A. Korchin

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20102026

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Radiative Decay Width

106 citations · 321 across the 25 of their papers we have counts for

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hep-ph2026

Spin correlations in the $τ$ -lepton pair in polarized electron-positron annihilation

A. Yu. Korchin, Z. Was

Possible anomalous New Physics contributions to dipole and weak dipole moments of the $τ$ lepton rise considerable interest in theoretical and experimental studies of the $τ$ -pair…

hep-ph2026

Spin effects in the tau-lepton pair induced by anomalous magnetic and electric dipole moments

A. Yu. Korchin

The possible anomalous New Physics contributions to magnetic and electric dipole moments of the $τ$ lepton have brought renewed interest in studying $τ$ -pair production at energies…

hep-ph2026

TauSpinner algorithms for including spin and New Physics effects in $q ˉ q \to Z / γ^{*} \to τ τ$ process

A. Yu. Korchin, E. Richter-Was, Z. Was

The possible anomalous New Physics contributions to dipole and weak dipole moments of the $τ$ lepton bring renewed interest in development and revisiting charge-parity violating si…

hep-ph2025

Determination of the sensitivity of $Λ$ and $Λ_{c}^{+}$ electric dipole moments using a full angular analysis

R. T. Ovsiannikov, A. Yu. Korchin, E. Kou

A search for a non-zero Electric Dipole Moment (EDM) of particles, which is a clear signal of a violation of CP symmetry, is one of the unique ways to discover physics beyond the S…

hep-ph2025

TauSpinner algorithms for including spin and New Physics effects in $γ γ \to τ τ$ process

A. Yu. Korchin, E. Richter-Was, Z. Was

The possible anomalous New Physics contributions to electric and magnetic dipole moments of the $τ$ lepton has brought renewed interest in development of new charge-parity violatin…

hep-ph2024

$τ$ -lepton pair spin in proton-proton LHC collisions for anomalous dipole moments

A. Yu. Korchin, E. Richter-Was, Yu. Volkotrub +1

The spin correlations in the pair of $τ$ leptons produced in the high-energy proton-proton collisions are studied. The invariant mass of the $τ$ -lepton pair is chosen close to $Z$ -…

hep-ph2023

Decay of the Higgs boson to longitudinally polarized leptons and quarks

R. T. Ovsiannikov, A. Yu. Korchin

An important problem in the particle physics is interaction of the Higgs boson with the fermions. It is in the processes, which involve $h f f$ interaction, the manifestations of…

hep-ph2023★ 7 cited

Electron-positron, parton-parton and photon-photon production of $τ$ -lepton pairs: anomalous magnetic and electric dipole moments spin effects

Sw. Banerjee, A. Yu. Korchin, E. Richter-Was +1

Anomalous contributions to the electric and magnetic dipole moments of the $τ$ lepton from new physics scenarios have brought renewed interest in the development of new charge-pari…

hep-ph2022★ 6 cited

Spin correlations in $τ$ -lepton pair production due to anomalous magnetic and electric dipole moments

Sw. Banerjee, A. Yu. Korchin, Z. Was

We present a simple algorithm for the calculation of event weights embedding the effects of anomalous electric and magnetic dipole moments in simulation of $e^{-} e^{+} \to τ^{-} τ^{+} (nγ)$ …

hep-ph2021★ 2 cited

Energy correlation of bottom quarks from decays of top quarks in electron $-$ positron annihilation

Ivan V. Truten, Alexander Yu. Korchin

Joint energy distribution of the bottom quark and antiquark from decays of the top quark and antiquark produced in the reaction $e^{+} e^{-} \to t t ˉ$ is studied. Main emphasis is…

hep-ph2021★ 4 cited

Decay of the Higgs boson $h \to τ^{-} τ^{+} \to π^{-} ν_{τ} π^{+} ν ˉ_{τ}$ for a non-Hermitian Yukawa interaction

A. Yu. Korchin, V. A. Kovalchuk

The differential rate of the decay of the Higgs boson ( $h$ ) to a pair of $τ$ leptons with their subsequent decay in the $τ^{-} \to π^{-} ν_{τ}$ and $τ^{+} \to π^{+} ν ˉ_{τ}$ channels is stud…

hep-ph2020★ 1 cited

Energy and angular distributions of the bottom quark in the electron-positron annihilation $e^{+} e^{-} \to b W^{+} t ˉ$

