Features of πΔ photoproduction at high energies

J. Nys; V. Mathieu; C. Fernández-Ramírez; A. Jackura; M. Mikhasenko; A. Pilloni; N. Sherrill; J. Ryckebusch; A.P. Szczepaniak; G. Fox

Physics Letters B (Apr 2018)

Features of πΔ photoproduction at high energies

J. Nys,
V. Mathieu,
C. Fernández-Ramírez,
A. Jackura,
M. Mikhasenko,
A. Pilloni,
N. Sherrill,
J. Ryckebusch,
A.P. Szczepaniak,
G. Fox

Affiliations

J. Nys: Department of Physics and Astronomy, Ghent University, B-9000 Ghent, Belgium; Physics Department, Indiana University, Bloomington, IN 47405, USA; Center for Exploration of Energy and Matter, Indiana University, Bloomington, IN 47403, USA; Theory Center, Thomas Jefferson National Accelerator Facility, Newport News, VA 23606, USA; The George Washington University, Washington, DC 20052, USA; Corresponding author at: Department of Physics and Astronomy, Ghent University, B-9000 Ghent, Belgium.
V. Mathieu: Theory Center, Thomas Jefferson National Accelerator Facility, Newport News, VA 23606, USA
C. Fernández-Ramírez: Instituto de Ciencias Nucleares, Universidad Nacional Autónoma de México, Ciudad de México 04510, Mexico
A. Jackura: Physics Department, Indiana University, Bloomington, IN 47405, USA; Center for Exploration of Energy and Matter, Indiana University, Bloomington, IN 47403, USA
M. Mikhasenko: Universität Bonn, Helmholtz-Institut für Strahlen- und Kernphysik, 53115 Bonn, Germany
A. Pilloni: Theory Center, Thomas Jefferson National Accelerator Facility, Newport News, VA 23606, USA
N. Sherrill: Physics Department, Indiana University, Bloomington, IN 47405, USA; Center for Exploration of Energy and Matter, Indiana University, Bloomington, IN 47403, USA
J. Ryckebusch: Department of Physics and Astronomy, Ghent University, B-9000 Ghent, Belgium
A.P. Szczepaniak: Physics Department, Indiana University, Bloomington, IN 47405, USA; Center for Exploration of Energy and Matter, Indiana University, Bloomington, IN 47403, USA; Theory Center, Thomas Jefferson National Accelerator Facility, Newport News, VA 23606, USA
G. Fox: School of Informatics, Computing, and Engineering, Indiana University, Bloomington, IN 47405, USA

Journal volume & issue: Vol. 779
pp. 77 – 81

Abstract

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Hybrid/exotic meson spectroscopy searches at Jefferson Lab require the accurate theoretical description of the production mechanism in peripheral photoproduction. We develop a model for πΔ photoproduction at high energies (5≤Elab≤16 GeV) that incorporates both the absorbed pion and natural-parity cut contributions. We fit the available observables, providing a good description of the energy and angular dependencies of the experimental data. We also provide predictions for the photon beam asymmetry of charged pions at Elab=9 GeV which is expected to be measured by GlueX and CLAS12 experiments in the near future.

Published in Physics Letters B

ISSN: 0370-2693 (Print); 1873-2445 (Online)
Publisher: Elsevier
Country of publisher: Netherlands
LCC subjects: Science: Physics
Website: http://www.journals.elsevier.com/physics-letters-b/

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