Past Workshops & Meetings

Monday, December 14, 2015 - 9:00am to Wednesday, December 16, 2015 - 2:00pm

Lederle Graduate Research Tower (LGRT) 419B, UMass Amherst

The goal of the workshop is to bring together a small group of theorists, experimentalists, and observers to address the relative implications of terrestrial, astrophysical, and cosmological probes of neutrino mass. With the prospect of order of magnitude improvements in the sensitivities of kinematic mass determinations, two-order of magnitude improvements in the lifetime sensitivity of neutrinoless double beta-decay searches, and significant advances in determinations of the sum of neutrino masses from large scale structure and the CMB, it is timely to delineate what a comparison of results from these, other laboratory and cosmological probes, and simulations might imply.

George Fuller (U. California San Diego)
Lorenzo Sorbo (U. Mass Amherst)
Michael Ramsey-Musolf (U. Mass Amherst)

Thursday, November 12, 2015 - 9:45am to Saturday, November 14, 2015 - 2:00pm

Lederle Graduate Research Tower (LGRT) 419B, UMass Amherst

New long-lived particles are predicted in many beyond the standard model theories. They have been extensively searched for in collider data, most recently in Run 1 of the LHC. As the community prepares for Run 2 analysis, there is a need to examine the previous searches, identify weak or uncovered areas, and develop a coherent strategy targeting all possible scenarios. The goal of the workshop is to bring experimentalists and theorists together to discuss these issues and help improve the coverage, flexibility, and future utility of LHC searches for long-lived particles, to ensure that potential long-lived BSM particles do not escape detection at the LHC.

Stefania Gori (Perimeter Institute & U. Cincinatti)
Eva Halkiadakis (Rutgers U.)
Michele Papucci (Lawrence Berkeley National Laboratory)
Michael Ramsey-Musolf (U. Mass Amherst)
Jessie Shelton (U. Illinois Urbana-Champaign)
Stephane Willocq (U. Mass Amherst)

Thursday, September 17, 2015 - 9:00am to Saturday, September 19, 2015 - 2:00pm

Lederle Graduate Research Tower (LGRT) 419B, UMass Amherst

This will be the first in a series of workshops focusing on the physics opportunities with a next generation proton-proton collider.

The goal of the workshop is to identify the high energy collider signatures associated with different scenarios for the electroweak phase transition, focusing on opportunities for a next generation pp collider. Exploring the thermal history associated with electroweak symmetry breaking is a question at the forefront of particle physics and cosmology. In the Standard Model, EWSB is associated with a cross over transition. However, in a variety of well-motivated SM extensions, the nature of the EWSB transition may be different. Of particular interest is the possibility of a first order electroweak phase transition that would provide conditions needed for electroweak baryogenesis.

The format will involve a mixture of informal talks and discussions including both theorists and experimentalists. We anticipate that the workshop will lead to new dedicated studies to identify the physics reach of a ~ 100 TeV pp collider with respect to the electroweak phase transition.

Andrey Katz (U. Geneva & CERN)
Ashutosh Kotwal (FNAL & Duke U.)
Tao Liu (Hong Kong U. Science & Technology)
Michelangelo Mangano (CERN)
Michael Ramsey-Musolf (U. Mass. Amherst)
Shufang Su (U. Arizona)

Friday, May 1, 2015 - 9:00am to Sunday, May 3, 2015 - 12:00pm

Lederle Graduate Research Tower (LGRT) 419B, UMass Amherst

A variety of extended Higgs sector models contain new sources of CP-violation that may have implications for the origin of the cosmic baryon asymmetry. The goal of the workshop is to identify the existing low-energy constraints on Higgs CP violation as well as the possible signatures at high-energy colliders. Given the imminent start of Run II at the LHC, the prospects of significantly more sensitive low-energy CPV probes, and developing plans for future lepton and hadron colliders, it is timely to explore in detail the best strategies for uncovering CP-violation in Higgs sector extensions.

Wolfgang Altmannshofer
Stefania Gori
JoAnne Hewett
Michael Ramsey-Musolf
Yue Zhang

Thursday, January 22, 2015 - 9:00am to Saturday, January 24, 2015 - 2:00pm

Lederle Graduate Research Tower (LGRT) 419B, UMass Amherst

Electric dipole moments are amongst the most sensitive probes of theories beyond the standard model and novel mechanisms for CP violation. The interpretation of searches for EDMs of nucleons, atoms, and molecules depends on computations of hadronic matrix elements of underlying CP-violating operators. This workshop will assess the present status of these computations and develop a roadmap for pursuing refined hadronic matrix element calculations.

Vincenzo Cirigliano (Los Alamos National Laboratory)
Rajan Gupta (Los Alamos National Laboratory)
Taku Izubuchi (Brookhaven National Laboratory)
Michael Ramsey-Musolf (UMass Amherst)