UVA HOME  |  CONTACT US  |  MAP
 
Support UVa's Physics Department! >>
Click here for a printable version of this page.

High Energy Physics Seminars This Term

ics High Energy
Wednesday, September 4, 2019
4:00 PM
Physics Building, Room 204
RESERVED
ics High Energy
Wednesday, September 11, 2019
4:00 PM
Physics Building, Room 204
Available
ics High Energy
Wednesday, September 18, 2019
4:00 PM
Physics Building, Room 204
Available
ics High Energy
Wednesday, September 25, 2019
4:00 PM
Physics Building, Room 204
Available
ics High Energy
Wednesday, October 2, 2019
4:00 PM
Physics Building, Room 204
RESERVED
ics High Energy
Wednesday, October 16, 2019
4:00 PM
Physics Building, Room 204
Available
ics High Energy
Wednesday, October 23, 2019
4:00 PM
Physics Building, Room 204
Available
ics High Energy
Wednesday, October 30, 2019
4:00 PM
Physics Building, Room 204
Dr. Kevin Nash [Host: Chris Neu]
Rutgers University
"CNN Jet Image Tagging: from top measurements to new physics searches"
ABSTRACT:

We detail the application of image recognition to jet tagging in CMS. The method is based on the CNN top tagging optimization seen in arXiv:1803.00107v1 and evolved to include additional color information, b tagging, and an adaptive zoom.  Additionally, we demonstrate how this jet tagging network can be decorrelated from the mass of the progenitor jet, which allows for the possibility of tagging BSM objects. We study the impact on top tagging sensitivity, the data-simulation agreement, and the versatility of the network to accept more exotic signatures.  Finally, we describe the application to the latest BSM physics searches.

ics High Energy
Wednesday, November 6, 2019
4:00 PM
Physics Building, Room 204
Bjoern Penning [Host: Bob Hirosky]
Brandeis University
"Searching for Dark Matter from the Lowest to the Highest Energies "
ABSTRACT:

Dark Matter (DM) is a long standing puzzle in fundamental physics and goal of a diverse research program.  In underground experiments we search for DM directly using lowest possible energy thresholds, at collider we seek to produce dark matter at the very highest energies, and with telescopes we look for telltale signatures in the cosmos. All these detection methods probe different parts of the possible parameter space. I will highlight status of existing and upcoming experiments including new direct detection experiments with world leading sensitivities to start data taking in early 2020. Finally  we’ll discuss how to connect these approaches and how an interdisciplinary program bridging experimental frontiers can provide the most stringent constraints.

 

ics Special High Energy Seminar


Thursday, November 14, 2019
4:00 PM
Physics Building, Room 204
Note special date.
Ruth Pottgen [Host: Craig Dukes]
Lund University
"Light in the Dark-Opening a new window to the Dark Sector "
 
 Slideshow (PDF)
ABSTRACT:

The origin and observed abundance of Dark Matter in the Universe can be explained elegantly by the thermal freeze-out mechanism, leading to a preferred mass range of the Dark Matter particles in the MeV-TeV region. The GeV-TeV mass range is being explored intensely by the variety of experiments searching for Weakly Interacting Massive Particles. The sub-GeV region, however, in which the masses of most of the building blocks of stable matter lie, is hardly being tested experimentally to date.
This mass range occurs naturally in Hidden Sector Dark Matter models. The Light Dark Matter eXperiment (LDMX) is a planned electron-beam fixed-target experiment, that has unique potential to conclusively test models for such light Dark Matter in the MeV to GeV range. This presentation will give an overview of the theoretical motivation, the main experimental challenges and how they are addressed as well as projected sensitivities.

SLIDESHOW:
ics High Energy
Wednesday, December 4, 2019
4:00 PM
Physics Building, Room 204
RESERVED
High Energy Physics Seminars
Craig Dukes (Chair)

To add a speaker, send an email to ecd3m@Virginia.EDU Include the seminar type (e.g. High Energy Physics Seminars), date, name of the speaker, title of talk, and an abstract (if available). [Please send a copy of the email to phys-speakers@Virginia.EDU.]