Polarization effects for the reaction $e^++e^-\to \bar p+p $ in presence of two--photon exchange - Lecture Notes

Simple item page
dc.creatorAdamuscin, C.
dc.creatorGakh, G. I.
dc.creatorTomasi-Gustafsson, E.
dc.date2007-04-25
dc.date.accessioned2026-07-07T07:58:12Z
dc.date.available2026-07-07T07:58:12Z
dc.descriptionThe aim of this work is to give a pedagogical derivation of polarization observables for the annihilation reaction $e^+ + e^- \to N+ \bar N$. The reaction mechanism is one photon + two photon exchange, the last is described by axial parametrization. After deriving the general expressions for the cross section of a binary process, the matrix element is written in terms of three complex amplitudes. The method to derive polarization observables is detailed and all expressions are given in terms of generalized form factors. The strategy for determining physical form factors in annihilation reactions in presence of two photon exchange is suggested, on the basis of model independent properties of the relevant observables.
dc.description50 pages, one figure, Lecture Notes
dc.identifierhttps://arxiv.org/abs/0704.3375
dc.identifierhttp://arxiv.org/abs/0704.3375
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/127921
dc.subjectHigh Energy Physics - Phenomenology
dc.titlePolarization effects for the reaction $e^++e^-\to \bar p+p $ in presence of two--photon exchange - Lecture Notes
dc.typetext

Files

Collections

arXiv