Abstract
Cross sections for inelastic scattering of electrons from hydrogen were measured for incident energies from 7 to 17 GeV at scattering angles of 6° to 10° covering a range of squared four-momentum transfers up to 7.4 . For low center-of-mass energies of the final hadronic system the cross section shows prominent resonances at low momentum transfer and diminishes markedly at higher momentum transfer. For high excitations the cross section shows only a weak momentum-transfer dependence.
- Received 19 August 1969
DOI:https://doi.org/10.1103/PhysRevLett.23.930
©1969 American Physical Society
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Letters from the Past - A PRL Retrospective
2008 marked PRL’s 50th anniversary. As part of the celebrations a collection of milestone Letters was started. The collection contains Letters that have made long-lived contributions to physics, either by announcing significant discoveries, or by initiating new areas of research.
Focus
Landmarks—Discovery of Particles inside the Proton
Published 1 August 2014
High-energy collisions between electrons and protons produced the first indications, published in 1969, that smaller constituent particles lurked inside protons.
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