M ay 1 99 8 1 MESON - EXCHANGE MODEL FOR THE Y N INTERACTION ∗

ar X iv : h ep - p h / 95 05 25 7 v 1 8 M ay 1 99 5 To VMD , or not to VMD , in the quark - gluon plasma

I review results on the shift of the ρ meson mass at nonzero temperature in a gauged linear sigma model, under the assumption of strict vector meson

ar X iv : h ep - p h / 99 03 53 3 v 1 3 0 M ar 1 99 9 Study of the NN interaction in a Goldstone boson exchange model

Adiabatic nucleon-nucleon potentials are calculated in a six-quark nonrel-ativistic chiral constituent quark model where the Hamiltonian contains a linear confinement and a pseudoscalar meson (Goldstone boson) exchange interaction between quarks. Calculations are performed both in a cluster model and a molecular orbital basis, through coupled channels. In both cases the potentials present an im...

ar X iv : h ep - p h / 96 05 24 2 v 1 7 M ay 1 99 6 Meson bound states in multiflavour massive Schwinger model ∗

The problem of meson bound states with N f massive fermions in two dimensional quantum electrodynamics is discussed. We speculate about the spectrum of the lightest particles by means of the effective semiclassical description. In particular, the systems of fundamental fermions with SU (2) and SU (3) flavour symmetries broken by massive terms are investigated.

l - th / 9 90 10 38 v 2 1 8 Ja n 19 99 pp → pK + Λ reaction in an effective Lagrangian model

We investigate the pp → pK + Λ reaction within an effective Lagrangian model where the contributions to the amplitudes are taken into account within the tree level. The initial interaction between the two nucleons is modeled by the exchange of π, ρ, ω and σ mesons and the ΛK + production proceeds via the excitation of the N * (1650), N * (1710), N * (1720) baryonic resonances. The parameters of...

ar X iv : n uc l - th / 9 90 50 49 v 1 2 1 M ay 1 99 9 η - and η ′ - meson production in the reaction pn → dM near threshold