Polarisation Observables in Antiproton Proton to Lepton Antilepton Reactions

Details Polarisation Observables in Antiproton Proton to Lepton Antilepton Reactions Polarisation Observables in Antiproton Proton to Lepton Antilepton Reactions

2007-02-27

arxiv.org/abs/hep-ph/0702276v1

AIPConf.Proc.915:693-696,2007

Physics

High Energy Physics

High Energy Physics - Phenomenology

4 pages, to be published in the Proceedings of the 17th International Spin Physics Symposium (SPIN 2006), Kyoto, Japan; Octobe

Scientific paper

10.1063/1.2750874

The electromagnetic form factors of hadrons as measured both in the space like and time like domains provide fundamental information on the nucleon structure and internal dynamics. General expressions, including the lepton mass, for the spin averaged differential cross section for the annihilation reaction lepton antilepton to proton antiproton are given, as well as general formulae for the single and double spin asymmetries. The time reversed reaction would involve a kinematic factor. We also present general expressions for the helicity amplitudes for this reaction.

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