I. V. Truten, A. Yu. Korchin

The distributions of the bottom quark in the process $e^{+} e^{-} \to t t ˉ \to b W^{+} t ˉ$ are considered at the $e^{+} e^{-}$ energy corresponding to the first constructi…

hep-ph2020

Higgs boson decay to lepton pair and photon and possible non-Hermiticity of the Yukawa interaction

V. A. Kovalchuk, A. Yu. Korchin

The production of lepton pairs in the Higgs boson decay $h \to ℓ^{+} ℓ^{-} γ$ is studied. The emphasis is put on the structure of the Higgs boson interaction with the fermions. T…

hep-ph2019★ 22 cited

The prospect of charm quark magnetic moment determination

A. S. Fomin, S. Barsuk, A. Yu. Korchin +7

In this paper, we discuss the theoretical framework and the experimental measurements of the magnetic moment of the charm baryons. The $Λ_{c}^{+}$ magnetic moment is particularly inter…

hep-ph2019★ 5 cited

The top-quark polarization beyond the Standard Model in electron-positron annihilation

I. V. Truten, A. Yu. Korchin

Electron-positron annihilation into a pair of top quarks is considered at the energy of the future collider CLIC. Polarization components of the top quark are calculated with the $…

hep-ph2018★ 29 cited

Feasibility of tau lepton electromagnetic dipole moments measurement using bent crystal at the LHC

A. S. Fomin, A. Yu. Korchin, A. Stocchi +2

In this paper we discuss the possibility of measuring the anomalous magnetic and electric dipole moments of the $τ$ lepton. The method consists in studying the spin precession indu…

hep-ph2018★ 7 cited

Higgs boson $Z Z$ couplings in Higgs-strahlung at the ILC

Taras V. Zagoskin, Alexander Yu. Korchin

We derive the fully differential cross section of the Higgs-strahlung process $f f ˉ \to Z \to Z (\to f_{Z} f ˉ_{Z}) X (\to f_{X} f ˉ_{X})$ , where $f$ , $f_{Z}$ , and $f_{X}$ are arb…

hep-ph2017★ 38 cited

Feasibility of measuring the magnetic dipole moments of the charm baryons at the LHC using bent crystals

A. S. Fomin, A. Yu. Korchin, A. Stocchi +9

In this paper we revisit the idea of measuring the magnetic dipole moments of the charm baryons and, in particular, of charmed Lambda by studying the spin precession induced by the…

hep-ph2017★ 4 cited

The Higgs boson decay into ZZ decaying to identical fermion pairs

Taras V. Zagoskin, Alexander Yu. Korchin

In order to investigate various decay channels of the Higgs boson $h$ or the hypothetical dilaton, we consider a neutral particle $X$ with zero spin and arbitrary $C P$ parity. This…

hep-ph2016★ 16 cited

Decay of the Higgs boson to $τ^{-} τ^{+}$ and non-Hermiticity of the Yukawa interaction

Alexander Yu. Korchin, Vladimir A. Kovalchuk

The issue of Hermiticity of the Higgs boson interaction with fermions is addressed. A model for non-Hermitian Yukawa interaction is proposed and approximation of one fermion genera…

hep-ph2015★ 5 cited

Decays of a neutral particle with zero spin and arbitrary CP parity into two off-mass-shell Z bosons

Taras V. Zagoskin, Alexander Yu. Korchin

Effects are investigated of CP symmetry violation in the decay of a scalar particle X (the Higgs boson) into two off-mass-shell Z bosons both decaying into a fermion-antifermion pa…

hep-ph2014★ 29 cited

Angular distribution and forward-backward asymmetry of the Higgs-boson decay to photon and lepton pair

Alexander Yu. Korchin, Vladimir A. Kovalchuk

The Higgs-boson decay h -> gamma l+ l- for various lepton states l = (e, mu, tau) is analyzed. The differential decay width and forward-backward asymmetry are calculated as functio…

hep-ph2013★ 26 cited

Polarization effects in the Higgs boson decay to gamma Z and test of CP and CPT symmetries

