I. Konorov

activity

20062026

most citedPhysics Performance Report for PANDA: Strong Interaction Studies with Antiprotons

263 citations · 4.5k across the 97 of their papers we have counts for

collaborators

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73 papers · 1 filter

hep-ex2026

First Observation of an Exotic Reggeon

G. D. Alexeev, M. G. Alexeev, C. Alice +180

We present new \compass high-statistics measurements of the peripheral production of $η π^{-}$ and $η^{'} π^{-}$ pairs in the reactions $π^{-} p \to η^{(')} π^{-} p$ . For the first t…

hep-ex2025

Dihadron Transverse-Spin Asymmetries in Muon-Deuteron Deep-Inelastic Scattering

G. D. Alexeev, M. G. Alexeev, C. Alice +168

In 2022, the COMPASS collaboration performed semi-inclusive measurements of deep-inelastic muon-scattering on a transversely polarised deuteron (6LiD) target. From these data, tran…

hep-ex2025

Spectroscopy of Strange Mesons and First Observation of a Strange Crypto-Exotic State with $J^{P} = 0^{-}$

G. D. Alexeev, M. G. Alexeev, C. Alice +160

We measured the strange-meson spectrum in the scattering reaction $K^{-} + p \to K^{-} π^{-} π^{-} + p$ with the COMPASS spectrometer at CERN. Using the world's largest sample of…

hep-ex2024

Measurement of the hard exclusive $π^{0}$ muoproduction cross section at COMPASS

G. D. Alexeev, M. G. Alexeev, C. Alice +169

A new and detailed measurement of the cross section for hard exclusive neutral-pion muoproduction on the proton was performed in a wide kinematic region, with the photon virtuality…

hep-ex2023

High-statistics measurement of Collins and Sivers asymmetries for transversely polarised deuterons

G. D. Alexeev, M. G. Alexeev, C. Alice +183

New results are presented on a high-statistics measurement of Collins and Sivers asymmetries of charged hadrons produced in deep inelastic scattering of muons on a transversely pol…

hep-ex2023

Final COMPASS results on the transverse-spin-dependent azimuthal asymmetries in the pion-induced Drell-Yan process

G. D. Alexeev, M. G. Alexeev, C. Alice +180

The COMPASS Collaboration performed measurements of the Drell-Yan process in 2015 and 2018 using a 190 GeV/c $π^{-}$ beam impinging on a transversely polarised ammonia target. Comb…

hep-ex2023★ 1 cited

Probing Light Dark Matter with positron beams at NA64

Yu. M. Andreev, A. Antonov, D. Banerjee +63

We present the results of a missing-energy search for Light Dark Matter which has a new interaction with ordinary matter transmitted by a vector boson, called dark photon $A^\prime…

hep-ex2023

Measurement of the intrinsic hadronic contamination in the NA64 $- e$ high-purity $e^{+} / e^{-}$ beam at CERN

Yu. M. Andreev, D. Banerjee, B. Banto Oberhauser +65

In this study, we present the measurement of the intrinsic hadronic contamination at the CERN SPS H4 beamline configured to transport electrons and positrons at 100 GeV/c momentum.…

hep-ex2023

Transverse-spin-dependent azimuthal asymmetries of pion and kaon pairs produced in muon-proton and muon-deuteron semi-inclusive deep inelastic scattering

The COMPASS Collaboration

A set of measurements of azimuthal asymmetries in the production of pairs of identified hadrons in deep-inelastic scattering of muons on transversely polarised $^{6}$ LiD (deuteron) a…

hep-ex2022★ 9 cited

Collins and Sivers transverse-spin asymmetries in inclusive muoproduction of $ρ^{0}$ mesons

