Rare radiative charm decays within the standard model and beyond

  title={Rare radiative charm decays within the standard model and beyond},
  author={Stefan de Boer and Gudrun Hiller},
  journal={Journal of High Energy Physics},
  • S. Boer, G. Hiller
  • Published 23 January 2017
  • Physics
  • Journal of High Energy Physics
A bstractWe present standard model (SM) estimates for exclusive c → uγ processes in heavy quark and hybrid frameworks. Measured branching ratios ℬD0→ϕK¯∗0γ$$ \mathrm{\mathcal{B}}\left({D}^0\to\ \left(\phi, {\overline{K}}^{\ast 0}\right)\gamma \right) $$ are at or somewhat exceeding the upper range of the SM and suggest slow convergence of the 1/mD, αs-expansion. Model-independent constraints on |ΔC| = | ΔU | = 1 dipole operators from ℬ(D0 → ρ0γ) data are obtained. Predictions and implications… 
Charm CP: $\Delta A_{CP}$ and Radiative decays
Motivated by the very important discovery of CP violation in charm-decays for the first time, by the LHCb collaboration, the role of nearby resonances such as the scalar $f_0(1710)$ in accounting for
Probing QCD dynamics and the standard model with $$ {D}_{(s)}^{+}\to {P}_1^{+}{P}_2^0\gamma $$ decays
We compute 10 radiative three-body decays of charged charmed mesons D → PP γ and Ds → PP γ, P = π,K, in leading order QCDF, HHχPT and the soft photon approximation. We work out decay distributions
Probing the standard model with rare charm decays
This thesis comprises a study of rare charm decays in the standard model (SM) and beyond. Within an effective theory framework, we calculate the SM Wilson coefficients to (partly) next-to-next-to
Rare B, D and K decays, radiative and electroweak penguin decays, including constraints on $V_{td}/V_{ts}$ and $\epsilon'/\epsilon$: Summary of CKM 2018 working group 3.
Rare $B$, $D$ and $K$ decays provide interesting probes of the Standard Model (SM), with a potential sensitivity to New Physics (NP) higher than other, more common, decays. Their experimental
The photon polarization in radiative D decays, phenomenologically
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’
Resonance enhancement of Charm CP.
It is suggested that a nearby $0^{++}$ resonance, $f_0$(1710) of mass $m_f=1723 MeV$ and width $\Gamma=139$ MeV is playing a significant role in efficiently providing the strong (CP-conserving) and
Rare radiative charm decays in the standard model and beyond
Motivated by the recent measurement of $D^0\to\rho^0\gamma$ improved standard model (SM) predictions for branching ratios and CP asymmetries of radiative charm decay are given. Weak annihilation
Fe b 20 20 The D → ρ semileptonic and radiative decays within the light-cone sum rules
The measured branching ratio of the D meson semileptonic decay D → ρeνe, which is based on the 0.82 fb CLEO data taken at the peak of ψ(3770) resonance, disagrees with the traditional SVZ sum rules
Null tests from angular distributions in D→P1P2l+l− , l=e , μ decays on and off peak
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
Exploring new physics contributions to CP violation in $$\tau ^- \rightarrow K^-\pi ^0\nu _{\tau } $$ τ - →
A general analysis of possible violation of CP in processes like $$\tau \rightarrow K\pi \nu $$ τ → K π ν , for unpolarized $$\tau $$ τ is presented. In this paper, we derive the new contributions to


Flavor and new physics opportunities with rare charm decays into leptons
Updated standard model predictions for $D_{(s)} \to P l^+ l^-$, $l=e,\mu$, $P=\pi,K$ and inclusive decays are presented. Model-independent constraints on $|\Delta C|=|\Delta U|=1$ Wilson coefficients
Long distance c ---> u gamma effects in weak radiative decays of D mesons
We present a detailed analysis of the D{r_arrow}V{gamma} transitions, using a model which combines heavy quark effective theory and the chiral Lagrangian approach and includes symmetry breaking. We
Weak annihilation and the effective parameters a 1 and a 2
Based on SU(3) flavor symmetry, many of the quark-graph amplitudes in two-body non-leptonic decays of charmed mesons can be extracted from experiment, which enable us to see the relevance and
B →Vℓ+ℓ− in the Standard Model from light-cone sum rules
A bstractWe present Bq → ρ, Bq → ω, Bq → K∗, Bs → K∗ and Bs → ϕ form factors from light-cone sum rules (LCSR) at Oαs$$ \mathcal{O}\left({\alpha}_s\right) $$ for twist-2 and 3 and Oαs0$$
Weak annihilation and the effective parameters a1 and a2 in non-leptonic D decays
Abstract. Based on SU(3) flavor symmetry, many of the quark-graph amplitudes in two-body non-leptonic decays of charmed mesons can be extracted from experiment, which enable us to see the relevance
Exclusive non-leptonic decays ofD-,Ds- andB-mesons
AbstractRecent experimental results onD-,Ds- andB-decays are interpreted on the basis of the valence quark model. For nonleptonic decays generally good results are obtained using factorization with
Direct CP violation in charm and flavor mixing beyond the SM
A bstractWe analyze possible interpretations of the recent LHCb evidence for CP violation in D meson decays in terms of physics beyond the Standard Model. On general grounds, models in which the
Shedding light on CP violation in the charm system via D→Vγ decays.
It is shown that in new physics models generating CP violating ΔC=1 chromomagnetic dipole operators, sizable direct CP asymmetries in radiative D→P(+)P(-)γ decays (P=π, K), with M(PP) close to the ρ or the φ peak, can be expected.
On $D\to X_u l^+ l^-$ within the Standard Model and Frameworks like the Littlest Higgs Model with T Parity
The D → Xul + l − transitions - branching ratios, forward-backward asymmetry A c, the CP asymmetry A c and the CP asymmetry in the forward-backward asymmetry A CP - have two sources: for D ± they
Leptoquark flavor patterns & B decay anomalies
A bstractFlavor symmetries that explain masses and mixings of the standard model fermions dictate flavor patterns for the couplings of scalar and vector leptoquarks to the standard model fermions. A