Study ofbcouplings in the standard weak doublet model and in models without atquark

Abstract We explore the interplay of New Physics (NP) effects in (g− 2)ℓ and h→ℓ+ℓ− within the Standard Model Effective Field Theory (SMEFT) framework, including one-loop Renormalization Group (RG) evolution of the Wilson coefficients as well as matching to the observables below the electroweak symmetry breaking scale. We include both the leading dimension six chirality flipping operators including a Higgs and SU(2)L gauge bosons as well as four-fermion scalar and tensor operators, forming a closed operator set under the SMEFT RG equations. We compare present and future experimental sensitivity to different representative benchmark scenarios. We also consider two simple UV completions, a Two Higgs Doublet Model and a single scalar LeptoQuark extension of the SM, and show how tree level matching to SMEFT followed by the one-loop RG evolution down to the electroweak scale can reproduce with high accuracy the (g−2)ℓ and h→ℓ+ℓ− contributions obtained by the complete one- and even two-loop calculations in the full models.

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Muon flavor violation in two-Higgs-doublet model with extra Yukawa couplings

Physical Review D ◽

10.1103/physrevd.102.115017 ◽

2020 ◽

Vol 102 (11) ◽

Author(s):

Wei-Shu Hou ◽

Girish Kumar

Keyword(s):

Higgs Doublet ◽

Yukawa Couplings ◽

Flavor Violation ◽

Doublet Model ◽

Two Higgs Doublet Model

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Signals of new gauge bosons in gauged two higgs doublet model

The European Physical Journal C ◽

10.1140/epjc/s10052-018-6067-7 ◽

2018 ◽

Vol 78 (8) ◽

Cited By ~ 4

Author(s):

Wei-Chih Huang ◽

Hiroyuki Ishida ◽

Chih-Ting Lu ◽

Yue-Lin Sming Tsai ◽

Tzu-Chiang Yuan

Keyword(s):

Higgs Doublet ◽

Gauge Bosons ◽

Doublet Model ◽

Two Higgs Doublet Model

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STUDY OF IN-MEDIUM PROPERTIES OF N*(1535) AND CHIRAL SYMMETRY FOR BARYONS THROUGH THE η-MESIC NUCLEI FORMATION AT J-PARC

Modern Physics Letters A ◽

10.1142/s0217732308029691 ◽

2008 ◽

Vol 23 (27n30) ◽

pp. 2512-2515 ◽

Cited By ~ 1

Author(s):

HIDEKO NAGAHIRO ◽

DAISUKE JIDO ◽

SATORU HIRENZAKI

Keyword(s):

Chiral Symmetry ◽

Cross Sections ◽

Optical Potential ◽

Nuclear Medium ◽

Nucleus Interaction ◽

Level Crossing ◽

Doublet Model ◽

The Difference ◽

Characteristic Features ◽

Mesic Nuclei

We investigate the properties of η-nucleus interaction by postulating the N*(1535) dominance for η-N system. We evaluate the N*(1535) properties in the nuclear medium using two kinds of chiral models, and find that these two models provide qualitatively different η-nucleus optical potentials reflecting the quite distinct properties of N*(1535) in these chiral models. Especially, in the chiral doublet model, we can expect to have the level crossing between η and N*(1535)-hole which is expected to provide the characteristic features for the optical potential and the formation spectra. We find also that the difference of these models can be seen in the formation cross sections of the η mesic nuclei with (π+, p ) reaction expected to be performed at J-PARC project.

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THE EFFECTS OF NON-UNIVERSAL EXTRA DIMENSIONS ON THE $\tau\rightarrow\mu\bar\nu_i\nu_i$ DECAY

Modern Physics Letters A ◽

10.1142/s0217732305018001 ◽

2005 ◽

Vol 20 (24) ◽

pp. 1845-1857 ◽

Cited By ~ 3

Author(s):

E. O. ILTAN

Keyword(s):

Extra Dimension ◽

Extra Dimensions ◽

Branching Ratio ◽

Higgs Doublet ◽

Doublet Model ◽

Two Higgs Doublet Model

We study [Formula: see text], i = e, μ, τ decays in the two-Higgs doublet model, with the inclusion of one and two spatial non-universal extra dimensions. We observe that the branching ratio is sensitive to two extra dimensions in contrary to a single extra dimension.

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