Lepton specific two-Higgs-doublet model based on a 
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 gauge symmetry with dark matter

Nomura, Takaaki; Sanyal, Prasenjit

doi:10.1103/physrevd.100.115036

Cited by 7 publications

(4 citation statements)

References 130 publications

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“…These phase-dependent interactions are in general flavor-violating but are strongly constrained by experiments. Beyond the SM, flavor-violating interactions can for instance be generated from two Higgs doublet models [16][17][18]. Nevertheless, it is intriguing that the SM fermions have a chiral phase degree of freedom which may be specie-dependent.…”

Section: Discussionmentioning

confidence: 99%

“…Here, we have inserted the matrix e i γ 5 (β−α) between ψ α and ψ. This ensures that when considering the Yukawa interaction for massless fermions, a scalar field with a non-vanishing vacuum expectation value would generate the desired mass term in (17). Using (29), we find ψ α e i γ 5 (β−α) ψ = ΨΨ so H Y is phase-independent.…”

Section: Single Fermionic Interactionsmentioning

confidence: 94%

“…whose the Lagrangian is given by (17). One could argue that β is physically irrelevant because it can be removed by performing the inverse transformation of (29) but this is incorrect.…”

Section: Single Fermionic Interactionsmentioning

confidence: 99%

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Chiral phases for massive fermions and spinor classifications

Lee

2021

Preprint

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We explore the physics of regular spinors in the Lounesto classification. These spinors are constructed by introducing two chiral phases. One is a degree of freedom present in choosing the γ µ matrices that leaves the Lorentz generators invariant. Another is a degree of freedom allowed by the massive spin-half field that is unconstrained by Poincaré symmetry and locality. By choosing appropriate values of the two phases, we obtain all the classes of regular spinors. For the Dirac fermions, both phases are equal. We argue that the chiral phase of the Standard Model fermions is a new set of physical parameter. We find, the lepton chiral phases cannot be measured within the weak interaction. For quarks, their phases are conjectured to be identical. In general, to measure the phases between different fermionic generations would require interactions beyond the Standard Model.

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Section: Discussionmentioning

confidence: 99%

Section: Single Fermionic Interactionsmentioning

confidence: 94%

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Chiral phases for massive fermions and spinor classifications

Lee

2021

Preprint

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“…Nowadays, the 331 model in many different versions is applied to the particle physics phenomenology at the LHC. A huge number of papers has been explored as a Z benchmark model in the literature [20][21][22][23][24][25][26][27][28][29][30][31][32][33][34].…”

Section: Introductionmentioning

confidence: 99%

The CP violation and scalar dark matter in a 331 model

Neves

2021

Preprint

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The 331 model with right-handed neutrinos is re-assessed to investigate the CP violation in the quark sector. After the spontaneous symmetry breaking, the masses and physical fields of the particle content are obtained. The fermions content of the 331 model is enlarged to include exotic quarks with known electric charge and with masses defined at the TeV scale. The existence of these exotic quarks induces extra CP violations via couplings with quarks of the Standard Model mediated by charged gauge boson with mass fixed at the TeV scale. An extra discrete Z 2 symmetry is introduced in the 331 model to get a stable scalar field that can be a candidate to the dark matter content. The new scalar field interacts at tree level with the Z gauge boson that works as a dark matter portal. The relic density associated with the scalar field is calculated to yield the solution mass that satisfies the observed dark matter. The region allowed on the parameter space of the dark matter mass versus Z mass is obtained to include the bounds of PANDAX2017, XENON1T(2t.y) and LUX experiments.

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Explaining Atomki anomaly and muon g − 2 in U(1)X extended flavour violating two Higgs doublet model

Nomura¹,

Sanyal

2021

J. High Energ. Phys.

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We investigate a two Higgs doublet model with extra flavour depending U(1)X gauge symmetry where Z′ boson interactions can explain the Atomki anomaly by choosing appropriate charge assignment for the SM fermions. For parameter region explaining the Atomki anomaly we obtain light scalar boson with $$ \mathcal{O} $$ O (10) GeV mass, and we explore scalar sector to search for allowed parameter space. We then discuss anomalous magnetic dipole moment of muon and lepton flavour violating processes induced by Yukawa couplings of our model.

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Lepton specific two-Higgs-doublet model based on a U(1)X gauge symmetry with dark matter

Cited by 7 publications

References 130 publications

Chiral phases for massive fermions and spinor classifications

Chiral phases for massive fermions and spinor classifications

The CP violation and scalar dark matter in a 331 model

Explaining Atomki anomaly and muon g − 2 in U(1)X extended flavour violating two Higgs doublet model

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