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Differential cross sections for the charge exchange processπ+p →π0(π+p) at 8, 16 and 23 GeV/c

Authors
Journal
Nuclear Physics B
0550-3213
Publisher
Elsevier
Publication Date
Volume
85
Issue
1
Identifiers
DOI: 10.1016/0550-3213(75)90554-4
Disciplines
  • Mathematics

Abstract

Abstract The differential cross section dσ dt′ for the charge-exchange process π +p → π 0 ( π +p) at 8, 16 and 23 GeV/ c is presented for several regions of the π +p effective mass. It is found that the dip at t′ ≈ 0.6 (GeV/ c) 2 which is observed in the Δ(1236) mass band becomes a less pronounced structure in the higher mass regions. However, while the slope of the dσ dt′ distributions in the near-forward direction decreases strongly with increasing π +p mass, there is no evidence that the observed structure moves to higher values of t′ as the π +p mass increases. These results are consistent with a Regge-exchange picture where the position of the dip is determined by the exchanged trajectory, but are inconsistent with a simple geometrical picture.

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