Results 21 to 30 of about 364 (120)

Adding Flavor to the SMEFT

Journal of High Energy Physics, 2022
We study the flavor structure of the lepton and baryon number-conserving dimension-6 operators in the Standard Model effective field theory (SMEFT). Building on the work of [1], we define several well-motivated flavor symmetries and symmetry-breaking ...
Admir Greljo, Ajdin Palavrić, Anders Eller Thomsen   +2 more
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Flavour and CP symmetries in the inverse seesaw

European Physical Journal C: Particles and Fields, 2022
We consider an inverse seesaw mechanism of neutrino mass generation in which the Standard Model is extended by $$3+3$$ 3 + 3 (heavy) sterile states, and endowed with a flavour symmetry $$G_f$$ G f , $$G_f=\Delta (3 \, n^2)$$ G f = Δ ( 3 n 2 ) or $$G_f ...
C. Hagedorn, J. Kriewald, J. Orloff, A. M. Teixeira   +3 more
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Low-scale leptogenesis with flavour and CP symmetries

Journal of High Energy Physics, 2022
We consider a type-I seesaw framework endowed with a flavour symmetry, belonging to the series of non-abelian groups ∆(3 n 2) and ∆(6 n 2), and a CP symmetry.
M. Drewes, Y. Georis, C. Hagedorn, J. Klarić   +3 more
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A minimal modular invariant neutrino model

Journal of High Energy Physics, 2023
We present a neutrino mass model based on modular symmetry with the fewest input parameters to date, which successfully accounts for the 12 lepton masses and mixing parameters through 6 real free parameters including the modulus.
Gui-Jun Ding, Xiang-Gan Liu, Chang-Yuan Yao   +2 more
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Minimal inverse-seesaw mechanism with Abelian flavour symmetries

Journal of High Energy Physics, 2021
We study the phenomenology of the minimal (2, 2) inverse-seesaw model supplemented with Abelian flavour symmetries. To ensure maximal predictability, we establish the most restrictive flavour patterns which can be realised by those symmetries. This setup
H. B. Câmara, R. G. Felipe, F. R. Joaquim   +2 more
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Modular flavor symmetries and fermion mass hierarchies

Journal of High Energy Physics
We investigate fermion mass hierarchies in models with modular flavor symmetries. Several key conclusions arise from the observation that the determinants of mass matrices transform as 1-dimensional vector-valued modular forms. We demonstrate that, under
Mu-Chun Chen, Xueqi Li, Xiang-Gan Liu, Michael Ratz   +3 more
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Weak scale right-handed neutrino as pseudo-Goldstone fermion of spontaneously broken U 1 L μ − L τ $$ \mathrm{U}{(1)}_{L_{\mu }-{L}_{\tau }} $$

Journal of High Energy Physics, 2021
Possibility of a Right-Handed (RH) neutrino being a Goldstone fermion of a spontaneously broken global U(1) symmetry in a supersymmetric theory is considered.
Anjan S. Joshipura, Ketan M. Patel
doaj   +1 more source

Quark-lepton mass relations from modular flavor symmetry

Journal of High Energy Physics
The so-called Golden Mass Relation provides a testable correlation between charged-lepton and down-type quark masses, that arises in certain flavor models that do not rely on Grand Unification. Such models typically involve broken family symmetries.
Mu-Chun Chen, Stephen F. King, Omar Medina, José W. F. Valle   +3 more
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Exploring the flavor structure of quarks and leptons with reinforcement learning

Journal of High Energy Physics, 2023
We propose a method to explore the flavor structure of quarks and leptons with reinforcement learning. As a concrete model, we utilize a basic value-based algorithm for models with U(1) flavor symmetry.
Satsuki Nishimura, Coh Miyao, Hajime Otsuka   +2 more
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Flavor symmetries from modular subgroups in magnetized compactifications

Journal of High Energy Physics
We study the flavor structures of zero-modes, which are originated from the modular symmetry on T 1 2 × T 2 2 $$ {T}_1^2\times {T}_2^2 $$ and its orbifold with magnetic fluxes. We introduce the constraint on the moduli parameters by τ 2 = Nτ 1, where τ i
Tatsuo Kobayashi, Kaito Nasu, Ryusei Nishida, Hajime Otsuka, Shohei Takada   +4 more
doaj   +1 more source