Constraining New Physics with D meson decays

Abstract

Latest Lattice results on $D$ form factors evaluation from first principles show that the standard model (SM) branching ratios prediction for the leptonic $D_s\to \ell {\nu }_{\ell }$ decays and the semileptonic SM branching ratios of the $D^0$ and $D^{+}$ meson decays are in good agreement with the world average experimental measurements. It is possible to disprove New Physics hypothesis or find bounds over several models beyond the SM. Using the observed leptonic and semileptonic branching ratios for the D meson decays, we performed a combined analysis to constrain non standard interactions which mediate the $c\bar{s}\to l\bar{\nu }$ transition. This is done either by a model independent way through the corresponding Wilson coefficients or in a model dependent way by finding the respective bounds over the relevant parameters for some models beyond the standard model. In particular, we obtain bounds for the Two Higgs Doublet Model Type-II and Type III, the Left-Right model, the Minimal Supersymmetric Standard Model with explicit R-Parity violation and Leptoquarks. Finally, we estimate the transverse polarization of the lepton in the $D^0$ decay and we found it can be as high as $P_T=0.23$.

28 pages, 8 figures, 3 tables. Improved and extended analysis with updated form factors from Lattice QCD

References in corpus (9)

• Observation of a new particle in the search for the Standard Model Higgs boson with the ATLAS detector at the LHC
• Observation of a new boson at a mass of 125 GeV with the CMS experiment at the LHC
• New physics in the weak interaction of $\bar{B}\to D^{(\ast )}\tau \bar{\nu }$
• Update: Precision D_s decay constant from full lattice QCD using very fine lattices
• Constraints on two-lepton, two quark operators
• Accumulating evidence for nonstandard leptonic decays of D_s mesons
• Bounds on R-parity violating supersymmetric couplings from leptonic and semi-leptonic meson decays
• Measurement of B(Ds -> munu)
• Lifetime Difference in B_s mixing: Standard Model and beyond

Cited by in corpus (11)

• Charm Physics Confronts High-$p_T$ Lepton Tails
• Measurements of branching fractions of leptonic and hadronic Ds+ meson decays and extraction of the Ds+ meson decay constant
• Discerning new physics in charm meson leptonic and semileptonic decays
• $\bar{B}\to D^{(\ast )}\tau \bar{\nu }$ excesses in ALRSM constrained from $B$, $D$ decays and $D^0-{\bar{D}}^0$ mixing
• Investigation of Effects of New Physics in $c\to (s,d){\ell }^{+}{\nu }_{\ell }$ Transitions
• Probing the R-parity violating supersymmetric effects in the exclusive $c\to d/s\ell {\nu }_{\ell }$ decays
• D meson semileptonic decays in lattice QCD with Moebius domain-wall quarks
• Interplay between neutrino magnetic moments and $CP$ violating phases in left-right models
• Two Higgs doublet model and leptoquarks constraints from D meson decays
• Model Dependent Analysis of D_((s))^+ arrows η^((')) l^+ ν_l Decays in Beyond Standard Model
• Observation of $D^{+}\to K_S^0{\pi }^0{\mu }^{+}{\nu }_{\mu }$, Test of Lepton Flavor Universality and First Angular Analysis of $D^{+}\to {\bar{K}}^{\ast }(892{)}^0{\ell }^{+}{\nu }_{\ell }$