A. Martin

activity

20242026

collaborators

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

hep-ex2026

Addendum to multiplicities of charged pions, kaons and unidentified charged hadrons on an isoscalar target measured by COMPASS Collaboration

The COMPASS Collaboration

The COMPASS Collaboration has recently published an article "Multiplicities of positive and negative pions, kaons, and unidentified hadrons from deep-inelastic scattering of muons…

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 $K^{-} + p \to K^{-} I ¨ ^{-} I ¨ ^{-} + p$ with the COMPASS spectrometer at CERN. Using the world's largest sample…

hep-ex2024

Measurement of the hard exclusive $I ¨ ^{0}$ 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…