A. Khodjamirian

activity

19932026

B \to K^{(*)} ℓ^{+} ℓ^{-}

and

B \to K^{*} γ

427 citations · 4.8k across the 81 of their papers we have counts for

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hep-ph2026

Light-cone sum rules with $B$ -meson distribution amplitudes for the $B \to p$ form factors in $B$ -mesogenesis models

Aritra Biswas, Alexander Khodjamirian, Ali Mohamed

New decay modes of $B$ -meson into a baryon and invisible dark antibaryon $Ψ$ are among the most distinctive signatures of the $B$ -mesogenesis scenario. We concentrate on the proton…

hep-ph2025

Nonlocal form factor of chromomagnetic penguin in $B \to K ℓ^{+} ℓ^{-}$ from QCD light-cone sum rules

T. Hurth, A. Khodjamirian, F. Mahmoudi +3

The branching fraction of the $B \to K ℓ^{+} ℓ^{-}$ decay has been measured recently by the LHC experiments, showing a deviation from theory predictions based on the Standard Model…

hep-ph2025

Non-perturbaitve effects in Higgs boson decays to electroweak vector bosons and photons

Alexander Khodjamirian, Kirill Melnikov, Arkady Vainshtein

We estimate the magnitude of the leading non-perturbative QCD corrections to the decays of the Higgs boson to the $γ Z$ and $γ γ$ final states. These corrections originate from the l…

hep-ph2025

$D \to P ℓ^{+} ℓ^{-}$ decays assisted by QCD light-cone sum rules

Anshika Bansal, Alexander Khodjamirian, Thomas Mannel

We suggest a new method to analyse the rare $D_{(s)} \to P ℓ^{+} ℓ^{-}$ decays ( $P = π, K$ ), combining QCD light-cone sum rules (LCSR) with hadronic dispersion relations. As our main…

hep-ph2023

A guide to the QCD light-cone sum rule for $b$ -quark decays

Alexander Khodjamirian, Blaženka Melić, Yu-Ming Wang

We overview the current status and future perspectives of the QCD-based method of light-cone sum rules. The two main versions of these sum rules, using light-meson and $B$ -meson di…

hep-ph2023★ 11 cited

$B \to D_{0}^{}$ and $B_{s} \to D_{s 0}^{}$ form factors from QCD light-cone sum rules

Nico Gubernari, Alexander Khodjamirian, Rusa Mandal +1

We present the first application of QCD light-cone sum rules (LCSRs) with $B_{(s)}$ -meson distribution amplitudes to the $B_{(s)} \to D_{(s) 0}^{*}$ form factors, where $D_{(s)0}^*…

hep-ph2023★ 13 cited

Light-Cone Sum Rules for $S$ -wave $B \to K π$ Form Factors

Sébastien Descotes-Genon, Alexander Khodjamirian, Javier Virto +1

We derive a set of light-cone sum rules relating the $S$ -wave $B \to K π$ hadronic form factors to the $B$ -meson light-cone distribution amplitudes (LCDAs), taking into account the…

hep-ph2022★ 6 cited

New Sum Rules for the $B_{c} \to J / ψ$ Form Factors

Marzia Bordone, Alexander Khodjamirian, Thomas Mannel

We derive new sum rules for the form factors of the $B_{c} \to J / ψ ℓ ν ˉ_{ℓ}$ semileptonic transitions, employing the vacuum-to- $B_{c}$ correlation function of the $J / ψ$ -interpo…

hep-ph2022★ 12 cited

$B$ -meson decay into a proton and dark antibaryon from QCD light-cone sum rules

Alexander Khodjamirian, Marcel Wald

The recently developed $B$ -Mesogenesis scenario predicts decays of $B$ mesons into a baryon and hypothetical dark antibaryon $Ψ$ . We suggest a method to calculate the amplitude of…

hep-ph2022★ 14 cited

$B \to D_{1} (2420)$ and $B \to D_{1}^{'} (2430)$ form factors from QCD light-cone sum rules

