Model-independent bounds on new physics effects in non-leptonic tree-level decays of B-mesons

@article{Lenz2020ModelindependentBO,
  title={Model-independent bounds on new physics effects in non-leptonic tree-level decays of B-mesons},
  author={Alexander Lenz and Gilberto Tetlalmatzi-Xolocotzi},
  journal={Journal of High Energy Physics},
  year={2020}
}
Abstract We present a considerably improved analysis of model-independent bounds on new physics effects in non-leptonic tree-level decays of B-mesons. Our main finding is that contributions of about ±0.1 to the Wilson coefficient of the colour-singlet operator Q2 of the effective weak Hamiltonian and contributions in the range of ±0.5 (both for real and imaginary part) to Q1 can currently not be excluded at the 90% C.L. . Effects of such a size can modify the direct experimental extraction of… 
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References

SHOWING 1-10 OF 286 REFERENCES
New physics effects in tree-level decays and the precision in the determination of the quark mixing angle γ
We critically review the assumption that no new physics is acting in tree-level B-meson decays and study the consequences for the ultimate precision in the direct determination of the
Reassessing the discovery potential of the B → K*ℓ⁺ℓ⁻ decays in the large-recoil region: SM challenges and BSM opportunities
We critically examine the potential to disentangle Standard Model (SM) and New Physics (NP) in $B \to K^* \mu^+\mu^-$ and $B\to K^* e^+ e^-$ decays, focusing on $(i)$ the LHCb anomaly, $(ii)$ the
Weak annihilation and new physics in charmless $B \to M M$ decays
We use currently available data of nonleptonic charmless 2-body $B\to MM$ decays ($MM = PP, PV, VV$) that are mediated by $b\to (d, s)$ QCD- and QED-penguin operators to study weak annihilation and
B -> V_L V_L Decays at Next-to-Leading Order in QCD
We compute the amplitudes for the two-body decay of $B$ mesons into longitudinally polarized light vector mesons at next-to-leading order in QCD. We give the explicit expressions in QCD factorization
Charming new B-physics
Abstract We give a comprehensive account of the flavour physics of Beyond-Standard-Model (BSM) effects in b → c$$ \overline{c} $$ c ¯ cs transitions, considering the full set of 20 four-quark
New Physics in $b \rightarrow s \mu^+ \mu^-$: Distinguishing Models through CP-Violating Effects
At present, there are several measurements of $B$ decays that exhibit discrepancies with the predictions of the SM, and suggest the presence of new physics (NP) in $b \to s \mu^+ \mu^-$ transitions.
Implications for new physics in $$b\rightarrow s \mu \mu $$ transitions after recent measurements by Belle and LHCb
We present a Bayesian analysis of the implications for new physics in semileptonic $$b\rightarrow s$$b→s transitions after including new measurements of $$R_K$$RK at LHCb and new determinations of
$B -> X_d \gamma$ and constraints on new physics
We combine recent progress in measuring the branching ratio of the decay B->X_d gamma$ with the discovery that hadronic uncertainties in the CP-averaged branching ratio drop out to a large extent.
$B \to V \gamma$ beyond QCD factorisation
We calculate the main observables in $B_{u,d}\to (\rho,\omega,K^*)\gamma$ and $B_s\to (\bar K^*,\phi)\gamma$ decays, i.e. branching ratios and CP and isospin asymmetries. We include QCD factorisation
A model-independent analysis of $b \to s \mu^{+} \mu^{-}$ transitions with GAMBIT's FlavBit
The search for flavour-changing neutral current effects in $B$-meson decays is a powerful probe of physics beyond the Standard Model. Deviations from SM behaviour are often quantified by extracting
...
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