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19942026
most citedMeasurement of the Spin-Dependent Structure Function of the Proton

345 citations · 893 across the 16 of their papers we have counts for

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14 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 and pairs in the reactions . 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

LHCspin: a Polarized Gas Target for LHC

A. Accardi, A. Bacchetta, L. Barion +90

The goal of the LHCspin project is to develop innovative solutions for measuring the 3D structure of nucleons in high-energy polarized fixed-target collisions at LHC, exploring new…

hep-ex2025

Spectroscopy of Strange Mesons and First Observation of a Strange Crypto-Exotic State with

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

We measured the strange-meson spectrum in the scattering reaction with the COMPASS spectrometer at CERN. Using the world's largest sample of…

hep-ex2024

Measurement of the hard exclusive 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 beam impinging on a transversely polarised ammonia target. Comb…

hep-ex2022★ 1 cited

Spin Density Matrix Elements in Exclusive 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 meson muoproduction at COMPASS using 160~GeV/ polarised and beams im…

hep-ex2014★ 7 cited

Spin alignment and violation of the OZI rule in exclusive and production in pp collisions

C. Adolph, R. Akhunzyanov, M. G. Alexeev +206

Exclusive production of the isoscalar vector mesons and is measured with a 190 GeV proton beam impinging on a liquid hydrogen target. Cross section ratios are determine…

hep-ex2014★ 15 cited

Measurement of radiative widths of and

C. Adolph, R. Akhunzyanov, M. G. Alekseev +206

The COMPASS Collaboration at CERN has investigated the reaction embedded in the Primakoff reaction of pions scattering in the Coulom…

hep-ex2013★ 29 cited

Transverse target spin asymmetries in exclusive muoproduction

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

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

hep-ex2009★ 81 cited

Flavour Separation of Helicity Distributions from Deep Inelastic Muon-Deuteron Scattering

COMPASS Collaboration, M. Alekseev

We present a LO evaluation of helicity densities of valence, Δu_v+Δd_v, non-strange sea, Δ\bar{u}+Δ\bar{d}, and strange quarks, Δs (assumed to be equal to Δ\bar{s}). They have been…

hep-ex2006★ 236 cited

A new measurement of the Collins and Sivers asymmetries on a transversely polarised deuteron target

Compass, :, E. S. Ageev

New high precision measurements of the Collins and Sivers asymmetries of charged hadrons produced in deep-inelastic scattering of muons on a transversely polarised 6LiD target are…

hep-ex1994★ 98 cited

Spin Asymmetry in Muon--Proton Deep Inelastic Scattering on a Transversely-Polarized Target

The Spin Muon Collaboration

We measured the spin asymmetry in the scattering of 100 GeV longitudinally-polarized muons on transversely polarized protons. The asymmetry was found to be compatible with zero in…