316 citations · 4.3k across the 162 of their papers we have counts for
9 papers · 1 filter
Soft rescattering in the timelike proton form factor within a spacetime scheme
Andrea Bianconi, Egle Tomasi-Gustafsson
The annihilation of a lepton pair into a proton-antiproton pair, and the reverse process, allow for a measurement of the timelike proton form factors. This work aims at studying th…
Phenomenological analysis of near threshold periodic modulations of the proton timelike form factor
A. Bianconi, E. Tomasi-Gustafsson
We have recently highlighted the presence of a periodically oscillating 10 \% modulation in the BABAR data on the proton timelike form factors, in the reaction $\rightarr…
Periodic interference structures in the time-like proton form factor
Andrea Bianconi, Egle Tomasi-Gustafsson
An intriguing and elusive feature of the timelike hadron form factor is the possible presence of an imaginary part associated to rescattering processes. We find evidence of that in…
Limits on the low-energy antinucleon annihilations from the Heisenberg principle
A. Bianconi
Here a short synthesis is presented of the work, developed in the last two years by the Brescia Collaboration, on the phenomenology of antinucleon-nucleon and antinucleon-nucleus a…
On the different role of protons and neutrons in antinucleon annihilations on nuclei
A. Bianconi, G. Bonomi, M. P. Bussa +4
We compare data of antineutron and antiproton annihilation cross sections on different targets at very low energies. After subtracting Coulomb effects, we observe that the ratio be…
Annihilation of antiprotons on nuclear targets at low energies: a simple analysis
A. Bianconi, G. Bonomi, E. Lodi Rizzini +2
We set up a plane wave impulse approximation (PWIA) formalism for the analysis of the annihilation cross sections of antinucleons on nuclear targets at very low momenta (below 100…
Helicity Asymmetry for Proton Emission from Polarized Electrons in the Eikonal Regime
A. Bianconi, M. Radici
The nuclear response to longitudinally polarized electrons, detected in coincidence with out-of-plane high-energy protons, is discussed in a simple model where the ejectile wave fu…
Quadrupole deformation of deuterons and final state interaction in scattering on tensor polarized deuterons at CEBAF energies
A. Bianconi, S. Jeschonnek, N. N. Nikolaev +1
The strength of final state interaction (FSI) between struck proton and spectator neutron in scattering depends on the alignment of the deuteron. We study the re…
Colour Transparency in Hadronic Basis
A. Bianconi, S. Boffi, D. E. Kharzeev
The dynamics of nuclear transparency in hard nuclear reactions is studied by an expansion of the correlator of the hard scattering operator on a hadronic basis. Colour transparency…