325 citations · 2k across the 113 of their papers we have counts for
12 papers · 2 filters
Exes and why Z? Some charming and beautiful observations
Eef van Beveren, George Rupp
Threshold enhancements like the X(4660) and depletion effects as the X(4260) are listed as c-cbar resonances in the Particle Data Group tables. We will discuss these observations,…
Observation of the Upsilon(2 3D1) and indication of the Upsilon(1 3D1)
Eef van Beveren, George Rupp
We present evidence, from published BABAR data, for the existence of further excitations in the b-bbar spectrum, namely the long-awaited Upsilon(1D) and Upsilon(2D) with central ma…
Is Upsilon(10580) really Upsilon(4S)?
Eef van Beveren, George Rupp
We analyse electron-positron data for b-bbar production published by the BABAR Collaboration, in the invariant-mass interval delimited by the B-Bbar and Lambda(b)-Lambda(b) thresho…
Drawbacks of applying perturbative schemes to meson spectroscopy
K. P. Khemchandani, Eef van Beveren, George Rupp
We study meson-meson scattering in a soluble model which describes asymptotically free mesons and confined quark-antiquark pairs via coupled channels. Concretely, the two scattered…
Observation of a hadronic interference effect in annihilation processes
Eef van Beveren, George Rupp
We present evidence for small oscillations we observe in electron-positron and proton-antiproton annihilation data, with a periodicity of 76+-2 MeV, independent of the beam energy.…
The quark-antiquark spectrum from upside down
Eef van Beveren, George Rupp
We argue that the spectra of quark-antiquark systems should better be studied from higher radial excitations and, in particular, from configurations with well-defined quantum numbe…