Seminars & Workshops

The ACFI hosts a weekly seminar series that brings researchers from around the world to present forefront research and interact with ACFI faculty, staff, and students. Informal research presentations by UMass Amherst and visitors take place in the weekly Fundamental Interactions Informal Talk.

The aim of ACFI topical workshops is to provide an opportunity for researchers from around the world to interact in a focused, short-term context to address an important open problem in the Energy, Intensity, or Cosmic frontiers as well as at their intersection. The general scope of the topical workshop is 10-20 participants who meet over a 2-5 day period at UMass Amherst, focusing on a specific problem, and formulating a plan for on-going research at the workshop conclusion.

The ACFI welcomes proposals for a topical workshop, which will be considered on a rolling basis. To submit a proposal, please contact the Director. A list of past workshops and meetings is also available.

Upcoming Workshops & Meetings

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)

Thursday, October 15, 2015 - 9:00am to Saturday, October 17, 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 - 9:00am 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-Champagne)
Stephane Willocq (U. Mass Amherst)