A. Kozachuk

activity

20152024

most citedEvidence for exotic hadron contributions to

Λ_{b}^{0} \to J / ψ p π^{-}

decays

154 citations · 1.8k across the 78 of their papers we have counts for

collaborators

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9 papers · 1 filter

hep-ph2020★ 4 cited

Constraints on the anomalous $W t b$ couplings from $B$ -physics experiments

Anastasiia Kozachuk, Dmitri Melikhov

We analyze constraints on the anomalous $W t b$ couplings from $B$ -physics experiments, performing a correlated analysis and allowing all anomalous couplings to differ simultaneously…

hep-ph2018★ 1 cited

Long-distance QCD effects in FCNC $B \to γ l^{+} l^{-}$ decays

Anastasiia Kozachuk, Dmitri Melikhov, Nikolai Nikitin

This presentation reviews the main results of our recent work [A.K., D.M., N.N., Phys. Rev. D97, 053007 (2018)] on rare radiative leptonic decays $B_{d, s} \to γ μ^{+} μ^{-}$ and $B_{d,s}\t…

hep-ph2018★ 15 cited

Revisiting nonfactorizable charm-loop effects in exclusive FCNC $B$ -decays

Anastasiia Kozachuk, Dmitri Melikhov

We revisit the calculation of nonfactorizable corrections induced by charm-quark loops in exclusive FCNC $B$ -decays. For the sake of clarity, we make use of a field theory with sca…

hep-ph2017★ 39 cited

Rare FCNC radiative leptonic $B_{s, d} \to γ l^{+} l^{-}$ decays in the Standard Model

Anastasiia Kozachuk, Dmitri Melikhov, Nikolai Nikitin

We revisit rare radiative leptonic decays $B_{s, d} \to γ e^{+} e^{-}$ and $B_{s, d} \to γ μ^{+} μ^{-}$ in the Standard Model and provide the updated estimates for various differential distributio…

hep-ph2017

Rare FCNC radiative leptonic decays $B \to γ ℓ^{+} ℓ^{-}$

Dmitri Melikhov, Anastasiia Kozachuk, Nikolai Nikitin

We present our recent results for long-distance QCD effects in the FCNC radiative leptonic decays $B \to γ ℓ^{+} ℓ^{-}$ , $ℓ = {e, μ}$ . One encounters here two distinct types of lon…

hep-ph2016

Form factors and differential distributions in rare radiative leptonic B-decays

Anastasiia Kozachuk, Nikolai Nikitin

We study rare radiative leptonic decays $B_{(s)} \to e^{+} e^{-} γ$ and $B_{(s)} \to μ^{+} μ^{-} γ$ within relativistic quark model. In addition to previous analysis we give the estimations of t…

hep-ph2016

Weak annihilation rare radiative B-decays

Anastasiia Kozachuk, Nikolai Nikitin

We give predictions for the branching ratios of several rare radiative B-decays which proceed only through weak annihilation mechanism. In addition to previous analysis we estimate…

hep-ph2016★ 5 cited

Rare radiative leptonic B-decays

Anastasiia Kozachuk, Dmitri Melikhov, Nikolai Nikitin

We obtain predictions for $B_{(s)} \to e^{+} e^{-} γ$ and $B_{(s)} \to μ^{+} μ^{-} γ$ decays. All the contributions containing long-distance QCD effects are calculated in the framework of relati…

hep-ph2015

Weak-annihilation rare radiative decays of B-mesons

Anastasiia Kozachuk

In this talk, we present the predictions for a number of radiative decays $B_{(s)} \to V γ$ , with the vector meson in the final state, which proceed through the weak-annihilation mec…

Constraints on the anomalous Wtb couplings from B-physics experiments

Long-distance QCD effects in FCNC B→γl+l− decays

Revisiting nonfactorizable charm-loop effects in exclusive FCNC B-decays

Rare FCNC radiative leptonic Bs,d​→γl+l− decays in the Standard Model

Rare FCNC radiative leptonic decays B→γℓ+ℓ−

Form factors and differential distributions in rare radiative leptonic B-decays

Weak annihilation rare radiative B-decays

Rare radiative leptonic B-decays

Weak-annihilation rare radiative decays of B-mesons

Constraints on the anomalous $W t b$ couplings from $B$ -physics experiments

Long-distance QCD effects in FCNC $B \to γ l^{+} l^{-}$ decays

Revisiting nonfactorizable charm-loop effects in exclusive FCNC $B$ -decays

Rare FCNC radiative leptonic $B_{s, d} \to γ l^{+} l^{-}$ decays in the Standard Model

Rare FCNC radiative leptonic decays $B \to γ ℓ^{+} ℓ^{-}$