R. Dusaev

activity

20162026

most citedDark matter search in missing energy events with NA64

215 citations · 1.5k across the 45 of their papers we have counts for

collaborators

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41 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-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-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

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★ 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★ 34 cited

Search for a New B-L Z' Gauge Boson with the NA64 Experiment at CERN

Yu. M. Andreev, D. Banerjee, B. Banto-Oberhauser +55

A search for a new $Z^{'}$ gauge boson associated with (un)broken B-L symmetry in the keV-GeV mass range is carried out for the first time using the missing-energy technique in the NA…

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-ex2021★ 54 cited

Improved exclusion limit for light dark matter from $e^{+} e^{-}$ annihilation in NA64

Yu. Andreev, D. Banerjee, J. Bernhard +55

The current most stringent constraints for the existence of sub-GeV dark matter coupling to Standard Model via a massive vector boson $A^{'}$ were set by the NA64 experiment for…

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★ 27 cited

Search for pseudoscalar bosons decaying into $e^{+} e^{-}$ pairs in the NA64 experiment at the CERN SPS

Yu. M. Andreev, D. Banerjee, J. Bernhard +52

We report the results of a search for a light pseudoscalar particle $a$ that couples to electrons and decays to $e^{+} e^{-}$ performed using the high-energy CERN SPS H4 electron beam.…

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…

First Observation of an Exotic Reggeon

Improved limits on a new Z′ in B−L scenarios with the NA64 experiment at CERN

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

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

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

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

Measurement of the hard exclusive π0 muoproduction cross section at COMPASS

50 GeV π− in, nothing out: a sensitive probe of invisible η and η′ decays with NA64h

First constraints on the Lμ​−Lτ​ explanation of the muon g−2 anomaly from NA64-e at CERN

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

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

Spin Density Matrix Elements in Exclusive ρ0 Meson Muoproduction

Search for a New B-L Z' Gauge Boson with the NA64 Experiment at CERN

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

Improved exclusion limit for light dark matter from e+e− annihilation in NA64

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

Search for pseudoscalar bosons decaying into e+e− pairs in the NA64 experiment at the CERN SPS

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

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

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

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

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

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

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

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

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

Improved exclusion limit for light dark matter from $e^{+} e^{-}$ annihilation in NA64

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

Search for pseudoscalar bosons decaying into $e^{+} e^{-}$ pairs in the NA64 experiment at the CERN SPS