183 citations · 3.8k across the 109 of their papers we have counts for
10 papers · 1 filter
Light-meson masses in an unquenched quark model
Xiaoyun Chen, Jialun Ping, Craig D. Roberts +1
We perform a coupled-channels calculation of the masses of light mesons with the quantum numbers , , by including and components in a…
The nature of the resonances from a coupled-channels approach
Pablo G. Ortega, Jorge Segovia
The positive parity charmonium states are expected to lie around the 3.9 GeV/ energy region, according to the predictions of quark models. However, a plethora of…
Parton distribution amplitudes: revealing diquarks in the proton and Roper resonance
Cedric Mezrag, Jorge Segovia, Lei Chang +1
We present the first quantum field theory calculation of the pointwise behaviour of the leading-twist parton distribution amplitudes (PDAs) of the proton and its lightest radial ex…
Threshold effects in hadron spectrum: a new spectroscopy?
Pablo G. Ortega, Jorge Segovia, David R. Entem +1
The exploration of energies above the open-flavor threshold in the meson spectra has led to the appearance of unexpected states difficult to accommodate in the naive picture of a b…
Structure of the nucleon's low-lying excitations
Chen Chen, Bruno El-Bennich, Craig D. Roberts +3
A continuum approach to the three valence-quark bound-state problem in quantum field theory is used to perform a comparative study of the four lightest bary…
The S- and P-wave low-lying baryons in the chiral quark model
Gang Yang, Jialun Ping, Jorge Segovia
The , , and states of light baryons are investigated within the chiral quark model, paying particular attention to the well-known order reverse problem of an…
Determination of electric dipole transitions in heavy quarkonia using potential non-relativistic QCD
Jorge Segovia, Sebastian Steinbeißer
The electric dipole transitions with and are computed using the weak-coupling version of a low-energy effective field the…
Charmonium resonances in the 3.9 GeV/ energy region and the puzzle
Pablo G. Ortega, Jorge Segovia, David R. Entem +1
An interesting controversy has emerged challenging the widely accepted nature of the and the resonances, which had initially been assigned to the a…
Parity partners in the baryon resonance spectrum
Ya Lu, Chen Chen, Craig D. Roberts +3
We describe a calculation of the spectrum of flavour-SU(3) octet and decuplet baryons, their parity partners, and the radial excitations of these systems, made using a symmetry-pre…
pNRQCD determination of E1 radiative transitions
Sebastian Steinbeißer, Jorge Segovia
This contribution contains the first numerical computation of the complete set of relativistic corrections of relative order for electric dipole (E1) transitions in heavy q…