G. D. Alexeev, M. G. Alexeev, C. Alice +188

The production of vector mesons in deep inelastic scattering is an interesting yet scarsely explored channel to study the transverse spin structure of the nucleon and the related p…

hep-ex2022★ 1 cited

Spin Density Matrix Elements in Exclusive $ρ^{0}$ Meson Muoproduction

G. D. Alexeev, M. G. Alexeev, C. Alice +186

We report on a measurement of Spin Density Matrix Elements (SDMEs) in hard exclusive $ρ^{0}$ meson muoproduction at COMPASS using 160~GeV/ $c$ polarised $μ^{+}$ and $μ^{-}$ beams im…

hep-ex2022★ 20 cited

Search for a light muon-philic $Z^{'}$ with the NA64- $e$ experiment at CERN

Yu. M. Andreev, D. Banerjee, B. Banto Oberhauser +58

The extension of Standard Model made by inclusion of additional $U (1)$ gauge $L_{μ} - L_{τ}$ symmetry can explain the difference between the measured and the predicted value of the muon…

hep-ex2022★ 2 cited

Double $J / ψ$ production in pion-nucleon scattering at COMPASS

G. D. Alexeev, M. G. Alexeev, A. Amoroso +191

We present the study of the production of double $J / ψ$ mesons using COMPASS data collected with a 190 GeV/ $c$ $π^{-}$ beam scattering off NH $_{3}$ , Al and W targets. Kinematic distri…

hep-ex2021★ 23 cited

The exotic meson $π_{1} (1600)$ with $J^{P C} = 1^{-+}$ and its decay into $ρ (770) π$

M. G. Alexeev, G. D. Alexeev, A. Amoroso +192

We study the spin-exotic $J^{P C} = 1^{-+}$ amplitude in single-diffractive dissociation of 190 GeV $/ c$ pions into $π^{-} π^{-} π^{+}$ using a hydrogen target and confirm the $π_1(1600) \to…

hep-ex2021

Probing the explanation of the muon (g-2) anomaly and thermal light dark matter with the semi-visible dark photon channel

C. Cazzaniga, P. Odagiu, E. Depero +55

We report the results of a search for a new vector boson ( $A^{'}$ ) decaying into two dark matter particles $χ_{1} χ_{2}$ of different mass. The heavier $χ_{2}$ particle subsequently decays…

hep-ex2021

Probing transversity by measuring $Λ$ polarisation in SIDIS

M. G. Alexeev, G. D. Alexeev, A. Amoroso +196

Based on the observation of sizeable target-transverse-spin asymmetries in single-hadron and hadron-pair production in Semi-Inclusive measurements of Deep Inelastic Scattering (SID…

hep-ex2021★ 42 cited

Constraints on New Physics in the Electron g-2 from a Search for Invisible Decays of a Scalar, Pseudoscalar, Vector, and Axial Vector

Yu. M. Andreev, D. Banerjee, J. Bernhard +49

We performed a search for a new generic $X$ boson, which could be a scalar ( $S$ ), pseudoscalar ( $P$ ), vector ( $V$ ) or an axial vector ( $A$ ) particle produced in the 100 GeV electro…

hep-ex2021★ 42 cited

Conceptual design of the Spin Physics Detector

V. M. Abazov, V. Abramov, L. G. Afanasyev +291

The Spin Physics Detector, a universal facility for studying the nucleon spin structure and other spin-related phenomena with polarized proton and deuteron beams, is proposed to be…

hep-ex2020

Hunting down the X17 boson at the CERN SPS

E. Depero, Yu. M. Andreev, D. Banerjee +53

Recently, the ATOMKI experiment has reported new evidence for the excess of $e^{+} e^{-}$ events with a mass $\sim$ 17 MeV in the nuclear transitions of $^{4}$ He, that they previously obs…

hep-ex2020★ 12 cited

Spin Density Matrix Elements in Exclusive $ω$ Meson Muoproduction $^{*}$

M. G. Alexeev, G. D. Alexeev, A. Amoroso +197

We report on a measurement of Spin Density Matrix Elements (SDMEs) in hard exclusive $ω$ meson muoproduction on the proton at COMPASS using 160 GeV/ $c$ polarised $μ^{+}$ and $ μ^{…

hep-ex2020★ 123 cited

Improved limits on a hypothetical X(16.7) boson and a dark photon decaying into $e^{+} e^{-}$ pairs

D. Banerjee, J. Bernhard, V. E. Burtsev +51

The improved results on a direct search for a new X(16.7 MeV) boson which could explain the anomalous excess of $e^{+} e^{-}$ pairs observed in the excited 8Be nucleus decays ("Berilliu…

hep-ex2019★ 9 cited

Contribution of exclusive diffractive processes to the measured azimuthal asymmetries in SIDIS

