V. Polyakov

activity

19972026

most citedA measurement of the branching fractions of the f1(1285) and f1(1420) produced in central pp interactions at 450 GeV/c

65 citations · 382 across the 25 of their papers we have counts for

collaborators

26 papers

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-ex2026

Improved limits on a new $Z^{'}$ in $B - L$ scenarios with the NA64 experiment at CERN

The NA64 Collaboration, Yu. M. Andreev, A. Antonov +53

Extensions of the Standard Model featuring an additional $U (1)_{B - L}$ gauge symmetry provide a compelling framework linking the origin of neutrino masses to possible dark matter ca…

hep-ex2026

A search for the dark photon in the OKA experiment

The OKA Collaboration, A. S. Sadovsky, A. P. Filin +35

A search for the massless dark photon in the decay $K^{+} \to π^{+} π^{0} γ$ is performed with the OKA detector exposed to 17.7 GeV/c RF separated secondary beam of the…

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

Searching for Light Dark Matter and Dark Sectors with the NA64 experiment at the CERN SPS

Yu. M. Andreev, A. Antonov, M. A. Ayala Torres +49

Since its approval in 2016, NA64 has pioneered light dark matter (LDM) searches with electron, positron, muon, and hadron beams. The experiment has successfully met its primary obj…

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-ex2025

Proof of principle for a light dark matter search with low-energy positron beams at NA64

Yu. M. Andreev, A. Antonov, M. A. Ayala Torres +54

Thermal light dark matter (LDM) with particle masses in the 1 MeV - 1 GeV range could successfully explain the observed dark matter abundance as a relic from the primordial Univers…

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-ex2024

50 GeV $π^{-}$ in, nothing out: a sensitive probe of invisible $η$ and $η^{'}$ decays with NA64h

Yu. M. Andreev, A. Antonov, M. A. Ayala Torres +54

We present the first results from a proof-of-concept search for dark sectors via invisible decays of pseudoscalar $η$ and $η^{'}$ mesons in the NA64h experiment at the CERN SPS. Our n…

hep-ex2024

First constraints on the $L_{μ} - L_{τ}$ explanation of the muon $g - 2$ anomaly from NA64- $e$ at CERN

Yu. M. Andreev, A. Antonov, D. Banerjee +58

The inclusion of an additional $U (1)$ gauge $L_{μ} - L_{τ}$ symmetry would release the tension between the measured and the predicted value of the anomalous muon magnetic moment: this pa…

hep-ex2024★ 2 cited

Exploration of the Muon $g - 2$ and Light Dark Matter explanations in NA64 with the CERN SPS high energy muon beam

Yu. M. Andreev, D. Banerjee, B. Banto Oberhauser +54

We report on a search for a new $Z^{'}$ ( $L_{μ} - L_{τ}$ ) vector boson performed at the NA64 experiment employing a high energy muon beam and a missing energy-momentum technique. Muons from…

hep-ex2023★ 3 cited

Searches for the light invisible axion-like particle in $K^{+} \to π^{+} π^{0} a$ decay

A. S. Sadovsky, A. P. Filin, S. A. Akimenko +31

A high statistics data sample of the $K^{+}$ decays is recorded by the OKA collaboration. A missing mass analysis is performed to search for a light invisible pseudoscalar axion-li…

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-ex2017★ 25 cited

Search for heavy neutrino in $K^{+} \to μ^{+} ν_{H}$ decay

A. S. Sadovsky, V. F. Kurshetsov, A. P. Filin +38

A high statistics data sample of the $K^{+} \to μ^{+} ν_{μ}$ decay was accumulated by the OKA experiment in 2012. The missing mass analysis was performed to search for the decay channel…

hep-ex2015★ 14 cited

Interplay among transversity induced asymmetries in hadron leptoproduction

Compass Collaboration, C. Adolph, R. Akhunzyanov +206

In the fragmentation of a transversely polarized quark several left-right asymmetries are possible for the hadrons in the jet. When only one unpolarized hadron is selected, it exhi…

hep-ex2014★ 35 cited

Search for exclusive photoproduction of Z $_{c}^{\pm}$ (3900) at COMPASS

C. Adolph, R. Akhunzyanov, M. G. Alexeev +205

A search for the exclusive production of the $Z_{c}^{\pm} (3900)$ hadron by virtual photons has been performed in the channel $Z_{c}^{\pm} (3900) \to J / ψ π^{\pm}$ . The data cover t…

hep-ex2013★ 29 cited

Transverse target spin asymmetries in exclusive $ρ^{0}$ muoproduction

C. Adolph, M. G. Alekseev, V. Yu. Alexakhin +209

Exclusive production of $ρ^{0}$ mesons was studied at the COMPASS experiment by scattering 160 GeV/ $c$ muons off transversely polarised protons. Five single-spin and three double-spi…

hep-ex1999★ 32 cited