November 30, 2020 to December 4, 2020
US/Eastern timezone


Announcing Rivetizing Heavy Ion Collisions at RHIC


Dear colleague - 


The workshop on Rivetizing Heavy Ion Collisions at RHIC (RHIC@RHIC) will be held online on November 30 - December 4.  The registration deadline is November 1.  The goal of this interactive workshop is for each participant to implement one published analysis from RHIC in Rivet.  Rivet  (Robust Independent Validation of Experiment and Theory) is a program which takes HEPMC files, the standard output from Monte Carlo models, as input.  When an analysis is implemented in Rivet, the same analysis code can be used to compare to multiple models, easing comparisons between data and models and making it more likely that theorists will compare to your measurement.  A majority of heavy ion generators produce HEPMC output, including AMPT, PYTHIA Angantyr, HIJING, PHSD, JEWEL, and JETSCAPE.


Participants will each select a proposed analysis when they register.  We will vet the analysis to attempt to identify complications which may arise during implementation.  Participants are encouraged to select a single particle spectrum, dihadron correlation, or flow analysis, or may choose to let the organizers select a measurement for them.  Correlation, fluctuation, and reconstructed jet analyses can also be implemented, although we recommend that only experienced analyzers implement these analyses.  Unfortunately, we are not able to accommodate polarized proton measurements, due to the lack of a suitable HEPMC-compatible generator.  We will provide centrality calibration classes for RHIC experiments and assist in the implementation of appropriate options for centrality determination.  We will coordinate analysis over a large-statistics sample of Monte Carlo simulations to prepare plots for validation by experiments.  


The core interactive part of the workshop will take place from 9:00 AM - 12:00 Eastern, with support for individual participants’ problems facilitated over Slack throughout the day.  Participants will commit their code to a git repository to enable organizers to assist with debugging and building up statistics.  Participants are expected to have a basic understanding of C++ programming and git.  Participants are expected to have access to suitable software environment (with support provided for RCF) and format the data for their paper in HEPData if necessary, participating in the HEPData formatting workshop preceding this workshop on November 10 and 17, which also has a registration deadline of November 1.  Theorists as well as experimentalists are welcome to participate in both workshops.


We strongly encourage you to participate!  This is an opportunity to learn how to use Rivet while simultaneously assisting in comparisons between models and a wide range of measurements.  Beginning graduate students and postdoctoral researchers in particular are encouraged to attend!


Christine Nattrass, Antonio Silva, Christian Bierlich, and Leif Lönnblad