Department of Physics & Astronomy
University of Pennsylvania

Experimental Particle Physics
Seminars 2018-19

Wednesdays at 4pm in room ***A8

Contact: Associate Professor Evelyn Thomson

See also previous years, theory seminars,
and department colloquia

Tuesday August 7 2018 at 1:30pm in room 2C4
Lawrence Lee (Harvard University)
Searches for Supersymmetry with ATLAS

Monday August 27 2018 at 1:00pm in room 3W2
Sarah Williams (University of Cambridge)
Exploring the landscape of electroweak supersymmetry at the LHC: a quest for a better understanding of dark matter

Thursday September 27 2018 at 3:00pm in room 3C8
Soo-Bong Kim (Seoul National University)
Anomaly of Dancing Reactor Antineutrinos
The Reactor Experiment for Neutrino Oscillation(RENO) started data-taking from August, 2011 and has observed the disappearance of reactor electron antineutrinos to measure the smallest neutrino mixing angle theta13. The experiment has analyzed roughly 2200 days of data to make an accurate measurement of the oscillation amplitude and frequency based on energy and baseline dependent disappearance of reactor antineutrinos. RENO’s precisely measured flux and spectral shape of reactor antineutrinos has shown a deficit in the flux and an excess in the region of 5 MeV relative to the most commonly used model. Furthermore, it has observed fuel-composition dependent variation of reactor antineutrino yield and spectrum. We find that reevaluation of 235U’s antineutrino yield per fission may mostly solve the reactor antineutrino anomaly. We also report a hint of correlation between the 5-MeV excess and the 235U fuel isotope fraction.
Wednesday October 17 2018 at 4:00pm in room 2C2
Shirley Li (SLAC)
Solar neutrino sensitivity of DUNE

Wednesday October 24 2018 at 4:00pm in room A8
Alysia Marino (University of Colorado Boulder)
Recent results from T2K

Wednesday November 7 2018 at 4:00pm in room A8
Or Hen (MIT)
Short-range correlation studies in nuclei

Monday December 10 2018 at 2:30pm in room 4N12
Danielle Norcini (Yale)
First results from the PROSPECT reactor neutrino experiment
Experiments at nuclear reactors have played a key role in determining the properties of the weakly-interacting neutrinos. Results from recent reactor experiments suggest a disagreement between the observed antineutrino flux and energy spectrum when compared to predictions. Beyond the Standard Model sterile neutrinos and corrections to complex nuclear models have been posed to explain the discrepancy. To address this physics, the PROSPECT experiment precisely measures antineutrino energy spectra at multiple, very short baselines (< 10m) from the High Flux Isotope Reactor. This talk details the first sterile neutrino oscillation search and measurement of the uranium-235 antineutrino spectrum from PROSPECT.
Wednesday February 6 2019 at 4:00pm in room A8
Elena Guardincerri (LANL)
Muon Radiography at the Los Alamos National Laboratory and Brunelleschi's dome in Florence
Cosmic-ray muons are free, ubiquitous, very penetrating particles. Muon radiography takes advantage of them to probe objects that, because of their thickness or the shielding around them, would be out of the reach of more traditional radiographic techniques. I will briefly review the different techniques that are currently used to perform cosmic-ray muon radiography and discuss some applications to actual problems. I will discuss, in particular, the use of cosmic ray muons to assess the content of dry casks containing spent nuclear fuel, an important task to maintain continuity of knowledge over the fuel itself and avoid its diversion. I will then show how muon induced neutron emission can be used to image high Z materials. Lastly I will discuss the use of cosmic ray muons to image the interior of thick walls for historic preservation purposes and our plans to image the interior wall of the cathedral of Florence, Italy
**Tuesday February 19 2019 at 1:30pm in room 4N12**
Shaomin Chen (Tsinghua University)
Jinping Neutrino Experiment

**Tuesday March 12 2019 at 1:30pm in room 4N12**
Boris Kayser (Fermilab)
Addressing the Majorana vs. Dirac Question Using Neutrino Decays

Wednesday March 20 2019 at 4:00pm in room A8
Kate Scholberg (Duke)
Coherent neutrino scattering

Wednesday April 3 2019 at 4:00pm in room A8
Richie Bonventre (LBNL)

Wednesday May 1 2019 at 4:00pm in room A8
Brian Beckford (Michigan)
Latest results from KOTO

Possible seminar dates during the 2018-19 academic year are these Wednesdays (* means date booked already)
  • Fall 2018: 9/26*, 10/17*, 10/24*, 11/7*, 11/28*
  • Spring 2019: 1/16, 1/30, 2/6*, 2/27, 3/20*, 4/3*, 4/17, 4/24, 5/1
    Avoid dates of department colloquia (9/12, 10/10, 11/14, 12/5, 1/23, 2/20, 3/13, 3/27, 4/10)