Joint Physics Analysis Center

Joint Physics Analysis Center
Name	Joint Physics Analysis Center
Formation	2014
Headquarters	George Washington University
Type	Research consortium
Leader title	Director
Leader name	Adam Szczepaniak

Joint Physics Analysis Center

The Joint Physics Analysis Center is an international research consortium focused on theoretical and phenomenological studies in hadron spectroscopy, scattering theory, and amplitude analysis. Founded to bridge institutions across the United States, France, Germany, Italy, and United Kingdom, the center brings together researchers from universities and laboratories such as George Washington University, Jefferson Lab, CERN, Brookhaven National Laboratory, and INFN. Its activities interface with experiments at facilities including GlueX, COMPASS, LHCb, Belle II, and PANDA.

History

The consortium was established in 2014 with initiatives from scholars at George Washington University, Jefferson Lab, and collaborators from CERN and Institut de Physique Nucléaire de Lyon. Early efforts built on methodologies developed in studies at SLAC National Accelerator Laboratory, Brookhaven National Laboratory, and theoretical frameworks influenced by work at ITP Santa Barbara and Perimeter Institute. Over time, the center expanded via partnerships with University of Valencia, Ruhr University Bochum, and National Taiwan University, responding to results from BaBar, Belle, and LEPS.

Mission and Objectives

The center's mission emphasizes rigorous amplitude analysis and the extraction of resonance parameters compatible with results from GlueX, COMPASS, LHCb, Belle II, and PANDA. Objectives include developing analytic tools rooted in S-matrix theory as formulated by researchers at Princeton University, implementing coupled-channel techniques linked to studies at MIT, and providing open software and datasets used by groups at University of Cambridge, University of Barcelona, and University of Bonn.

Organizational Structure

Governance is provided via a steering committee with representatives from institutions such as George Washington University, Jefferson Lab, CERN, INFN, and University of Mainz. Working groups focus on amplitude analysis, lattice-QCD comparisons, and reaction theory, mirroring collaborations with Columbia University, Yale University, University of Maryland, and Ohio State University. The center organizes workshops and schools hosted at venues including Jefferson Lab, CERN, TRIUMF, and RIKEN, drawing participants from University of Tokyo, University of California, Berkeley, and Ecole Polytechnique.

Research Areas and Projects

Research spans hadron spectroscopy, exotic hadrons, coupled-channel dynamics, and three-body decays, building on theoretical advances associated with S-matrix, Regge theory, and dispersion relations pioneered by scholars at Cambridge University and Harvard University. Projects include amplitude analysis toolkits used in analyses of GlueX photoproduction, study of tetraquark candidates in data from LHCb and Belle II, and modeling of baryon resonances with inputs from PANDA and COMPASS. Collaborative studies compare results with lattice-QCD computations from JLab LQCD, HPQCD, and groups at RIKEN Computational Science Center.

Collaborations and Partnerships

The center has formal and informal partnerships with experimental collaborations such as GlueX, COMPASS, LHCb, Belle II, PANDA, BaBar, and CLAS12. Institutional partners include George Washington University, Jefferson Lab, CERN, INFN, TRIUMF, and KEK. It engages with theory centers including Perimeter Institute, Institute for Advanced Study, IPHT Saclay, and Ecole Normale Supérieure to coordinate analyses and organize joint workshops with representatives from University of Bonn, University of Barcelona, and Ruhr University Bochum.

Publications and Data Releases

Members publish peer-reviewed articles in journals such as Physical Review Letters, Physical Review C, Journal of High Energy Physics, and European Physical Journal A. The center distributes analysis codes and amplitude parameterizations that have been cited in studies from GlueX, COMPASS, and LHCb collaborations, and contributes to data preservation efforts aligned with initiatives at CERN Open Data and HEPData. Workshops produce proceedings presented at conferences like Quark Confinement and the Hadron Spectrum Conference, Topics in Hadron Physics, and International Symposium on Lattice Field Theory.

Impact and Recognition

The center's methodologies have influenced resonance extractions cited by groups at Jefferson Lab, CERN, and Brookhaven National Laboratory and have been referenced in reviews appearing in Reviews of Modern Physics and Annual Review of Nuclear and Particle Science. Its training programs and schools are recognized by participants from University of California, San Diego, University of Chicago, University of Illinois Urbana-Champaign, and University of Pennsylvania for advancing expertise in amplitude analysis, contributing to career development within collaborations such as LHCb and Belle II.

Category:Physics research institutes Category:Hadron spectroscopy