A. Berezhnoy

activity

19942026

J / ψ p

resonances consistent with pentaquark states in

Λ_{b}^{0} \to J / ψ K^{-} p

decays

1.3k citations · 30.3k across the 622 of their papers we have counts for

collaborators

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39 papers · 1 filter

hep-ph2026

$B_{(s)} \to V M_{X}$ decays as probes of dark-matter scenarios of Belle II enhancement in $B \to K M_{X}$ decays

Alexander Berezhnoy, Wolfgang Lucha, Dmitri Melikhov

Recently, we have shown that the hypothesis of the dark-matter (DM) origin of the Belle II excess events in $B \to K M_{X}$ decays allows for a successful description of the data. The…

hep-ph2025★ 3 cited

Scrutinizing dark-matter scenarios with $B \to (K, K^{*}) ν ˉ ν$ decays

Alexander Berezhnoy, Wolfgang Lucha, Dmitri Melikhov

Conceivable explanations of Belle-II measurements of a (surprising) excess of missing-energy decays of the $B$ meson to the $K$ meson not covered by standard-model neutrino-antineu…

hep-ph2025

Analysis of $B \to K M_{X}$ and $B \to K^{*} M_{X}$ decays in scalar- and vector-mediator dark-matter scenarios

Alexander Berezhnoy, Wolfgang Lucha, Dmitri Melikhov

The surprising excess of missing-energy events far beyond all standard-model expectations in the weak decays of the charged ground-state $B^{+}$ meson into some charged strange meson…

hep-ph2025★ 2 cited

Probing vector- vs scalar-mediator dark-matter scenarios in $B \to (K, K^{*}) M_{X}$ decays

Alexander Berezhnoy, Wolfgang Lucha, Dmitri Melikhov

Within the hypothesis of the dark-matter origin of the excess in $B \to K M_{X}$ decays over the standard-model expectation, observed by Belle-II, we show that: (i) Scalar- and vector…

hep-ph2025★ 12 cited

Analysis of $q_{rec}^{2}$ -distribution for $B \to K M_{X}$ and $B \to K^{*} M_{X}$ decays in a scalar-mediator dark-matter scenario

Alexander Berezhnoy, Wolfgang Lucha, Dmitri Melikhov

We demonstrate that the scalar-mediator dark-matter scenario is consistent with the experimental data on the decay $B \to K M_{X}$ and provides a good description of the shape of the…

hep-ph2024

Nonfactorizable charming-loop contribution to FCNC $B_{s} \to γ l^{+} l^{-}$ decay

Ilia Belov, Alexander Berezhnoy, Dmitri Melikhov

We present the first theoretical calculation of nonfactorizable charm-quark loop contributions to the $B_{s} \to γ l^{+} l^{-}$ amplitude. We calculate the relevant form factors, $H_{A,V}^{…

hep-ph2023★ 4 cited

Charming-loop contribution to $B_{s} \to γ γ$ decay

Ilia Belov, Alexander Berezhnoy, Dmitri Melikhov

We present a detailed theoretical study of nonfactorizable contributions of the charm-quark loop to the amplitude of the $B_{s} \to γ γ$ decay. This contribution involves the $B$ -mes…

hep-ph2023★ 33 cited

$B \to K^{*} M_{X}$ vs $B \to K M_{X}$ as a probe of a scalar-mediator dark matter scenario

Alexander Berezhnoy, Dmitri Melikhov

Recently, Belle II reported the observation of the decay $B \to K M_{X}$ , $M_{X}$ the missing mass, with the branching ratio much exceeding $B (B \to K ν ν ˉ)$ which is the only S…

hep-ph2023★ 5 cited

QCD one-loop correction to Higgs boson decay into quarkonium-pair

I. N. Belov, A. V. Berezhnoy, E. A. Leshchenko +1

Rare decays of the Higgs boson into quarkonia-pairs are studied within the framework of NRQCD approach. The main decay mechanisms and their interference are studied in detail. One-…

hep-ph2023

Associated quarkonia production in a single boson $e^{+} e^{-}$ annihilation

I. N. Belov, A. V. Berezhnoy, E. A. Leshchenko

The production cross sections of charmonia, charmonium-bottomonium and bottomonia pairs in a single boson $e^{+} e^{-}$ annihilation have been studied in a wide range of energies, which…

hep-ph2021★ 16 cited

Higgs boson decay to paired $B_{c}$ : relativistic and one-loop corrections

I. N. Belov, A. V. Berezhnoy, A. E. Dorokhov +3

The exclusive decays of the Higgs boson to $B_{c} B_{c}$ and $B_{c}^{*} B_{c}^{*}$ pairs are studied. The hard parts of the decay amplitudes are estimated within the perturbative Standar…

hep-ph2021★ 6 cited

Associated charmonium-bottomonium production in a single boson $e^{+} e^{-}$ annihilation

