Extraction of t slopes from experimental γpK+Λ and γpK+Σ0 cross section data

Adam Freese, Daniel Puentes, Shankar Adhikari, Rafael Badui, Lei Guo, and Brian Raue
Phys. Rev. C 96, 044601 – Published 2 October 2017

Abstract

We analyze recent K+ meson photoproduction data from the CLAS collaboration for the reactions γpK+Λ and γpK+Σ0, fitting measured forward-angle differential cross sections to the form AeBt. We develop a quantitative scheme for determining the kinematic region where the fit is to be done, and, from the extracted t-slope B, determine whether single-Reggeon exchange can explain the production mechanism. We find that, in the region 5<s<8.1GeV2, production of the K+Λ channel can be explained by single K+ Reggeon exchange, but the K+Σ0 production channel cannot. We verify these conclusions by fitting the data to a differential cross section produced by the interfering sum of two exponential amplitudes.

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  • Received 2 November 2016
  • Revised 15 August 2017

DOI:https://doi.org/10.1103/PhysRevC.96.044601

©2017 American Physical Society

Physics Subject Headings (PhySH)

Nuclear Physics

Authors & Affiliations

Adam Freese1,2, Daniel Puentes2, Shankar Adhikari2, Rafael Badui2, Lei Guo2, and Brian Raue2

  • 1Argonne National Laboratory, Lemont, Illinois 60439, USA
  • 2Department of Physics, Florida International University, Miami, Florida 33199, USA

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Vol. 96, Iss. 4 — October 2017

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