Nuclear and Particle Physics Colloquium (NPPC)


 

Mondays  |  Refreshments 3:30 PM  |  Talk: 4:00 PM  |  Kolker Room, 26-414

 

Committee: William Detmold, Chair ~ Daniel Harlow ~ Philip Harris ~ Or Hen

Colloquia Archives

Fall 2018

 

hosted by: Janet Conrad

Jie Zhao, Purdue University

Winner of the 2018 Lee Grodzins Postdoctoral Award

Search for the chiral magnetic effect in relativistic heavy-ion collisions

Abstract: Metastable domains of fluctuating topological charges can change the chirality of quarks and include local P and CP violations in quantum chromodynamics (QCD). This can lead to observable charge separation along the direction of the strong magnetic field produced in relativistic heavy-ion collisions, a phenomenon called the chiral magnetic effect (CME). An observation of the CME-induced charge separation would confirm several fundamental properties of QCD, namely, restoration of the approximate chiral symmetry, non-trivial topological structures of the QCD vacuum, and local P and CP violations. It could also explain the magnitude of the matter-antimatter asymmetry in the present universe. 

I will discuss the current status of the experimental search for the CME, especially the recent progresses in the understanding of the background issues, and new ideas to search for the CME free of background combinations.

time:    4:00 p.m.
place:   Kolker Room (26-414)


(refreshments at 3:30 p.m.)


 

hosted by: Janet Conrad

Erik Blaufuss, University of Maryland

The Search for Sources of IceCube Astrophysical Neutrinos

Abstract:The IceCube Neutrino Observatory instruments a cubic-kilometer of glacial ice under the Amundsen-Scott South Pole Station, Antarctica to detect neutrinos above ~100 GeV and perform astroparticle observations of the Universe. Astrophysical neutrinos are expected to be created in the birthplaces of high-energy cosmic rays, and point the way back to these elusive sources. Since IceCube's detection of a diffuse flux of high-energy astrophysical neutrinos in 2013, identifying their sources has been the primary science goal. This talk with will present the latest measurements of the astrophysical neutrino flux and highlight results from realtime alerts generated by astrophysical neutrino detections that trigger rapid follow-up observations by the community. In particular, a neutrino alert in September, 2017 triggered world-wide astronomical observations, and provide evidence that the Fermi-LAT identified blazar TXS 0506+056 is the first multi-messenger source producing neutrinos, as well as an accelerator of cosmic rays. Potential upgrades to IceCube will also be discussed, including the physics potential of a future IceCube-Gen2 facility at the South Pole.

time:    4:00 p.m.
place:   Kolker Room (26-414)


(refreshments at 3:30 p.m.)


 

hosted by: TBA

TBA

TBA

Abstract: TBA

time:    4:00 p.m.
place:   Kolker Room (26-414)


(refreshments at 3:30 p.m.)


 

hosted by: Or Hen

Thomas Aumann, IKP Technische Universität Darmstadt

TBA

Abstract: TBA

time:    4:00 p.m.
place:   Kolker Room (26-414)


(refreshments at 3:30 p.m.)


 

Columbus Day Holiday - No Talk this Week

 

hosted by: Will Detmold

Saori Pastore, Washington University in St. Louis

TBA

Abstract: TBA

time:    4:00 p.m.
place:   Kolker Room (26-414)


(refreshments at 3:30 p.m.)


 

hosted by: Phil Harris

David Curtin, University of Toronto

TBA

Abstract: TBA

time:    4:00 p.m.
place:   Kolker Room (26-414)


(refreshments at 3:30 p.m.)


 

hosted by: Daniel Harlow

Brian Swingle, University of Maryland

TBA

Abstract: TBA

time:    4:00 p.m.
place:   Kolker Room (26-414)


(refreshments at 3:30 p.m.)


 

hosted by: TBA

Laura Newburgh, Yale University

TBA

Abstract: TBA

time:    4:00 p.m.
place:   Kolker Room (26-414)


(refreshments at 3:30 p.m.


 

Veterans Day Holiday - No Talk this Week

 

hosted by: TBA

TBA

TBA

Abstract: TBA

time:    4:00 p.m.
place:   Kolker Room (26-414)


(refreshments at 3:30 p.m.)


 

hosted by: TBA

TBA

TBA

Abstract: TBA

time:    4:00 p.m.
place:   Kolker Room (26-414)


(refreshments at 3:30 p.m.)


 

hosted by: TBA

TBA

TBA

Abstract:

time:    4:00 p.m.
place:   Kolker Room (26-414)


(refreshments at 3:30 p.m.)