Lorentz contraction, geometry and range in antiproton-proton annihilation into two pions

Bruno El-Bennich, Willem Kloet

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

We present a geometric interpretation of the so-called annihilation range in reactions of the type p̄p → two light mesons based upon Lorentz effects in the highly relativistic final states (γ = Ecm/ 2mc2 ≃ 6.8 - 8.0). Lorentz-boosted meson wave functions, within the framework of the constituent quark model, result in a richer angular dependence of the annihilation amplitudes and thus in higher partial wave contributions (J > 1) than usually obtained. This approach sheds some light on what could be a "short" annihilation range and how it is influenced by the angular distribution of the final states.

Original languageEnglish (US)
Title of host publicationLOW ENERGY ANTIPROTON PHYSICS
Subtitle of host publicationEighth International Conference on Low Energy Antiproton Physics, LEAP'05
Pages35-39
Number of pages5
DOIs
StatePublished - Oct 26 2005
EventLOW ENERGY ANTIPROTON PHYSICS: 8th International Conference on Low Energy Antiproton Physics, LEAP'05 - Bonn, Germany
Duration: May 16 2005May 22 2005

Publication series

NameAIP Conference Proceedings
Volume796
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Other

OtherLOW ENERGY ANTIPROTON PHYSICS: 8th International Conference on Low Energy Antiproton Physics, LEAP'05
CountryGermany
CityBonn
Period5/16/055/22/05

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

Keywords

  • Lorentz effects
  • Mesons
  • Quark models
  • p̄p interactions

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