Joint Theory Seminar
Speaker:
Title:
Host:
Room: 432
Abstract:
User:
High-Energy Seminars
Time:
8:10am - 9:00am
Send Reminder:
Yes - 0 days 2 hour 15 minutes before start
Description:
Speaker: Tim Nelson
Title: HPS and the Search for Dark Forces
Host: John Conway
Room: 432
Abstract:
Dark-sector force carriers are a subject of increasing interest, motivated on fundamental grounds as well as by outstanding puzzles related to dark matter interactions and the anomalous magnetic moment of the muon which could be resolved by a new U'(1) symmetry in the hidden sector. While such states are accessible to a number of experimental techniques, the region of masses and couplings of greatest interest makes fixed target experiments with high-intensity beams of electrons in the 1-10 GeV range ideal for direct searches. The Heavy Photon Search (HPS) is a new experiment at Jefferson Lab to search for a massive vector boson, A', in the mass range 20-1000 MeV/c^2 and couplings to electric charge εe, with ε^{2} ≈ 10^{−5} − 10^{−10}. The HPS experiment utilizes high-performance silicon tracking, electromagnetic calorimetry, and data acquisition to distinguish an A' signal from extreme backgrounds in a challenging experimental environment. In spring 2012, the HPS collaboration mounted a test run with a simplified version of the experiment, HPS Test, demonstrating the technical feasibility of the design and verifying background predictions for HPS. The experimental design and results from HPS Test and the plans for the upcoming full HPS experiment will be discussed along with possibilities for future experiments.
Joint Theory Seminar
Speaker: Francesco D'Eramo
Title: Anomaly Mediation from Unbroken Supergravity
Host: Luty
Room: 432
Abstract: In this talk I will show how the sparticle soft masses generated by anomaly mediation, proportional to the gravitino mass, should be associated to unbroken supersymmetry (SUSY). This counterintuitive result arises because the underlying symmetry structure of (broken) supergravity in flat space is in fact (unbroken) SUSY in anti-de Sitter space. When quantum corrections are regulated in a way that preserves SUGRA, the underlying AdS curvature (proportional to the gravitino mass) necessarily appears in the regulated action, yielding soft masses without corresponding goldstino couplings. I will present an explicit calculation for a simple toy model, and then I will state the general result.
User:
High-Energy Seminars
Description:
No seminar-- Final Exams
User:
High-Energy Seminars
Time:
5:10am - 6:10am
Send Reminder:
Yes - 0 days 4 hour 0 minutes before start
Description:
LHC Lunch
Informal lunch with occasional talks
Host: Markus Luty
Speaker:
Title:
Room: 432
Abstract:
User:
High-Energy Seminars
Time:
6:00am - 7:00am
Send Reminder:
Yes - 1 day 4 hour 0 minutes before start
Description:
Joint Theory Seminar
Speaker:
Title:
Host:
Room: 432
Abstract:
User:
High-Energy Seminars
Time:
5:10am - 6:10am
Send Reminder:
Yes - 0 days 4 hour 0 minutes before start
Description:
LHC Lunch
Informal lunch with occasional talks
Host: Markus Luty
Speaker:
Title:
Room: 432
Abstract:
Description:
Christmas Day
Description:
Kwanzaa begins
User:
High-Energy Seminars
Time:
5:00am - 6:00am
Send Reminder:
Yes - 0 days 4 hour 0 minutes before start
Description:
Joint Theory Seminar
Speaker:
Title:
Host:
Room: 432
Abstract:
