School of Physics & Astronomy

# Gregory Pawloski

### Associate Professor

PAN 344 (office), 624-7592
pawloski @ physics.umn.edu

Previous Employment:
Research Associate - Stanford University

Professional Service:
Member of Fermilab's Users' Executive Committee for the 2011-2013 term
Member of Local Organizing Committee for the 2013 Snowmass conference

##### Summary of Interests
Neutrino oscillation, Matter-antimatter asymmetries, Physics beyond the standard model

My area of expertise is in experimental high energy physics with experience in both hadron collider and neutrino oscillation physics. Most recently, I have been fascinated by the neutrino sector of particle physics. Although the existence of these particles has been known for many decades, much is still unknown about them. What is the ordering of the neutrinos? Is there CP-violation in the lepton sector? Are neutrinos responsible for leptogenesis? Can neutrinos lead to a discovery of physics beyond the standard model of particle physics? The answers to these questions could have a profound impact on our fundamental understanding of the physical universe.

Currently, I contribute to the MINOS, NOvA, and DUNE experimental collaborations. These experiments study neutrino oscillation phenomena and rely on two distantly separated detectors to measure the composition of the neutrino flavors along a beam line produced at the Fermi National Accelerator Laboratory

In the MINOS collaboration, I am a leader of the analysis effort that is searching for exotic electron-neutrino appearance in a muon neutrino beam. If exotic electron-neutrino appearance is observed, then this would potentially indicate the presence of sterile neutrinos or nonstandard neutrino interactions with matter. Our current limits on nonstandard neutrino interactions can be found here.

In the NOvA collaboration, I am a leader of the analysis effort that is measuring the disappearance of muon neutrinos. During the summer of 2016, we released exciting results from this analysis. A description of the results can be found here.

The DUNE experiment is currently in development and is anticipated to take data in the coming decade. I am involved in the prototyping effort that seeks to record data in a particle beam at CERN.

- Adam Schreckenberger (MINOS, PhD 2013)
- Kanika Sachdev (NOvA, PhD 2015)
- Dominick Rocco (NOvA, PhD 2016)
- Jarrett Brown (DUNE, NOvA, current)

Research Associates:
- Marianna Gabrielyan (MINOS, NOvA, current)

### Selected Publications

NOvA Collaboration, First measurement of electron neutrino appearance in NOvA, Phys. Rev. Lett. [abstract]

NOvA Collaboration, First measurement of muon neutrino disappearance in NOvA, Phys. Rev. D [abstract]

MINOS Collaboration, Observation of muon intensity variations by season with the MINOS Near Detector, Phys. Rev. D [abstract]

MINOS Collaboration, Combined analysis of $\nu_\mu$ disappearance and $\nu_\mu \rightarrow \nu_e$ appearance in MINOS using accelerator and atmospheric neutrinos, Phys. Rev. Lett. [abstract]

MINOS Collaboration, Electron neutrino and antineutrino appearance in the full MINOS data sample, Phys. Rev. Lett. [abstract]

MINOS Collaboration, Improved search for muon-neutrino to electron- neutrino oscillations in MINOS, Phys. Rev. Lett. [abstract]

MINOS Collaboration, New constraints on muon-neutrino to electron-neutrino transitions in MINOS, Phys. Rev. D [abstract]

MINOS Collaboration, Search for muon-neutrino to electron-neutrino transitions in MINOS, Phys. Rev. Lett. [abstract]

D0 Collaboration , First Study of the Radiation-Amplitude Zero in Wγ Production and Limits on Anomalous WWγ Couplings at √s=1.96  TeV, Phys. Rev. Lett. [abstract]

M. Abolins, et al., Design and Implementation of the New D0 Level-1 Calorimeter Trigger, Nucl. Instrum. Meth. A [abstract]

### Education

Rice University
- PhD Thesis: The Study of Wγ Production at DØ: Anomalous Coupling Limits and the Radiation Amplitude Zero