I. N. Belov, A. V. Berezhnoy, E. A. Leshchenko

The production cross sections of $J / ψ η_{b}$ , $Υ η_{c}$ pairs in a single boson $e^{+} e^{-}$ annihilation have been studied in a wide range of energies, which will be achieved at future $…

hep-ph2021★ 3 cited

Production of $D$ -wave states of $b ˉ c$ quarkonium at the LHC

A. V. Berezhnoy, I. N. Belov, A. K. Likhoded

The hadronic production of $D$ -wave states of $b ˉ c$ is studied. The relative yield of such states is estimated for kinematic conditions of LHC experiments.

hep-ph2021★ 7 cited

One-loop corrections to the processes $e^{+} e^{-} \to γ, Z \to J / ψ η_{c}$ and $e^{+} e^{-} \to Z \to J / ψ J / ψ$

A. V. Berezhnoy, I. N. Belov, S. V. Poslavsky +1

The cross section values of $J / ψ η_{c}$ and $J / ψ J / ψ$ production in $e^{+} e^{-}$ annihilation are estimated within one-loop approximation near $Z$ pole, as well as at higher energies. Bo…

hep-ph2020★ 1 cited

The production of excited states of doubly heavy baryons at the Large Hadron Collider

A. V. Berezhnoy, I. N. Belov, A. K. Likhoded

In the framework of diquark model for production we discuss the yields and observation prospects for excited states of doubly heavy baryons at LHC kinematic conditions.

hep-ph2019★ 18 cited

$B_{c}$ excitations at LHC experiments

A. V. Berezhnoy, I. N. Belov, A. K. Likhoded +1

The $2 S$ $B_{c}$ states observed by ATLAS, CMS and LHCb Collaborations are discussed. The observation perspectives of $B_{c}^{*}$ , $2 P$ wave, $3 P$ wave and $D$ wave states of $B_{c}$ at LH…

hep-ph2019★ 11 cited

Exclusive double $B_{c}$ meson production from $e^{+} e^{-}$ annihilation into two virtual photons

A. V. Berezhnoy, A. P. Martynenko, F. A. Martynenko +1

We calculate cross sections of a pair $B_{c}$ meson production on the basis of two-photon mechanism from electron-positron annihilation. We investigate the production cross sections…

hep-ph2018★ 11 cited

Production of double charmed baryons with the excited heavy diquark at LHC

A. V. Berezhnoy, I. N. Belov, A. K. Likhoded

The yield of doubly charmed baryons with excited heavy diquark in $S$ wave and $P$ wave states has been estimated at LHC energies. The observation possibility of such baryons is di…

hep-ph2018★ 58 cited

Doubly heavy baryons at LHC

A. V. Berezhnoy, A. K. Likhoded, A. V. Luchinsky

The theoretical analysis of production, lifetime, and decays of doubly heavy baryons is presented. The lifetime of $Ξ_{cc}^{++}$ baryon recently measured by the LHCb Collaboration…

hep-ph2017★ 25 cited

Quark-diquark structure and masses of doubly charmed baryons

V. V. Kiselev, A. V. Berezhnoy, A. K. Likhoded

The finite size of doubly heavy diquark gives a positive correction to the masses of baryons calculated in the local diquark approximation. We evaluate this correction for the basi…

hep-ph2017★ 3 cited

Comments on "Study of $J / ψ$ production in jets"

I. Belyaev, A. V. Berezhnoy, A. K. Likhoded +1

Recent LHCb measurements of the $J / ψ$ meson production in jets is analyzed using fragmentation jet function formalism. It is shown that disagreement with theoretical predictions fo…

hep-ph2015★ 10 cited

Associative production of $Υ$ and open charm at LHC

A. V. Berezhnoy, A. K. Likhoded

The yield of $Υ$ associated with open charm has been estimated with different approaches. The crucial differences between SPS and DPS predictions are discussed.

