Proton-antiproton annihilation into massive leptons

Abstract

We extend previous calculations of polarization observables for the annihilation reaction $\bar{p}+p\to {\ell }^{-}+{\ell }^{+}$ to the case of heavy leptons, such as the $\tau$-lepton. We consider the case when the beam and/or the target are polarized, as well as the polarization of the outgoing leptons. We give the dependence of the unpolarized cross section, angular asymmetry, and various polarization observables on the relevant kinematical variables in the center of mass and in the laboratory system, with particular attention to the effect of the mass induced terms.

25 pages, 8 figures

References in corpus (6)

• Recoil Polarization Measurements of the Proton Electromagnetic Form Factor Ratio to Q^2 = 8.5 GeV^2
• Polarisation observables in lepton antilepton to proton antiproton reactions including lepton mass
• Helicity amplitudes and crossing relations for antiproton proton reactions
• Study of Two-Photon Corrections in the $p\bar{p}-->e+e-$ Process: Hard Rescattering Mechanism
• Analysis of polarization observables and radiative effects for the reaction $\bar{p}+p\to e^{+}+e^{-}$
• Resonances contribution to two-photon exchange effects and possible large forward-backward asymmetry in $e^{+}{e}^{-}\to p\bar{p}$

Cited by in corpus (6)

• The electromagnetic form factors of the proton in the timelike region
• PANDA Phase One
• Polarization observables in lepton-deuteron elastic scattering including the lepton mass
• Compared analysis of time-like hyperon form factors
• Antiproton--proton annihilation into pion pairs within effective meson theory
• Deuteron wave function for Reid93 potential and polarization observables in elastic lepton-deuteron scattering