Home > Research > Publications & Outputs > Exclusive production of proton-antiproton pairs...
View graph of relations

Exclusive production of proton-antiproton pairs in photon-photon collisions

Research output: Contribution to journalJournal article

Published
  • JADE Collaboration
Close
<mark>Journal publication date</mark>1986
<mark>Journal</mark>Physics Letters B
Issue number3
Volume174
Number of pages7
Pages (from-to)350-356
<mark>State</mark>Published
<mark>Original language</mark>English

Abstract

Total and differential cross sections for exclusive production of proton-antiproton pairs in photon-photon collisions have been measured using the JADE detector at PETRA. The total cross section in the CM angular |cos θ∗| < 0.6 reaches a maximum value of 3.8 nb for a γγ invariant mass of Wγγ = 2.25 GeV, and decreases rapidly for higher values of Wγγ. In the range 2.0 GeV < Wγγ < 2.6 GeV the angular distribution is not isotopic. The nucleons are preferentially emitted at large angles to the collision axis.