J. Agarwala, M. G. Alexeev, G. D. Alexeev +203

Hadron leptoproduction in Semi-Inclusive measurements of Deep-Inelastic Scattering (SIDIS) on unpolarised nucleons allows one to get information on the intrinsic transverse momentu…

hep-ex2019★ 215 cited

Dark matter search in missing energy events with NA64

D. Banerjee, V. E. Burtsev, A. G. Chumakov +48

A search for sub-GeV dark matter production mediated by a new vector boson $A^{'}$ , called dark photon, is performed by the NA64 experiment in missing energy events from 100 GeV elect…

hep-ex2019★ 24 cited

Measurement of the cross section for hard exclusive $π^{0}$ leptoproduction

M. G. Alexeev, G. D. Alexeev, A. Amoroso +199

We report on a measurement of hard exclusive $π^{0}$ muoproduction on the proton by COMPASS using 160 GeV/ $c$ polarised $μ^{+}$ and $μ^{-}$ beams of the CERN SPS impinging on a liquid hy…

First Observation of an Exotic Reggeon

Dihadron Transverse-Spin Asymmetries in Muon-Deuteron Deep-Inelastic Scattering

Spectroscopy of Strange Mesons and First Observation of a Strange Crypto-Exotic State with JP=0−

Measurement of the hard exclusive π0 muoproduction cross section at COMPASS

High-statistics measurement of Collins and Sivers asymmetries for transversely polarised deuterons

Final COMPASS results on the transverse-spin-dependent azimuthal asymmetries in the pion-induced Drell-Yan process

Probing Light Dark Matter with positron beams at NA64

Measurement of the intrinsic hadronic contamination in the NA64−e high-purity e+/e− beam at CERN

Transverse-spin-dependent azimuthal asymmetries of pion and kaon pairs produced in muon-proton and muon-deuteron semi-inclusive deep inelastic scattering

Collins and Sivers transverse-spin asymmetries in inclusive muoproduction of ρ0 mesons

Spin Density Matrix Elements in Exclusive ρ0 Meson Muoproduction

Search for a light muon-philic Z′ with the NA64-e experiment at CERN

Double J/ψ production in pion-nucleon scattering at COMPASS

The exotic meson π1​(1600) with JPC=1−+ and its decay into ρ(770)π

Probing the explanation of the muon (g-2) anomaly and thermal light dark matter with the semi-visible dark photon channel

Probing transversity by measuring Λ polarisation in SIDIS

Constraints on New Physics in the Electron g-2 from a Search for Invisible Decays of a Scalar, Pseudoscalar, Vector, and Axial Vector

Conceptual design of the Spin Physics Detector

Hunting down the X17 boson at the CERN SPS

Spin Density Matrix Elements in Exclusive ω Meson Muoproduction ∗

Improved limits on a hypothetical X(16.7) boson and a dark photon decaying into e+e− pairs

Contribution of exclusive diffractive processes to the measured azimuthal asymmetries in SIDIS

Dark matter search in missing energy events with NA64

Measurement of the cross section for hard exclusive π0 leptoproduction

Spectroscopy of Strange Mesons and First Observation of a Strange Crypto-Exotic State with $J^{P} = 0^{-}$

Measurement of the hard exclusive $π^{0}$ muoproduction cross section at COMPASS

Measurement of the intrinsic hadronic contamination in the NA64 $- e$ high-purity $e^{+} / e^{-}$ beam at CERN

Collins and Sivers transverse-spin asymmetries in inclusive muoproduction of $ρ^{0}$ mesons

Spin Density Matrix Elements in Exclusive $ρ^{0}$ Meson Muoproduction

Search for a light muon-philic $Z^{'}$ with the NA64- $e$ experiment at CERN

Double $J / ψ$ production in pion-nucleon scattering at COMPASS

The exotic meson $π_{1} (1600)$ with $J^{P C} = 1^{-+}$ and its decay into $ρ (770) π$

Probing transversity by measuring $Λ$ polarisation in SIDIS

Spin Density Matrix Elements in Exclusive $ω$ Meson Muoproduction $^{*}$

Improved limits on a hypothetical X(16.7) boson and a dark photon decaying into $e^{+} e^{-}$ pairs

Measurement of the cross section for hard exclusive $π^{0}$ leptoproduction