Absorption in the final state in reactions and decays in the medium

Abstract

The role of strong absorption of particles in intermidiate and final states has been considered. The range of applicability of phenomenological model of absorption has been studied. This model is nonuniversal. Its applicability depends on the type of interaction Hamiltonian and matrix element used. We also demonstrate that the violation of the unitarity condition can produce a qualitative error in the results. The absorption (decay) in the final state does not tend to suppress the total process probability as well as the probability of the channel corresponding to absorption. This is true for the reactions, decays and $n\bar{n}$ conversion in the medium.

arXiv comment7 pages, 5 figures, reported at LEAP'05

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Cited by in corpus (4)

• Field-theoretical approach to particle oscillations in absorbing matter
• On the suppression of the $n\bar{n}$ transitions in medium
• $n\bar{n}$ conversion in finite nuclei
• On the multistep processes in the nuclei