Nico Gubernari, Alexander Khodjamirian, Rusa Mandal +1

We perform the first calculation of form factors in the semileptonic decays $B \to D_{1} (2420) ℓ ν_{ℓ}$ and $B \to D_{1}^{'} (2430) ℓ ν_{ℓ}$ using QCD light-cone sum rules (…

hep-ph2021

QCD-based estimate of direct $C P$ asymmetry in charm decays

Alexander Khodjamirian

I discuss the calculation of the direct CP-asymmetry in $D \to π^{+} π^{-}$ and $D \to K^{+} K^{-}$ decays with the method of QCD light-cone sum rules. The main result is the upper limit for…

hep-ph2020★ 29 cited

The $D^{} D π$ and $B^{} B π$ couplings from light-cone sum rules

Alexander Khodjamirian, Blaženka Melić, Yu-Ming Wang +1

We revisit the calculation of the strong couplings $D^{*} D π$ and $B^{*} B π$ from the QCD light-cone sum rules using the pion light-cone distribution amplitudes. The accuracy of the corr…

hep-ph2020★ 42 cited

Inverse moment of the $B_{s}$ -meson distribution amplitude from QCD sum rule

Alexander Khodjamirian, Rusa Mandal, Thomas Mannel

We derive a QCD sum rule for the inverse moment of the $B_{s}$ -meson light-cone distribution amplitude in HQET. Within this method, the $S U (3)_{f l}$ symmetry violation is traced to t…

hep-ph2020★ 36 cited

The pion light-cone distribution amplitude from the pion electromagnetic form factor

Shan Cheng, Alexander Khodjamirian, Aleksey V. Rusov

We suggest to probe the pion light-cone distribution amplitude, applying a dispersion relation for the pion electromagnetic form factor. Instead of the standard dispersion relation…

hep-ph2020★ 71 cited

Challenges in Semileptonic B Decays

P. Gambino, A. S. Kronfeld, M. Rotondo +22

Two of the elements of the Cabibbo-Kobayashi-Maskawa quark mixing matrix, $∣ V_{u b} ∣$ and $∣ V_{c b} ∣$ , are extracted from semileptonic B decays. The results of the B factories, analy…

hep-ph2019★ 54 cited

Light-Cone Sum Rules for $B \to K π$ Form Factors and Applications to Rare Decays

Sébastien Descotes-Genon, Alexander Khodjamirian, Javier Virto

We derive a set of light-cone sum rules relating the hadronic form factors relevant for $B \to K π ℓ^{+} ℓ^{-}$ decays to the $B$ -meson light-cone distribution amplitudes (LCDAs). We…

hep-ph2017★ 31 cited

Timelike-helicity $B \to π π$ form factor from light-cone sum rules with dipion distribution amplitudes

Shan Cheng, Alexander Khodjamirian, Javier Virto

We complete the set of QCD light-cone sum rules for $B \to π π$ transition form factors, deriving a new sum rule for the timelike-helicity form factor $F_{t}$ in terms of dipion distri…

hep-ph2017★ 76 cited

Direct CP asymmetry in $D \to π^{-} π^{+}$ and $D \to K^{-} K^{+}$ in QCD-based approach

Alexander Khodjamirian, Alexey A. Petrov

We present the first QCD-based calculation of hadronic matrix elements with penguin topology determining direct CP-violating asymmetries in $D^{0} \to π^{-} π^{+}$ and $D^{0} \to K^{-} K^{+}$ non…

hep-ph2017★ 94 cited

$B_{s} \to K ℓ ν_{ℓ}$ and $B_{(s)} \to π (K) ℓ^{+} ℓ^{-}$ decays at large recoil and CKM matrix elements

Alexander Khodjamirian, Aleksey V. Rusov

We provide hadronic input for the $B$ -meson semileptonic transitions to a light pseudoscalar meson at large recoil. The $B_{s} \to K$ form factor calculated from QCD light-cone sum ru…

hep-ph2015★ 44 cited

Form factors in $B \to π π ℓ ν ˉ_{ℓ}$ from QCD light-cone sum rules

Christian Hambrock, Alexander Khodjamirian

The form factors of the semileptonic $B \to π π ℓ ν ˉ$ decay are calculated from QCD light-cone sum rules with the distribution amplitudes of dipion states. This method is valid i…

hep-ph2015★ 35 cited

Direct probes of flavor-changing neutral currents in $e^{+} e^{-}$ collisions

Alexander Khodjamirian, Thomas Mannel, Alexey A Petrov

We propose a novel method to study flavor-changing neutral currents in the $e^{+} e^{-} \to D^{* 0}$ and $e^{+} e^{-} \to B_{s}^{*}$ transitions, tuning the energy of $e^{+} e^{-}$ - collisions to the…

hep-ph2015★ 49 cited

Hadronic effects and observables in $B \to π ℓ^{+} ℓ^{-}$ decay at large recoil

Christian Hambrock, Alexander Khodjamirian, Aleksey Rusov

We calculate the amplitude of the rare flavour-changing neutral-current decay $B \to π ℓ^{+} ℓ^{-}$ at large recoil of the pion. The nonlocal contributions in which the weak effecti…

hep-ph2014★ 56 cited

Extrapolation and unitarity bounds for the $B \to π$ form factor

I. Sentitemsu Imsong, Alexander Khodjamirian, Thomas Mannel +1

We address the problem of extrapolating the vector form factor $f_{B π}^{+}$ , which is relevant to $B \to π ℓ ν_{ℓ}$ decays, from the region of small to the region of large momentum…

hep-ph2014★ 29 cited

Radial excitations of heavy-light mesons from QCD sum rules

P. Gelhausen, A. Khodjamirian, A. A. Pivovarov +1

QCD sum rules are commonly used to predict the characteristics of ground-state hadrons. We demonstrate that two-point sum rules for the decay constants of charmed ($D^{(*)},D_s^{(*…

