Field-theoretical approach to particle oscillations in absorbing matter

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dc.creatorNazaruk, V. I.
dc.date2007-02-07
dc.date.accessioned2026-07-07T11:22:36Z
dc.date.available2026-07-07T11:22:36Z
dc.descriptionThe $ab$ oscillations in absorbing matter are considered. The standard model based on optical potential does not describe the total $ab$ transition probability as well as the channel corresponding to absorption of the $b$-particle. We calculate directly the off-diagonal matrix element in the framework of field-theoretical approach. Contrary to one-particle model, the final state absorption does not tend to suppress the channels mentioned above or, similarly, calculation with hermitian Hamiltonian leads to increase the corresponding values. The model reproduces all the results on the particle oscillations, however it is oriented to the description of the above-mentioned channels. Also we touch on the problem of infrared singularities. The approach under study is infrared-free.
dc.description27 pages, 8 figures
dc.identifierhttps://arxiv.org/abs/hep-ph/0702071
dc.identifierhttp://arxiv.org/abs/hep-ph/0702071
dc.identifierEur.Phys.J.C53:573-584,2008
dc.identifierdoi:10.1140/epjc/s10052-007-0473-6
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/194624
dc.subjectHigh Energy Physics - Phenomenology
dc.subjectNuclear Theory
dc.titleField-theoretical approach to particle oscillations in absorbing matter
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