The Kinematics of Deep Inelastic Scattering in the Presence of Initial State Radiation

1997/04/11 by Guenter Wolf, Guenter E. Wolf, Wolf, Guenter · 1 citation
Physics and Astronomy · #Electromagnetic Scattering and Analysis #FOS: Physical sciences #High Energy Physics - Experiment (hep-ex) #hep-ex

paper · pdf · doi:10.48550/arxiv.hep-ex/9704006

26 pages including 16 figures

arxiv created 1997/04/11 · openalex publication_date 1997/04/11 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

Initial state radiation (ISR) in deep inelastic scattering of charged leptons on nucleons can lead to substantial shifts in the reconstruction of Q² and the scaling variables x and y. By measuring at least three out of the four variables: energy and production angle of the lepton and the hadron system, the energy of the ISR photon emitted under zero degrees can be determined. The ISR effect is illustrated for experimentation at HERA with different methods of kinematic reconstruction.

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