Alexander Yu. Korchin, Vladimir A. Kovalchuk

Polarization characteristics of gamma gamma and gamma Z states in the Higgs boson decays h -> gamma gamma and h -> gamma Z are discussed. Based on effective Lagrangian, describing…

hep-ph2012★ 7 cited

Contribution of vector resonances to the {\bar B}_d^0 -> {\bar K}^{*0} mu^+ mu^- decay

Alexander Yu. Korchin, Vladimir A. Kovalchuk

The fully differential angular distribution for the rare flavor-changing neutral current decay \bar{B}_d^0 -> \bar{K}^{*0} (-> K- pi+) mu+ mu- is studied. The emphasis is placed on…

Spin correlations in the τ-lepton pair in polarized electron-positron annihilation

Spin effects in the tau-lepton pair induced by anomalous magnetic and electric dipole moments

TauSpinner algorithms for including spin and New Physics effects in qˉ​q→Z/γ∗→ττ process

Determination of the sensitivity of Λ and Λc+​ electric dipole moments using a full angular analysis

TauSpinner algorithms for including spin and New Physics effects in γγ→ττ process

τ-lepton pair spin in proton-proton LHC collisions for anomalous dipole moments

Decay of the Higgs boson to longitudinally polarized leptons and quarks

Electron-positron, parton-parton and photon-photon production of τ-lepton pairs: anomalous magnetic and electric dipole moments spin effects

Spin correlations in τ-lepton pair production due to anomalous magnetic and electric dipole moments

Energy correlation of bottom quarks from decays of top quarks in electron−positron annihilation

Decay of the Higgs boson h→τ−τ+→π−ντ​π+νˉτ​ for a non-Hermitian Yukawa interaction

Energy and angular distributions of the bottom quark in the electron-positron annihilation e+e−→bW+tˉ

Higgs boson decay to lepton pair and photon and possible non-Hermiticity of the Yukawa interaction

The prospect of charm quark magnetic moment determination

The top-quark polarization beyond the Standard Model in electron-positron annihilation

Feasibility of tau lepton electromagnetic dipole moments measurement using bent crystal at the LHC

Higgs boson ZZ couplings in Higgs-strahlung at the ILC

Feasibility of measuring the magnetic dipole moments of the charm baryons at the LHC using bent crystals

The Higgs boson decay into ZZ decaying to identical fermion pairs

Decay of the Higgs boson to τ−τ+ and non-Hermiticity of the Yukawa interaction

Decays of a neutral particle with zero spin and arbitrary CP parity into two off-mass-shell Z bosons

Angular distribution and forward-backward asymmetry of the Higgs-boson decay to photon and lepton pair

Polarization effects in the Higgs boson decay to gamma Z and test of CP and CPT symmetries

Contribution of vector resonances to the {\bar B}_d^0 -> {\bar K}^{*0} mu^+ mu^- decay

Spin correlations in the $τ$ -lepton pair in polarized electron-positron annihilation

TauSpinner algorithms for including spin and New Physics effects in $q ˉ q \to Z / γ^{*} \to τ τ$ process

Determination of the sensitivity of $Λ$ and $Λ_{c}^{+}$ electric dipole moments using a full angular analysis

TauSpinner algorithms for including spin and New Physics effects in $γ γ \to τ τ$ process

$τ$ -lepton pair spin in proton-proton LHC collisions for anomalous dipole moments

Electron-positron, parton-parton and photon-photon production of $τ$ -lepton pairs: anomalous magnetic and electric dipole moments spin effects

Spin correlations in $τ$ -lepton pair production due to anomalous magnetic and electric dipole moments

Energy correlation of bottom quarks from decays of top quarks in electron $-$ positron annihilation

Decay of the Higgs boson $h \to τ^{-} τ^{+} \to π^{-} ν_{τ} π^{+} ν ˉ_{τ}$ for a non-Hermitian Yukawa interaction

Energy and angular distributions of the bottom quark in the electron-positron annihilation $e^{+} e^{-} \to b W^{+} t ˉ$

Higgs boson $Z Z$ couplings in Higgs-strahlung at the ILC

Decay of the Higgs boson to $τ^{-} τ^{+}$ and non-Hermiticity of the Yukawa interaction