XYZ spectroscopy at electron-hadron facilities II: Semi-inclusive processes with pion exchange

Abstract

Semi-inclusive processes are very promising to investigate $XYZ$ hadrons at the next generation of electron-hadron facilities, because they generally boast higher cross sections. We extend our formalism of exclusive photoproduction to semi-inclusive final states. The inclusive production cross sections for charged axial-vector $Z$ states from pion exchange are predicted. We isolate the contribution of $\Delta$ resonances at small missing mass. Production near threshold is shown to be enhanced roughly by a factor of two compared to the exclusive reaction. We benchmark the model with data of semi-inclusive $b_1^{\pm }$ production.

14 pages, 12 figures. Few typos fixed and references updated. Version appeared on PRD

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Cited by in corpus (5)

• The Present and Future of QCD
• Strong Interaction Physics at the Luminosity Frontier with 22 GeV Electrons at Jefferson Lab
• Exotic tetraquarks at the HL-LHC with JETHAD: A high-energy viewpoint
• Photo- and electro-production of narrow exotic states: from light quarks to charm and up to bottom
• XYZ spectroscopy at electron-hadron facilities III: Semi-inclusive processes with vector exchanges