Faculty

NPA Seminar: Yeonju Go, BNL, "Jets and medium response in relativistic heavy ion collisions: Probing quark-gluon plasma"

Quark-gluon plasma (QGP), a unique phase of matter governed by Quantum Chromodynamics (QCD), is believed to have existed shortly (a few microseconds) after the Big Bang. Jets, collimated particle sprays originating from the fragmentation of hard-scattered quarks or gluons, serve as valuable probes for studying QGP produced in relativistic heavy ion collisions. As jets experience modifications due to the surrounding medium, so-called jet quenching, concurrently, jets influence the medium.

Introduction to HPC

This workshop is designed to introduce new users to the HPC resources available at Yale and to provide a comprehensive overview of the basic concepts needed to perform computing on the clusters:
accessing the clusters,
navigating a linux interface via bash commands, running interactive and batch jobs,
managing files,
troubleshooting workflows, and more.

NPA Seminar: Zoltan Varga, Wigner Research Centre for Physics, "Studying the multiplicity dependence of jet properties and the role of the underlying event in pp collisions"

The Koba-Nielsen-Olesen (KNO) scaling hypothesis is an influential contribution to the analysis of event multiplicities in high-energy particle collisions, according to which the event-multiplicity distributions can be all collapsed onto a universal scaling curve. Recent phenomenological studies suggest that a similar scaling may hold within single jets, if we consider the jet multiplicity as a function of the jet transverse momentum.

NPA Seminar: Charles Baltay, Yale, "Precision Measurement of the Hubble Constant Using Type Ia Supernovae"

It has been realized recently that Type Ia supernova are the most sensitive distance indicators in measuring the Hubble Constant. Our Yale group has been collaborating with the Carnegie Observatory Group (Mark Phillips, Wendy Friedman, et al) with our La Silla/QUEST Supernova Survey providing a substantial part of the supernovae for the most recent precision measurement of the Hubble Constant. Results of this measurement will be presented and and its significance discussed.

Host: Thomas Penny

WIDG Seminar: Arianna García Caffaro, Yale, "Probing the Higgs CP Structure and Quantifying QCD Systematics in Jet Substructure Techniques"

Since the Higgs boson’s discovery in 2012, the High Energy Physics community has centered its efforts on thoroughly studying this particle’s properties. As a step towards that goal, the ATLAS Collaboration has undertaken a study of the CP nature of the Higgs Yukawa coupling to the tau lepton. A Run 2 analysis has measured the CP mixing angle to be 9 ± 16°, excluding the pure CP-odd Higgs hypothesis at 3.4σ. The next iteration of this analysis with partial Run 3 data is underway.

ACCESS: Free HPC Resources Available to Researchers

The session will provide an overview of free ACCESS resources, outline the application process for various resource allocations, as well as reporting requirements for successful applications.

If you are a graduate student, post-doc or professor experiencing restrictions via CPU hour limits, gpu access, and/or other resource-related limitations then ACCESS may be the solution for you.

Parallel Programming with Python

This workshop introduces parallel programming concepts and demonstrates their implementation with Python. We will discuss parallel concepts, classes of parallel programs, Python’s implementation of parallel workflows, and showcase several toolkits for CPU and GPU-based parallel programming in Python. Additionally, we will discuss leveraging cluster-infrastructure for large parallel work via Slurm Job Arrays.

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