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The role of meson retardation in deuteron photodisintegration above pion threshold

✍ Scribed by Michael Schwamb; Hartmuth Arenhövel

Publisher
Elsevier Science
Year
2001
Tongue
English
Weight
390 KB
Volume
690
Category
Article
ISSN
0375-9474

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✦ Synopsis

Photodisintegration of the deuteron above π threshold is studied in a coupled-channel approach including N∆ and πd channels with consideration of pion retardation in potentials and exchange currents. A much improved description of total and differential cross sections in the energy region between π threshold and 400-450 MeV is achieved. With respect to polarization observables, the description of the linear photon asymmetry and the proton polarization remains problematic.

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The role of meson retardation in the NN
The role of meson retardation in the NN interaction above pion threshold
✍ Michael Schwamb; Hartmuth Arenhövel 📂 Article 📅 2001 🏛 Elsevier Science 🌐 English ⚖ 383 KB

A model is developed for the hadronic interaction in the two-nucleon system above pion threshold which is based on meson, nucleon and ∆ degrees of freedom and which includes full meson retardation in the exchange operators. For technical reasons, the model allows maximal one meson to be present expl