Light-cone sum rules with B-meson distribution amplitudes for the B→p form factors in B-mesogenesis models

Nonlocal form factor of chromomagnetic penguin in B→Kℓ+ℓ− from QCD light-cone sum rules

Non-perturbaitve effects in Higgs boson decays to electroweak vector bosons and photons

D→Pℓ+ℓ− decays assisted by QCD light-cone sum rules

A guide to the QCD light-cone sum rule for b-quark decays

B→D0∗​ and Bs​→Ds0∗​ form factors from QCD light-cone sum rules

Light-Cone Sum Rules for S-wave B→Kπ Form Factors

New Sum Rules for the Bc​→J/ψ Form Factors

B-meson decay into a proton and dark antibaryon from QCD light-cone sum rules

B→D1​(2420) and B→D1′​(2430) form factors from QCD light-cone sum rules

QCD-based estimate of direct CP asymmetry in charm decays

The D∗Dπ and B∗Bπ couplings from light-cone sum rules

Inverse moment of the Bs​-meson distribution amplitude from QCD sum rule

The pion light-cone distribution amplitude from the pion electromagnetic form factor

Challenges in Semileptonic B Decays

Light-Cone Sum Rules for B→Kπ Form Factors and Applications to Rare Decays

Timelike-helicity B→ππ form factor from light-cone sum rules with dipion distribution amplitudes

Direct CP asymmetry in D→π−π+ and D→K−K+ in QCD-based approach

Bs​→Kℓνℓ​ and B(s)​→π(K)ℓ+ℓ− decays at large recoil and CKM matrix elements

Form factors in B→ππℓνˉℓ​ from QCD light-cone sum rules

Direct probes of flavor-changing neutral currents in e+e− collisions

Hadronic effects and observables in B→πℓ+ℓ− decay at large recoil

Extrapolation and unitarity bounds for the B→π form factor

Radial excitations of heavy-light mesons from QCD sum rules

Light-cone sum rules with $B$ -meson distribution amplitudes for the $B \to p$ form factors in $B$ -mesogenesis models

Nonlocal form factor of chromomagnetic penguin in $B \to K ℓ^{+} ℓ^{-}$ from QCD light-cone sum rules

$D \to P ℓ^{+} ℓ^{-}$ decays assisted by QCD light-cone sum rules

A guide to the QCD light-cone sum rule for $b$ -quark decays

$B \to D_{0}^{}$ and $B_{s} \to D_{s 0}^{}$ form factors from QCD light-cone sum rules

Light-Cone Sum Rules for $S$ -wave $B \to K π$ Form Factors

New Sum Rules for the $B_{c} \to J / ψ$ Form Factors

$B$ -meson decay into a proton and dark antibaryon from QCD light-cone sum rules

$B \to D_{1} (2420)$ and $B \to D_{1}^{'} (2430)$ form factors from QCD light-cone sum rules

QCD-based estimate of direct $C P$ asymmetry in charm decays

The $D^{} D π$ and $B^{} B π$ couplings from light-cone sum rules

Inverse moment of the $B_{s}$ -meson distribution amplitude from QCD sum rule

Light-Cone Sum Rules for $B \to K π$ Form Factors and Applications to Rare Decays

Timelike-helicity $B \to π π$ form factor from light-cone sum rules with dipion distribution amplitudes

Direct CP asymmetry in $D \to π^{-} π^{+}$ and $D \to K^{-} K^{+}$ in QCD-based approach

$B_{s} \to K ℓ ν_{ℓ}$ and $B_{(s)} \to π (K) ℓ^{+} ℓ^{-}$ decays at large recoil and CKM matrix elements

Form factors in $B \to π π ℓ ν ˉ_{ℓ}$ from QCD light-cone sum rules

Direct probes of flavor-changing neutral currents in $e^{+} e^{-}$ collisions

Hadronic effects and observables in $B \to π ℓ^{+} ℓ^{-}$ decay at large recoil

Extrapolation and unitarity bounds for the $B \to π$ form factor