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Few-Body Systems

, 59:130 | Cite as

Exclusive \(\varvec{\pi ^{-}}\) Electroproduction Off the Neutron in Deuterium in the Resonance Region

  • Ye Tian
  • Ralf W. Gothe
Article
Part of the following topical collections:
  1. NSTAR 2017

Abstract

The goal of our research is to provide the exclusive \({\gamma }^{*}n(p) \rightarrow p{\pi }^{-} (p)\) reaction cross section from deuterium data. The existing \({\gamma }^{*}n \rightarrow p{\pi }^{-}\) event generator based on MAID (Drechsel et al. in Nucl Phys A 645:145, 1999) is modified to include the spectator (proton) information based via the CD-Bonn potential (Entem and Machleidt in Phys Rev C 68:041001, 2003) to simulate the quasi-free production process. With this method, the exclusive quasi-free process has been isolated successfully as demonstrated by the comparison of the spectator momentum distribution of the simulation with the missing momentum distribution of the data, and a kinematical final-state-interaction contribution factor \(R_{FSI}\) is extracted directly from the data according to the ratio between the exclusive quasi-free and full cross sections. Furthermore, the corresponding structure functions are extracted from those cross sections as well. The experiment was done in Hall B at the Thomas Jefferson National Laboratory (JLab) by using the CEBAF Large Acceptance Spectrometer (CLAS) detector, the “e1e” run data off a liquid deuterium target will provide final results with a kinematic coverage for the hadronic invariant mass (W) up to \(1.825\,\text {GeV}\) and in the momentum transfer (\(Q^{2}\)) range of 0.4–\(1.0\,\text {GeV}/c^{2}\).

References

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    D.R. Entem, R. Machleidt, Accurate charge-dependent nucleon-nucleon potential at fourth order of chiral perturbation theory. Phys. Rev. C 68, 041001 (2003)ADSCrossRefGoogle Scholar
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    J.V. Morris et al., Phys. Lett. B 73, 495 (1978)ADSCrossRefGoogle Scholar
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    D. Drechsel et al., Nucl. Phys. A 645, 145 (1999)ADSCrossRefGoogle Scholar
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    R.A. Arndt et al., Chin. Phys. C 33, 1063 (2009)ADSCrossRefGoogle Scholar

Copyright information

© Springer-Verlag GmbH Austria, part of Springer Nature 2018

Authors and Affiliations

  1. 1.Newport NewsUSA
  2. 2.Syracuse UniversitySyracuseUSA
  3. 3.University of South CarolinaColumbiaUSA

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