Accumulating evidence for nonstandard leptonic decays of D_s mesons

Abstract

The measured rate for D_s -> l nu decays, where l is a muon or tau, is larger than the standard model prediction, which relies on lattice QCD, at the 3.8 sigma level. We discuss how robust the theoretical prediction is, and we show that the discrepancy with experiment may be explained by a charged Higgs boson or a leptoquark.

arXiv comment4 pages; v2 conforms with PRL version

References in corpus (23)

• The Cosmological Parameters 2006
• Big-Bang nucleosynthesis (Particle Data Group mini-review)
• Highly Improved Staggered Quarks on the Lattice, with Applications to Charm Physics
• The QCD spectrum with three quark flavors
• High-Precision Lattice QCD Confronts Experiment
• Light pseudoscalar decay constants, quark masses, and low energy constants from three-flavor lattice QCD
• Light hadrons with improved staggered quarks: approaching the continuum limit
• High Precision determination of the pi, K, D and D_s decay constants from lattice QCD
• Semileptonic decays of $D$ mesons in three-flavor lattice QCD
• Charmed meson decay constants in three-flavor lattice QCD
• Measurement of D0 -> pilnu (Klnu) Form Factors and Absolute Branching Fractions
• Radiative Leptonic Decays of Heavy Mesons
• Measurement of the Hadronic Form Factor in D0 --> K- e+ nue Decays
• Measurement of the q2 dependence of the Hadronic Form Factor in D0 --> K- e+ nu_e decays
• Measurement of the Pseudoscalar Decay Constant fDs Using Charm-Tagged Events in e+e- Collisions at \sqrt{s}=10.58GeV
• Search for Second-Generation Scalar Leptoquarks in $\mathbf{p}\bar{\mathbf{p}}$ Collisions at $\sqrt{s}$=1.96 TeV
• Effect of H^\pm on B^\pm\to τ^\pmν_τand D^\pm_s\to μ^\pmν_μ,τ^\pmν_τ
• Measurement of the Absolute Branching Fraction of D_s^+ --> tau^+ nu_tau Decay
• Measurement of B(D_S^+ --> ell^+ nu) and the Decay Constant f_D_{S^+}
• Effect of H^\pm on D^\pm_s\to μ^\pmνand D^\pm_s\to τ^\pmν
• Large enhancement of D -> e nu and Ds -> e nu in R Parity violating SUSY models
• Search for Pair Production of Second Generation Scalar Leptoquarks in ppbar Collisions at sqrt(s)=1.96 TeV
• Radiative leptonic decays of heavy mesons in heavy quark limit

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• Twenty-first Century Lattice Gauge Theory: Results from the QCD Lagrangian
• New lattice action for heavy quarks
• Measurement of B(Ds+ -->ell+ nu) and the Decay Constant fDs From 600/pb of e+e- Annihilation Data Near 4170 MeV
• FLAG Review 2024
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• Charged Higgs phenomenology in the lepton-specific two Higgs doublet model
• Improved Measurement of Absolute Branching Fraction of Ds to tau nu
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• |V_{cd}|, |V_{cs}| and f_{D_s} from (semi) leptonic $D_{(s)}$-decays : signals of New Physics ?
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• Constraining New Physics with D meson decays
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• Searching for New Physics with Charm
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• Correlated enhancements in $D_s\to \ell \nu$, $(g-2)$ of muon, and lepton flavor violating $\tau$ decays with two R-parity violating couplings
• New charged Higgs effects on ${\Gamma }_{K_{e2}}/{\Gamma }_{K_{\mu 2}}$, $f_{D_s}$ and $\mathcal{B}(B^{+}\to {\tau }^{+}\nu )$ in the Two-Higgs-Doublet model
• Upper bounds on $f_D$ and $f_{D_s}$ from two-point correlation function in QCD
• Two-loop neutrino masses with large R-parity violating interactions in supersymmetry
• Extracting CP violation and strong phase in D decays by using quantum correlations in psi(3770)-> D0\bar{D}0 -> (V1V2)(V3V4) and psi(3770)->D0\bar{D}0 -> (V1V2)(K pi)
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• The Ds and D+ Leptonic Decay Constants from Lattice QCD
• Can Flavor Physics Hint at Distinctive Signals for R-parity Violation at the LHC?
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• The CKM Matrix from Lattice QCD
• Overview of the CKM Matrix
• Measurements of D and Ds decay constants at CLEO
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• Model Dependent Analysis of D_((s))^+ arrows η^((')) l^+ ν_l Decays in Beyond Standard Model
• Theoretical Perspectives: XLIII Rencontres de Moriond - QCD
• Observation of $D^{+}\to K_S^0{\pi }^0{\mu }^{+}{\nu }_{\mu }$, Test of Lepton Flavor Universality and First Angular Analysis of $D^{+}\to {\bar{K}}^{\ast }(892{)}^0{\ell }^{+}{\nu }_{\ell }$
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