Improve PI0DALITZ model.
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Authored by kreps on Mar 16 2021, 1:24 PM.

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rEVTGENea7551d3aa8d: Improve PI0DALITZ model.

Summary

Improve PI0DALITZ model to dynamically work out maximum probability to make it usuable also for eta --> llgamma decays. Model ETA2MUMUGAMMA is pure one-to-one copy of the PI0DALITZ and as such it is removed.

Test Plan

Will attach some test distributions

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rEVTGEN evtgen

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Event Timeline

kreps created this revision.Mar 16 2021, 1:24 PM

Harbormaster completed remote builds in B176: Diff 248.Mar 16 2021, 1:24 PM

kreps changed the visibility from "All Users" to "Public (No Login Required)".Mar 16 2021, 1:26 PM

kreps changed the edit policy from "All Users" to "Restricted Project (Project)".

kreps added a project: Restricted Project.

Herald added a subscriber: tlatham. · View Herald TranscriptMar 16 2021, 1:26 PM

In following pdf I compare old code and new version for pi0 --> e+e-gamma, eta --> e+e-gamma and eta -- > mu+mu-gamma. In comparison, old code uses artificially increased maximum probability. Nothing changes on the q2 distribution to the point that the two distributions are hard to distinguish.

eta2llgamma.pdf59 KBDownload

Changes look good, Michal. The code is now more general and has excellent agreement with the previous version. Thanks.

This revision is now accepted and ready to land.Mar 16 2021, 9:43 PM

jback edited subscribers, added: Restricted Project; removed: tlatham.Mar 16 2021, 9:44 PM

Closed by commit rEVTGENea7551d3aa8d: Improve PI0DALITZ model. (authored by kreps). · Explain WhyMar 17 2021, 3:45 PM

This revision was automatically updated to reflect the committed changes.