hep-ph2013★ 4 cited

The relative yields of heavy hadrons as function of transverse momentum at LHC experiments

A. V. Berezhnoy, A. K. Likhoded

It is shown that the dependence of ratio $f_{s} / f_{d}$ could be understood within the fragmentation approach. However, the validity of fragmentation model is questionable at low $p_{T}$ ,…

hep-ph2012★ 35 cited

Associated production of $J / ψ$ -mesons and open charm and double open charm production at the LHC

A. V. Berezhnoy, A. K. Likhoded, A. V. Luchinsky +1

Theoretical predictions of cross sections and properties of the $J / ψ$ -meson production in association with an open charm hadron and formation of two open charm hadrons from two $c\…

B(s)​→VMX​ decays as probes of dark-matter scenarios of Belle II enhancement in B→KMX​ decays

Scrutinizing dark-matter scenarios with B→(K,K∗)νˉν decays

Analysis of B→KMX​ and B→K∗MX​ decays in scalar- and vector-mediator dark-matter scenarios

Probing vector- vs scalar-mediator dark-matter scenarios in B→(K,K∗)MX​ decays

Analysis of qrec2​-distribution for B→KMX​ and B→K∗MX​ decays in a scalar-mediator dark-matter scenario

Nonfactorizable charming-loop contribution to FCNC Bs​→γl+l− decay

Charming-loop contribution to Bs​→γγ decay

B→K∗MX​ vs B→KMX​ as a probe of a scalar-mediator dark matter scenario

QCD one-loop correction to Higgs boson decay into quarkonium-pair

Associated quarkonia production in a single boson e+e− annihilation

Higgs boson decay to paired Bc​: relativistic and one-loop corrections

Associated charmonium-bottomonium production in a single boson e+e− annihilation

Production of D-wave states of bˉc quarkonium at the LHC

One-loop corrections to the processes e+e−→γ,Z→J/ψ ηc​ and e+e−→Z→J/ψ J/ψ

The production of excited states of doubly heavy baryons at the Large Hadron Collider

Bc​ excitations at LHC experiments

Exclusive double Bc​ meson production from e+e− annihilation into two virtual photons

Production of double charmed baryons with the excited heavy diquark at LHC

Doubly heavy baryons at LHC

Quark-diquark structure and masses of doubly charmed baryons

Comments on "Study of J/ψ production in jets"

Associative production of Υ and open charm at LHC

The relative yields of heavy hadrons as function of transverse momentum at LHC experiments

Associated production of J/ψ-mesons and open charm and double open charm production at the LHC

$B_{(s)} \to V M_{X}$ decays as probes of dark-matter scenarios of Belle II enhancement in $B \to K M_{X}$ decays

Scrutinizing dark-matter scenarios with $B \to (K, K^{*}) ν ˉ ν$ decays

Analysis of $B \to K M_{X}$ and $B \to K^{*} M_{X}$ decays in scalar- and vector-mediator dark-matter scenarios

Probing vector- vs scalar-mediator dark-matter scenarios in $B \to (K, K^{*}) M_{X}$ decays

Analysis of $q_{rec}^{2}$ -distribution for $B \to K M_{X}$ and $B \to K^{*} M_{X}$ decays in a scalar-mediator dark-matter scenario

Nonfactorizable charming-loop contribution to FCNC $B_{s} \to γ l^{+} l^{-}$ decay

Charming-loop contribution to $B_{s} \to γ γ$ decay

$B \to K^{*} M_{X}$ vs $B \to K M_{X}$ as a probe of a scalar-mediator dark matter scenario

Associated quarkonia production in a single boson $e^{+} e^{-}$ annihilation

Higgs boson decay to paired $B_{c}$ : relativistic and one-loop corrections

Associated charmonium-bottomonium production in a single boson $e^{+} e^{-}$ annihilation

Production of $D$ -wave states of $b ˉ c$ quarkonium at the LHC

One-loop corrections to the processes $e^{+} e^{-} \to γ, Z \to J / ψ η_{c}$ and $e^{+} e^{-} \to Z \to J / ψ J / ψ$

$B_{c}$ excitations at LHC experiments

Exclusive double $B_{c}$ meson production from $e^{+} e^{-}$ annihilation into two virtual photons

Comments on "Study of $J / ψ$ production in jets"

Associative production of $Υ$ and open charm at LHC

Associated production of $J / ψ$ -mesons and open charm and double open charm production at the LHC