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Observation of the Cusp in the New Precise Beam Asymmetry Data for
TAPS Collaboration
Data on the beam asymmetry in the photoproduction of mesons off protons are reported for tagged photon energies from 1130 to 1790 MeV (mass range from 1748 MeV to …
Spin Density Matrix Elements in Exclusive 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 meson muoproduction on the proton at COMPASS using 160 GeV/ polarised and $ μ^{…
Helicity-dependent cross sections for the photoproduction of pairs from nucleons
M. Dieterle, L. Witthauer, A. Fix +88
The double-polarization observable and helicity-dependent cross sections , have been measured for the photoproduction of pairs off quasi-free protons a…
Triangle Singularity as the Origin of the
G. D. Alexeev, M. G. Alexeev, A. Amoroso +194
The COMPASS experiment recently discovered a new isovector resonance-like signal with axial-vector quantum numbers, the , decaying to . With a mass too close…