The new physics reach of null tests with $$D \rightarrow \pi \ell \ell $$ and $$D_s \rightarrow K \ell \ell $$ decays
@article{Bause2019TheNP, title={The new physics reach of null tests with \$\$D \rightarrow \pi \ell \ell \$\$ and \$\$D\_s \rightarrow K \ell \ell \$\$ decays}, author={Rigo Bause and Marcel Golz and Gudrun Hiller and Andrey Tayduganov}, journal={European Physical Journal C}, year={2019}, volume={80}, pages={65} }
$$|\Delta c|=|\Delta u|=1$$ processes are unique probes of flavor physics in the up-sector within and beyond the Standard Model (SM). SM tests with rare semileptonic charm meson decays are based on an approximate CP–symmetry, a superior GIM–mechanism, angular distributions, lepton-universality and lepton flavor conservation. We analyze the complete set of null test observables in $$D \rightarrow \pi \ell \ell ^{(\prime )}$$ and $$D_s \rightarrow K \ell \ell ^{(\prime )}$$ decays, $$\ell…
18 Citations
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Abstract
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D
s
+
→
h…
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References
SHOWING 1-10 OF 62 REFERENCES
Null tests from angular distributions in D→P1P2l+l− , l=e , μ decays on and off peak
- PhysicsPhysical Review D
- 2018
We systematically analyze the full angular distribution in $D \to P_1 P_2 l^+ l^-$ decays, where $P_{1,2}=\pi,K$, $l=e,\mu$. We identify several null tests of the standard model (SM). Notably, the…
The photon polarization in radiative D decays, phenomenologically
- Physics
- 2018
We work out the phenomenology of untagged time-dependent analysis with radiative $$D^0$$D0-decays into CP eigenstates, which allows to probe the photon polarization by means of the charm mesons’…
Standard Model prediction and new physics tests for $ {D^0}\to h_1^{+}h_2^{-}{\ell^{+}}{\ell^{-}}\left( {h=\pi, K;\ell =e,\mu } \right) $
- Physics
- 2012
A bstractMotivated by the recent evidence for direct CP-violation in D0 → h+h− decays, we provide an exhaustive study of both Cabibbo-favored and Cabibbo-suppressed (singly and doubly) $ {D^0}\to…
High-$$p_T$$pT dilepton tails and flavor physics
- Physics
- 2017
We investigate the impact of flavor-conserving, non-universal quark-lepton contact interactions on the dilepton invariant mass distribution in $$p~p \rightarrow \ell ^+ \ell ^-$$pp→ℓ+ℓ- processes at…
Prospects of discovering new physics in rare charm decays
- Physics
- 2015
The LHCb bounds on the branching ratio of the rare decay $$D^0 \rightarrow \mu ^+ \mu ^-$$D0→μ+μ- and the constraints on the branching ratio of $$D^+ \rightarrow \pi ^+ \mu ^+ \mu ^-$$D+→π+μ+μ- in…
Tensor form factor of D→π(K)ℓν and D→π(K)ℓℓ decays with Nf=2+1+1 twisted-mass fermions
- PhysicsPhysical Review D
- 2018
We present the first lattice Nf=2+1+1 determination of the tensor form factor $f_T^{D \pi(K)}(q^2)$ corresponding to the semileptonic and rare $D \to \pi(K)$ decays as a function of the squared…
Resonance catalyzed CP asymmetries in D→Pℓ$^+$ℓ$^-$
- Physics
- 2013
Recently observed increase of direct CP asymmetry in charm meson nonleptonic decays is difficult to explain within the SM. If this effect is induced by new physics, this might be investigated in…
Scalar and vector form factors of $D \to \pi(K) \ell \nu$ decays with $N_f=2+1+1$ twisted fermions
- Physics
- 2017
We present a lattice determination of the vector and scalar form factors of the $D \to \pi(K) \ell \nu$ semileptonic decays, which are relevant for the extraction of the CKM matrix elements…
Rare radiative charm decays within the standard model and beyond
- Physics
- 2017
A bstractWe present standard model (SM) estimates for exclusive c → uγ processes in heavy quark and hybrid frameworks. Measured branching ratios ℬD0→ϕK¯∗0γ$$ \mathrm{\mathcal{B}}\left({D}^0\to\…
Decays $D^+_{(s)}\to \pi(K)^{+}\ell^+\ell^-$ and D0→ℓ+ℓ- in the MSSM with and without R-parity
- Physics
- 2015
We study the rare decays D+→π+l+l-, and D0→l+l-(l = e, μ) in the minimal supersymmetic standard model with and without R-parity. Using the strong constraints on relevant supersymmetric parameters…