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[more ▼]Baryon-to-meson Transition Distribution Amplitudes (TDAs) appear as building blocks in the collinear factorized description of amplitudes for a class of hard exclusive reactions, prominent examples being hard exclusive pion electroproduction off a nucleon in the backward region and baryon-antibaryon annihilation into a pion and a lepton pair or a charmonium. Baryon-to-meson TDAs extend both the concepts of generalized parton distributions (GPDs) and baryon distribution amplitudes (DAs) encoding valuable complementary information on the hadronic structure. We review the basic properties of baryon-to-meson TDAs and discuss the perspectives for the experimental access with the PANDA detector. [less ▲]Detailed reference viewed: 6 (0 ULg) A short introduction to spallation reactionsCugnon, Joseph in Few-Body Systems (2012), 53(1-2), 142-152Detailed reference viewed: 3 (0 ULg) The Casimir Effect and the Vacuum Energy: Duality in the Physical InterpretationCugnon, Joseph in Few-Body Systems (2012), 53(1-2), 181-188Detailed reference viewed: 21 (3 ULg) Neutrino masses beyond the tree levelAristizabal Sierra, Diego in Few-Body Systems (2011, July)Models for Majorana neutrino masses can be classified according to the level in perturbation theory at which the effective dimension five operator LLHH is realized. The possibilities range from the tree ... [more ▼]Models for Majorana neutrino masses can be classified according to the level in perturbation theory at which the effective dimension five operator LLHH is realized. The possibilities range from the tree-level up to the three-loop level realizations. We discuss some general aspects of this approach and speculate about a model independent classification of the possible cases. Among all the realizations, those in which the effective operator is induced by radiative corrections open the possibility for lepton number violation near -or at- the electroweak scale. We discuss some phenomenological aspects of two generic radiative realizations: the Babu-Zee model and supersymmetric models with bilinear R-parity violation. [less ▲]Detailed reference viewed: 9 (1 ULg) High-Energy Physics with Particles Carrying Non-Zero Orbital Angular MomentumIvanov, Igor in Few-Body Systems (2011)Thanks to progress in optics in the past two decades, it is possible to create photons carrying well-defined non-zero orbital angular momentum (OAM). Boosting these photons into high-energy range ... [more ▼]Thanks to progress in optics in the past two decades, it is possible to create photons carrying well-defined non-zero orbital angular momentum (OAM). Boosting these photons into high-energy range preserving their OAM seems feasible. Intermediate energy electrons with OAM have also been produced recently. One can, therefore, view OAM as a new degree of freedom in high-energy collisions and ask what novel insights it can bring. Here we discuss generic features of scattering processes involving twisted particles in the initial state. We show that they make it possible to perform a Fourier analysis of a plane wave cross section with respect to the azimuthal angles of the initial particles, and to probe the autocorrelation function of the amplitude, a quantity inaccessible in plane wave collisions. [less ▲]Detailed reference viewed: 15 (4 ULg) Large N(c) QCD versus quark modelSemay, Claude; Buisseret, Fabien; Stancu, Floarea et alin Few-Body Systems (2008), 44Detailed reference viewed: 13 (4 ULg) The Nucleon-Nucleon Problem in Quark ModelsStancu, Floarea in Few-Body Systems (2003), 14In the first part we summarize the status of the nucleon-nucleon (NN) problem in the context of Hamiltonian based constituent quark models and present results for the $\ell = 0$ phase shifts obtained from ... [more ▼]In the first part we summarize the status of the nucleon-nucleon (NN) problem in the context of Hamiltonian based constituent quark models and present results for the $\ell = 0$ phase shifts obtained from the Goldstone-boson exchange model by applying the resonating group method. The second part deals with the construction of local shallow and deep equivalent potentials based on a Superymmetric Quantum Mechanics approach. [less ▲]Detailed reference viewed: 15 (2 ULg) 1