Quark flavor transitions in<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi>L</mml:mi></mml:mrow><mml:mrow><mml:mi>μ</mml:mi></mml:mrow></mml:msub><mml:mo>−</mml:mo><mml:msub><mml:mrow><mml:mi>L</mml:mi></mml:mrow><mml:mrow><mml:mi>τ</mml:mi></mml:mrow></mml:msub></mml:mrow></mml:math>models

Altmannshofer, Wolfgang; Gori, Stefania; Pospelov, Maxim; Yavin, Itay

doi:10.1103/physrevd.89.095033

Cited by 460 publications

(656 citation statements)

References 46 publications

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“…1, we plot the mass ratios m 2 /m 1 and m 3 /m 1 against the Dirac CP phase δ using Eq. (15). The bands show uncertainty coming from the 1σ error in the neutrino mixing parameters.…”

Section: Introductionmentioning

confidence: 99%

“…An attractive feature of this a e-mail: asai@hep-th.phys.s.u-tokyo.ac.jp class of models is that the muon g − 2 anomaly [5][6][7][8] may be explained by the loop contribution of the U(1) L μ −L τ gauge boson if its mass lies around the weak scale or lower [9][10][11][12], though this possibility is severely restricted by the searches of the neutrino trident production process [13][14][15][16]. These models may also explain anomalies in flavor physics [15,17] and offer promising candidates for dark matter in the Universe [18][19][20][21][22]. For other recent studies on gauged U(1) L μ −L τ models, see Refs.…”

Section: Introductionmentioning

confidence: 99%

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Predictions for the neutrino parameters in the minimal gauged $$\hbox {U}(1)_{L_\mu -L_\tau }$$ U ( 1 ) L μ - L τ model

2017

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We study the structure of the neutrino-mass matrix in the minimal gauged U(1) L μ −L τ model, where three right-handed neutrinos are added to the Standard Model in order to obtain non-zero masses for the active neutrinos. Because of the U(1) L μ −L τ gauge symmetry, the structure of both Dirac and Majorana mass terms of neutrinos is tightly restricted. In particular, the inverse of the neutrinomass matrix has zeros in the (μ, μ) and (τ, τ ) components, namely, this model offers a symmetric realization of the socalled two-zero-minor structure in the neutrino-mass matrix. Due to these constraints, all the CP phases -the Dirac CP phase δ and the Majorana CP phases α 2 and α 3 -as well as the mass eigenvalues of the light neutrinos m i are uniquely determined as functions of the neutrino mixing angles θ 12 , θ 23 , and θ 13 , and the squared mass differences m 2 21 and m 2 31 . We find that this model predicts the Dirac CP phase δ to be δ 1.59π -1.70π (1.54π -1.78π ), the sum of the neutrino masses to be i m i 0.14-0.22 eV (0.12-0.40 eV), and the effective mass for the neutrinoless double-beta decay to be m ββ 0.024-0.055 eV (0.017-0.12 eV) at 1σ (2σ ) level, which are totally consistent with the current experimental limits. These predictions can soon be tested in future neutrino experiments. Implications for leptogenesis are also discussed.

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“…1, we plot the mass ratios m 2 /m 1 and m 3 /m 1 against the Dirac CP phase δ using Eq. (15). The bands show uncertainty coming from the 1σ error in the neutrino mixing parameters.…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Predictions for the neutrino parameters in the minimal gauged $$\hbox {U}(1)_{L_\mu -L_\tau }$$ U ( 1 ) L μ - L τ model

2017

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“…We acknowledge, however, that explicit flavor completions of this model could lead to correlated effects in other mesonphysics and leptonic observables [19,[31][32][33][34][35][36].…”

Section: A Minimal Modelmentioning

confidence: 99%

“…(24) more quantitatively, we broadly scan around the parameter sets in Eqs. (18) and (19) that accommodate the muon anomalies, varying the parameters in the following ranges…”

Section: Dark Matter Relic Abundancementioning

confidence: 99%

“…Most NP interpretations of the b → sµ + µ − anomalies postulate the existence of a new state in the range of Λ ∼ 1 − 10 TeV with tree-level couplings to muons and quarks, for instance a Z gauge boson [12,[18][19][20] or a scalar leptoquark [21][22][23][24]. The same interactions typically contribute to g µ − 2 at the one-loop level, but yield too small a contribution to explain the discrepancy in Eq.…”

Section: Introductionmentioning

confidence: 99%

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Dark matter relic from muon anomalies

2015

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We show that the recently reported anomalies in b → sµ + µ − transitions, as well as the longstanding gµ − 2 discrepancy, can be addressed simultaneously by a new massive abelian gauge boson with loop-induced coupling to muons. Such a scenario typically leads to a stable dark matter candidate with a thermal relic density close to the observed value. Dark matter in our model couples dominantly to leptons, hence signals in direct detection experiments lie well below the current sensitivity. The LHC, in combination with indirect detection searches, can test this scenario through distinctive signatures with muon pairs and missing energy.

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Introduction

Kirk¹

2019

Charming New Physics in Beautiful Processes?

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Quark flavor transitions inLμ−Lτmodels

Cited by 460 publications

References 46 publications

Predictions for the neutrino parameters in the minimal gauged $$\hbox {U}(1)_{L_\mu -L_\tau }$$ U ( 1 ) L μ - L τ model

Predictions for the neutrino parameters in the minimal gauged $$\hbox {U}(1)_{L_\mu -L_\tau }$$ U ( 1 ) L μ - L τ model

Dark matter relic from muon anomalies

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