[Hallc] Hall D Seminar

[Jennifer McAllister]

________________________________
From: Jlab-seminars <jlab-seminars-bounces at jlab.org> on behalf of Patricia Cheeseboro via Jlab-seminars <jlab-seminars at jlab.org>
Sent: Friday, July 28, 2023 8:10 AM
To: jlab-seminars at jlab.org <jlab-seminars at jlab.org>
Subject: [Jlab-seminars] Hall D Seminar


Hall D Seminar

Remco De Boer

University of Bochum, Germany

F324-325 Thursday, August 3rd @11 am

The ComPWA Project: Speeding up amplitude analysis with a Computer Algebra System

Abstract:

In the ideal world, we describe our models with recognizable mathematical expressions and directly evaluate those models over large data samples with high performance. It turns out that this can be done with a CAS, using its symbolic expression trees as template to computational backends from the Machine Learning community, such as JAX. The CAS can in fact further simplify the expression tree, which can result in speed-ups in the numerical back-end.

The ComPWA project uses this principle to formulate large symbolic expressions for amplitude analysis, so that the user has both the flexibility to quickly implement different formalisms, as well can easily perform fast computations on large data samples. The CAS additionally allows the project to standardize and automatically document these formalisms as they are being implemented.

As an example, we have a look at a recent student by LHCb (arXiv:2301.07010), where symbolic expressions made it possible to quickly compute a polarimeter vector field from Dalitz-plot decomposed (10.1103/PhysRevD.101.034033) amplitude models.



Thanks,

Patricia Cheeseboro

Admin Support Physics (Hall D)

Thomas Jefferson National Accelerator Facility

Jefferson Science Associates, LLC

pcheese at jlab.org<mailto:pcheese at jlab.org>

(757) 269-5345


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