Priscilla "Prisca" CushmanProfessor, School of Physics and Astronomy
Ph.D., Rutgers University, 1985
A.B. cum laude, Harvard University, 1976
Exploration into the building blocks of matter through complementary approaches:
(1) SuperCDMS-SNOLAB. Currently the Spokesperson for the experiment. We have set world-leading limits from our earlier experiment at the Soudan Underground Laboratory in northern Minnesota. We were one of two experiments approved through the Generation-2 DOE/NSF initiative to look for Weakly Interacting Massive Particles (or WIMPs). Our new experiment at SNOLAB will look more specifically for very low-mass WIMPS and potential dark sector candidates.
(2) I helped to build the CMS experiment at the Large Hadron Collider in Switzerland. I took part in early runs (e.g. the discovery of the Higgs Particle) and still retain a keen interest in limits on the properties of dark matter production at the LHC.
(3) I was a member of the Muon g-2 Experiment at Brookhaven, where we set the most precise measurement of the magnetic moment of the muon. The three sigma discrepancy between theory and experiment continues to inform the search for new physics that can explain it.
We used to think we understood what everything was made of, from the quarks inside protons and neutrons to the stars and galaxies. We called this the Standard Model of Particle Physics. However, over the last couple decades, it has become obvious that a class of new elementary particles (called dark matter) make up 80% of the matter in the Universe, but do not have a place (yet) in the Standard Model.
My focus these days is trying to understand the nature of that dark matter through direct detection of it as it rains down on us here on Earth. My previous experience in accelerator-based physics informs the design of the detectors and facility. SuperCDMS is a particle physics experiment where the particles are provided by the dark matter that permeates our galaxy and the kinetic energy is provided by the motion of our solar system through the dark matter cloud.
An upgraded SuperCDMS experiment is being installed at SNOLAB, an underground lab 2 km below the Earth's surface in Sudbury, Canada. You can read more about the science and the experiment at https://supercdms.slac.stanford.edu/
Dark matter searches, novel particle detectors, collaborative work in integrative tools for Underground Science, low background techniques [Research Web Page]
Honors and Awards
- Fellow of the American Association for the Advancement of Science
- Fellow of the American Physical Society
- SSC Fellow (TNRLC-DOE)
- Luise Meyer-Schutzmeister Award (APS) for outstanding doctoral work
P. Cushman, Chapter 4. Electromagnetic and Hadronic Calorimeters, Book: "Instrumentation in High Energy Physics". edited by F. Sauli, World Scientific (1992), pp. 281-386.
P. Cushman and D-M Poehlmann, Plastic Scintillator, "Detectors for Particle Physics," Chap. 15 of Plastic Scintillators: Chemistry and Applications. Springer ISBN 978-3-030-73488-6, 2021.
- P. Cushman, "Muon’s Escalating Challenge to the Standard Model" Physics Magazine, April 7, 2021.
- I. Alkhatib et.al. (SuperCDMS Collaboration), "Constraints on Lightly Ionizing Particles from CDMSlite," arXiv:2011.09183 [hep-ex] submitted to Phys.Rev. D (2020)
- I. Alkhatib et.al. (SuperCDMS Collaboration), "Light Dark Matter Search with a High-Resolution Athermal Phonon Detector Operated Above Ground" arXiv:2007.14289 [hep-ex] submitted to PRL (2020)
- D.W.Amaral et al. (SuperCDMS Collaboration), "Constraints on low-mass, relic dark matter candidates from a surface-operated SuperCDMS single-charge sensitive detector" arXiv:2005.14067 [hep-ex]. Phys. Rev. D 102, 091101 (2020)
- T. Aralis et al. (CDMS Collaboration), Constraints on dark photons and axion-like particles from SuperCDMS Soudan, arXiv:1911.11905v3 [hep-ex], Phys.Rev.D 101 5, 052008 (2020)
