98 citations · 1.2k across the 82 of their papers we have counts for
4 papers · 1 filter
Recent issues in hadron spectroscopy
J. -M. Richard
A brief survey is presented of recently discovered hadrons, some of them presumably demonstrating a new kind of internal structure. This includes : spin-singlet quarkonium, mesons…
Safe domain and elementary geometry
J. -M. Richard
A classical problem of mechanics involves a projectile fired from a given point with a given velocity whose direction is varied. This results in a family of trajectories whose enve…
Mass-symmetry breaking in three-body ions
V. I. Korobov, J. -M. Richard
The ground-state energy of three-body ions evolves when the like-charge constituents are given different masses. The comparison of with the aver…
General Constraints on Spin Observables, Applications to Antiproton Proton to Antilambda Lambda and to Polarized Quark Distributions
Xavier ARTRU, Jean-Marc RICHARD
We review the density matrix formalism and the positivity conditions for general multiple spin asymmetries, taking as an example the case antiproton + proton -> antiLambda + Lambda…