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papers

Publications (27)

hep-ex2021

Spin Density Matrix Elements in Exclusive $I ¨ $ 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 $I ¨ $ meson muoproduction on the proton at COMPASS using 160 GeV/ $c$ polarised $I^¼^{+}$ and $ Î…

hep-ex2024

Technical Design Report of the Spin Physics Detector at NICA

The SPD Collaboration, V. Abazov, V. Abramov +411

The Spin Physics Detector collaboration proposes to install a universal detector in the second interaction point of the NICA collider under construction (JINR, Dubna) to study the…

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

Collins and Sivers transverse-spin asymmetries in inclusive muoproduction of $I ¨ ^{0}$ 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-ex2019

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

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

We report on a measurement of hard exclusive $I ¨ ^{0}$ muoproduction on the proton by COMPASS using 160 GeV/ $c$ polarised $I^¼^{+}$ and $I^¼^{-}$ beams of the CERN SPS impinging on a liquid…

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 $I^\cdot I ¨ ^{-}$ and $I^\cdot^{'} I ¨ ^{-}$ pairs in the reactions $I ¨ ^{-} p \to I^\cdot^{(')} I ¨ ^{-} p$ . For the…