- N. Mast, M. Fritts, D. Sincavage, P. Cushman, V. Mandic, An In-Situ Movable Calibration Source for Cryogenic Particle Detectors, arXiv:2002.00893v1 [physics.ins-det], Nucl.Instrum.Meth. A 971 (2020) 164070
- D.-M. Poehlmann, D. Barker, H. Chagani, P. Cushman, G. Heuermann, A. Medved, H. E. Rogers, R. Schmitz, "Characterization of Gadolinium-loaded Plastic Scintillator for Use as a Neutron Veto" arXiv:1812.11267 [physics.ins-det]
- R. Agnese et al. (SuperCDMS Collaboration), CDMSLite: Search for Low-Mass Weakly Interacting Massive Particles Using Voltage-Assisted Calorimetric Ionization Detection in the SuperCDMS Experiment., Phys. Rev. Lett. 112, 041302 (2014)
- P. Cushman et al., Snowmass CF1 Summary: WIMP Dark Matter Direct Detection, arXiv:1310.8327 [hep-ex] (2013)
- R. Agnese et al. (CDMS Collaboration), Silicon Detector Dark Matter Results from the Final Exposure of CDMS II, Phys. Rev. Lett. 111, 251301 (2013)
- S. Chatrchyan et al. (CMS Collaboration), Observation of a new boson at a mass of 125 GeV with the CMS experiment at the LHC, Phys.Lett. B716 (2012)
- Z. Ahmed et al, (CDMS Collaboration) Dark Matter Search Results from the CDMS II Experiment, Science 26 March 2010 Vol. 327. no. 5973, pp. 1619 – 1621
- Z. Ahmed et al, (CDMS Collaboration) Low-threshold analysis of CDMS shallow-site data, Phys.Rev. D82:122004, 2010 arXiv:1010.4290
- Z. Ahmed et al, (CDMS Experiment) Search for Axions with the CDMS Experiment, Cover Article: 2 Oct 2009 Phys. Rev. Lett.103, No.141802 (2009) arXiv:0902.4693v1
- Z. Ahmed et al, (CDMS Collaboration) A Search for WIMPs with the First Five- Tower Data from CDMS, Phys. Rev. Lett. 011301 Jan 2009
- G.W. Bennett et al, (Muon (g-2) Collab.) An Improved Limit on the Muon Electric Dipole Moment, Phys. Rev. D 80, 052008 (2009) arXiv:0811.1207v1 [hep-ex]
- G.W. Bennett et al., Search for Lorentz and CPT violation effects in muon spin precession., Phys. Rev. Lett. (2008)
- P. Cushman and B. Sherwood, Lifetime Studies of the 19-channel Hybrid Photodiode for the CMS Hadronic Calorimeter, NIM A - March, (2008)
- G.W. Bennett et al., Statistical equations and methods applied to the precision muon (g-2) experiment at BNL, NIM A579 (2007)
- P.B. Cushman, Dark matter searches: Technology and backgrounds, Nucl. Instr. and Meth. A579 pp 437-442 (2007) [abstract]
- P. Cushman, Low Level Counting Infrastructure and Requirements., Deep Science (NSF DUSEL Initiative) (2006) [abstract]
- Bennet et al. (Muon g-2 Collaboration), Final report of the E821 muon anomalous magnetic moment measurement at BNL, Phys. Rev. D 73, 072003 (2006) [abstract]
- E. Aprile, P. Cushman, K. Ni, P. Shagin, Detection of liquid xenon scintillation light with a silicon photomultiplier, Nuclear Inst. and Methods in Physics Research, A556, p.215-218 (2006) [abstract]
- Akerib et al. (CDMS Collaboration), Limits on spin-dependent WIMP-nucleon interactions from the Cryogenic Dark Matter Search, Phys. Rev. D 73, 011102(R) (2006) [abstract]
- Akerib et al (CDMS Collaboration), Limits on Spin-Independent Interactions of Weakly Interacting Massive Particles with Nucleons from the Two-Tower Run of the Cryogenic Dark Matter Search, Phys. Rev. Lett. 96, 011302 (2006) [abstract]
- P. Cushman, Muon g-2 constraints on SUSY dark matter reviewed and predicted, New Astronomy Reviews Vol 49, Pages 125-131 (2005) [abstract]
- Muon g-2 Collaboration (G.W.Bennett et al.), Measurement of the Negative Muon Anomalous Magnetic Moment to 0.7 ppm, hep-ex/0401008, Physical Review Letters 92, 161802 (2004).
- P.B. Cushman and A.J.Heering, Problems and Solutions in High-rate Multi-channel Hybrid Photodiode Design: The CMS Experience, Transactions in Nuclear Science (TNS-00147-2001), IEEE Trans.Nucl.Sci.49:963-970,2002.
Advisees & Collaborators
- Michael Gardner
- Derek Sincavage
- Jack Nelson
- Zachary Williams
- Matt Fritts
- Himangshu Neog
- Shubham Pandey
- Vuk Mandic (Co-PI for CDMS Group)
- Scott Cray
- Giulia Bulugean
Former Researchers and Students
- D'Ann Barker
- Mark Pepin
- Scott Fallows
- Tommy Hofer
- Allison Kennedy
- Hannah Rogers
- Anthony Villano