首页|Dissociation cross sections of ψ(3770),ψ (4040),ψ(4160),and ψ(4415)mesons with nucleons
Dissociation cross sections of ψ(3770),ψ (4040),ψ(4160),and ψ(4415)mesons with nucleons
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We study the dissociation of ψ(3770),ψ(4040),ψ(4160),and ψ(4415)mesons in collision with nucleons,which takes place in high-energy proton-nucleus collisions.The quark interchange between a nucleon and a cc meson leads to the dissociation of the cc meson.We consider the reactions:pR → Λc+(D)0,pR → Λc+(D)*0,pR→∑c++D-,pR → ∑c++D*-,pR → ∑c+(D)0,pR → ∑c+(D)*0,pR→ ∑c*++D-,pR → ∑c*++D*-,pR →∑c*+(D)0,and pR → ∑c*+(D)*0,where R stands for ψ(3770),ψ(4040),ψ(4160),or ψ(4415).A reaction of a neutron and a cc meson corresponds to a reaction of a proton and the c(c)meson by replacing the up quark with the down quark and vice versa.Transition-amplitude formulas are derived from the S-matrix element.Unpolarized cross sections are calculated with the transition amplitudes for scattering in the prior form and in the post form.The cross sections relate to nodes in the radial wave functions of ψ (3770),ψ(4040),ψ(4160),and ψ(4415)mesons.
inelastic nucleon-charmonium scatteringquark interchangerelativistic constituent quark potential model
Ruo-Qing Ding、Xiao-Ming Xu、H J Weber
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Department of Physics,Shanghai University,Baoshan,Shanghai 200444,China
Department of Physics,University of Virginia,Charlottesville,VA 22904,United States of America
project STRONG of the European Center for Theoretical Studies in Nuclear Physics and Related Areas(2020)
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