2019
DOI: 10.1007/jhep05(2019)165
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Reconciling dark matter, $$ {R}_{K^{\left(\ast \right)}} $$ anomalies and (g − 2)μ in an Lμ − Lτ scenario

Abstract: We propose an anomaly free unified scenario by invocation of an extra local U(1) Lµ−Lτ gauge symmetry. This scenario simultaneously resolves the R K (*) anomalies, the dark matter puzzle and the long-standing discrepancy in muon's anomalous magnetic moment. A complex scalar (η) having nonzero L µ − L τ charge has been introduced to break this new U(1) symmetry spontaneously. Moreover, for the purpose of studying dark matter phenomenology and R K (*) anomalies in a correlated manner, we introduce an inert SU(2)… Show more

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Cited by 41 publications
(23 citation statements)
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References 136 publications
(179 reference statements)
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“…Since gauging the difference between two leptonflavour numbers is anomaly-free within the SM, these constructions provide a minimal extension of the SM gauge group without the need for extra fermions [24,25]. It has been noted that such a model can simultaneously account for the observed discrepancy in (g−2) µ and even accommodate dark matter with the correct relic abundance [18,[26][27][28][29][30][31]. Furthermore, as suggested in ref.…”
Section: Introductionmentioning
confidence: 91%
“…Since gauging the difference between two leptonflavour numbers is anomaly-free within the SM, these constructions provide a minimal extension of the SM gauge group without the need for extra fermions [24,25]. It has been noted that such a model can simultaneously account for the observed discrepancy in (g−2) µ and even accommodate dark matter with the correct relic abundance [18,[26][27][28][29][30][31]. Furthermore, as suggested in ref.…”
Section: Introductionmentioning
confidence: 91%
“…The one way of cancelling the anomaly without adding more fermions is to consider equal and opposite charges for any two generations of leptons and let the charge of the third generation be zero. These are the symmetries like U(1) Le−Lµ , U(1) Lµ−Lτ which has been discussed earlier in the references [31,33,35,50]. However, if we want to consider non-zero charges for all the three lepton generations, then we need to have additional chiral fermions in our model for anomaly cancellation.…”
Section: Our Frameworkmentioning
confidence: 99%
“…Models based on the L µ − L τ gauge symmetry have recently brought a lot of attention due to some flavor anomaly [69][70][71][72][73][74][75]. The Z boson can be quite light and has no interactions with quarks at tree-level.…”
Section: Light Z Modelsmentioning
confidence: 99%