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Pair invariant mass spectrum and polarization asymmetry in the event generation of gamma-ray conversions
- Publication Year :
- 2021
-
Abstract
- We examine the dielectron invariant mass spectrum and the variation of the polarization asymmetry as a function of that mass in the event generator of the five-dimensional Bethe-Heitler differential cross section of the conversion of linearly polarized photons that we have implemented recently as a Geant4 Physics Model. We compare the results obtained with simulated samples to analytical expressions. Studies of $b \to s \gamma$ decays at LHC and Belle II experiments could provide hints of physics beyond the standard model in flavor-changing neutral current processes; issues have been reported in the simulation of the properties of the background induced by genuine $\gamma$-ray conversions in their detectors. Our results demonstrate that using the five-dimensional model would help solve these issues.<br />Comment: v2 : complemented [7] with most recent LHCb result
Details
- Database :
- arXiv
- Publication Type :
- Report
- Accession number :
- edsarx.2102.00985
- Document Type :
- Working Paper
- Full Text :
- https://doi.org/10.1016/j.nima.2021.165163