Past Workshops & Meetings

Thursday, December 6, 2018 - 9:00am to Saturday, December 8, 2018 - 1:00pm


This workshop will discuss theoretical issues relevant for experimental searches for time reversal violation using slow neutrons. It will present the current and projected reach of a range of experimental approaches and explore the interrelationships of the sensitivity to different types of T violation for these experiments. Experimental strategies discussed will include searches for neutron electric dipole moments, searches for T-odd correlations in neutron decay experiments, searches for T-odd effects using polarized neutron dynamical diffraction in non-centrosymmetric perfect crystals, and T-odd effects in forward transmission in polarized neutron optics.

Vincenzo Cirigliano (Los Alamos National Laboratory)
Chen-Yu Liu (Indiana University)
Pieter Mumm (National Institutes of Standards and Technology)
Bradley Plaster (University of Kentucky)
Michael Snow (Indiana University)

Thursday, November 1, 2018 - 9:00am to Saturday, November 3, 2018 - 1:00pm


This workshop will address the following questions: Which experimental approaches provide the most promising probes for new physics via neutron and nuclear beta decays? What theoretical input is required to ensure experiments achieve optimal sensitivity? We hope to provide a road-map for progress on the theory of nuclear decays and the beyond standard model scenarios they test to ensure the maximum impact for ongoing and planned experiments.

A central focus will be the evaluation of the beta energy dependence of decay observables, including the total decay spectrum, and and angular correlations, where new techniques promise, in principle, sensitivity below the 0.1% level, but will also assess the role of ongoing integral angular correlation work in neutrons and nuclei. Through dialog involving theorists and experimentalists, we expect to identify critical theory needs and the resources to address the identified problems. Some attention to important BSM scenarios and how to develop these in light of the results from the LHC will also be addressed. We plan to produce a white paper describing the most promising experiments, the theoretical issues which must be addressed, and the resources required to address them.

Vincenzo Cirigliano (Los Alamos National Laboratory)
Alejandro Garcia (University of Washington)
Rajan Gupta (Los Alamos National Laboratory)
Michael Ramsey-Musolf (UMass Amherst)
Albert Young (North Carolina State University)

Thursday, March 29, 2018 - 9:00am to Saturday, March 31, 2018 - 1:00pm


Explaining the cosmic matter-antimatter asymmetry requires CP-violation beyond that of the Standard Model. Electric dipole moment searches and measurements of CP-violating observables in heavy quark systems place tight constraints on new CP-violation at and below the weak scale. Next generation EDM searches and heavy flavor probes, together with prospective collider tests, will have considerably greater sensitivities. This workshop will explore how these future probes of CP-violation may provide tests of scenarios proposed to explain the matter-antimatter asymmetry.

Stefania Gori (U. Cincinnati)
Kaori Fuyuto (UMass Amherst)
Ann Nelson (U. Washington)
Michael Ramsey-Musolf (UMass Amherst)

Tuesday, October 31, 2017 - 9:00am to Friday, November 3, 2017 - 1:00pm


The school is designed to provide theoretical background for Neutrinoless Double Beta Decay (NLDBD) experimentalists. The focus will be on pedagogical lectures, informal discussions with ample time for Q&A, and simple exercises. The goal is to enable participants to obtain an up-to-date picture of the physics of NLDBD, including the interplay with neutrino mass models, nuclear & hadronic structure, and the high energy and cosmic frontiers. Topics will include:

* Basic physics of NLDBD & Majorana neutrinos
* Nuclear & hadronic structure for NLDBD
* Interplay with other searches for physics beyond the Standard Model

The lecturers will be Jon Engel (U. North Carolina), Michael Ramsey-Musolf (UMass), and Petr Vogel (Caltech).

Thursday, September 28, 2017 - 9:00am to Saturday, September 30, 2017 - 1:00pm


The gamma-boson exchange diagram plays an important role in a number of different areas of nuclear and particle physics. Two-photon exchange in elastic lepton-nucleon scattering is believed to become large at high momentum transfers to explain a large discrepancy in the proton elastic form factor determination. The gamma-Z box diagram is a significant contribution to the asymmetry in parity-violating electron scattering. Finally, the gamma-W diagram enters into beta-decays which are used to constrain fundamental elements of the Standard Model. The purpose of the workshop is to bring together both theorists and experimentalists in these different areas to improve our understanding of this important process.

Jan Bernauer, Massachusetts Institute of Technology
Doug Hasell, Massachusetts Institute of Technology
Michael Kohl, Hampton U & Jefferson Lab
Richard Milner, Massachusetts Institute of Technology
Michael Ramsey-Musolf, UMass Amherst