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Photoproduction of the meson using the CLAS detector
M. ~Carver, A. ~Celentano, K. ~Hicks +137
The quark structure of the meson has, for many years, been assumed to be a pure quark-antiquark () resonance with quantum numbers . Recently,…
Beam spin asymmetry in semi-inclusive electroproduction of a hadron pair
M. Mirazita, H. Avakian, A. Courtoy +140
A first measurement of the longitudinal beam spin asymmetry ALU in the semi-inclusive electroproduction of pairs of charged pions is reported. ALU is a higher-twist observable and…
Extraction of beam-spin asymmetries from the hard exclusive channel off protons in a wide range of kinematics
S. Diehl, K. Joo, A. Kim +135
We have measured beam-spin asymmetries to extract the moment from the hard exclusive reaction above the resonance region, fo…
Azimuthal single- and double-spin asymmetries in semi-inclusive deep-inelastic lepton scattering by transversely polarized protons
HERMES Collaboration, A. Airapetian, N. Akopov +72
A comprehensive set of azimuthal single-spin and double-spin asymmetries in semi-inclusive leptoproduction of pions, charged kaons, protons, and antiprotons from transversely polar…
An experimental program with high duty-cycle polarized and unpolarized positron beams at Jefferson Lab
A. Accardi, A. Afanasev, I. Albayrak +227
Positron beams, both polarized and unpolarized, are identified as essential ingredients for the experimental programs at the next generation of lepton accelerators. In the context…
Probing the core of the strong nuclear interaction
A. Schmidt, J. R. Pybus, R. Weiss +162
The strong nuclear interaction between nucleons (protons and neutrons) is the effective force that holds the atomic nucleus together. This force stems from fundamental interactions…