
Coupling Region ◽  
Loop Level ◽  
Wrong Sign

AbstractIn the framework of 2HDM, we explore the wrong-sign Yukawa region with direct and indirect searches up to one-loop level. The direct searches include the latest $$H/A \rightarrow f{\bar{f}}, VV, Vh, hh$$ H / A → f f ¯ , V V , V h , h h reports at current LHC, and the study of indirect Higgs precision measurements works with current LHC, future HL-LHC and CEPC. At tree level of Type-II 2HDM, for degenerate heavy Higgs mass $$m_A=m_H=m_{H^\pm }<800$$ m A = m H = m H ± < 800 GeV, the wrong-sign Yukawa regions are excluded largely except for the tiny allowed region around $$\cos (\beta -\alpha )\in (0.2,0.3)$$ cos ( β - α ) ∈ ( 0.2 , 0.3 ) under the combined Higgs constraints. The excluded region is also nearly independent of parameter $$m_{12}$$ m 12 or $$\lambda v^2=m_A^2-m_{12}^2/(\sin \beta \cos \beta )$$ λ v 2 = m A 2 - m 12 2 / ( sin β cos β ) . The situation changes a lot after including loop corrections to the indirect searches, for example $$m_A=1500 \text {~GeV}$$ m A = 1500 GeV , the region with $$\lambda v^2<0$$ λ v 2 < 0 will be stronger constrained to be totally excluded. Whilst parameter space with $$\lambda v^2>0$$ λ v 2 > 0 would get larger survived wrong-sign region for $$m_A=800 ~\text {~GeV}$$ m A = 800 GeV compared to it at tree level. We also conclude Higgs direct searches works better on constraining $$\lambda v^2 \approx 0$$ λ v 2 ≈ 0 GeV range than theoretical constraints. We also find that the loop-level wrong-sign Yukawa limit only occurs at mass decoupling scale.

scholarly journals t − b − τ Yukawa unification in non-holomorphic MSSM

2021 ◽  
Vol 2021 (4) ◽  
Author(s):  
Yaşar Hiçyılmaz
Keyword(s):  
Dark Matter ◽  
Yukawa Coupling ◽  
Direct Detection ◽  
Detection Limits ◽  
Susy Breaking ◽  
The Third ◽  
Gut Scale ◽  
Yukawa Unification ◽  
Relic Abundance

Abstract We show that in the CMSSM with the non-holomorphic soft SUSY breaking terms, the Yukawa coupling unification of the third family fermions at the GUT scale, called t − b − τ Yukawa unification (YU), is possible under the recent collider and Dark Matter results. The YU parameter can also be found Rtbτ≈ 1, called perfect unification. We find that the squark masses exceed 3 TeV while the stau can be considerably lighter. In the case of YU, the tan β is in the interval [46,55]. We obtain bino-like dark matter (DM) of mass in the range of 0.6 TeV ≲ $$ {m}_{\upchi_1^0} $$ m χ 1 0 ≲ 1.3 TeV where the recent Dark Matter direct detection limits are also satisfied. We also identify A-resonance solutions which reduce the relic abundance of LSP neutralino down to the ranges compatible with the current Planck measurements.

scholarly journals A light SUSY dark matter after CDMS-II, LUX and LHC Higgs data

2014 ◽  
Vol 2014 (5) ◽  
Author(s):  
Junjie Cao ◽  
Chengcheng Han ◽  
Lei Wu ◽  
Peiwen Wu ◽  
Jin Min Yang
Keyword(s):  
Dark Matter ◽  
Higgs Data
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