https://doi.org/10.1140/epjc/s10052-019-6914-1
Regular Article - Theoretical Physics
Hard diffraction in photoproduction with Pythia 8
1
Institute for Theoretical Physics, Tübingen University, Auf der Morgenstelle 14, 72076, Tübingen, Germany
2
Department of Physics, University of Jyvaskyla, P.O. Box 35, 40014, Jyvaskyla, Finland
3
Department of Astronomy and Theoretical Physics, Lund University, Sölvegatan 14A, 223 62, Lund, Sweden
* e-mail: christine.rasmussen@thep.lu.se
Received:
18
January
2019
Accepted:
3
May
2019
Published online:
16
May
2019
We present a new framework for modeling hard diffractive events in photoproduction, implemented in the general purpose event generator Pythia 8. The model is an extension of the model for hard diffraction with dynamical gap survival in 
and 
collisions proposed in 2015, now also allowing for other beam types. It thus relies on several existing ideas: the Ingelman–Schlein approach, the framework for multiparton interactions and the recently developed framework for photoproduction in 
, 
, 
and 
collisions. The model proposes an explanation for the observed factorization breaking in photoproduced diffractive dijet events at HERA, showing an overall good agreement with data. The model is also applicable to ultraperipheral collisions with and 
beams, and predictions are made for such events at the LHC.
© The Author(s), 2019
