Talks | Liu Lab

A video about our research, made for the Physics Open House:

Invited Talks:

2021: Munich Physics Colloquium (online), jointly organized by the TUM, LMU and Munich Max-Planck Institutes, “Goldilocks and the three bears or: How we made the most precise neutron lifetime measurement, and why.” (Dec. 6, 2021).
2021: Institute of Nuclear and Particle Physics Seminar (online), “Goldilocks and the three bears or: How we made the most precise neutron lifetime measurement, and why.” Ohio University, Athens, Ohio (Nov. 30, 2021).
2021: Invited talk (online) in the 11th International Workshop on the CKM Unitarity Triangle (CKM2021), “New results from UCNTau and implication for Vud” hosted by University of Melbourne, Australia (Nov. 23, 2021)
2021: Nuclear and Particle Physics Colloquium, “Fundamental Neutron Physics: Probing TeV Physics with neV neutrons,” MIT, Boston (Nov. 8, 2021).
2021: Invited Closing Talk (online), “Highlights of nEDM2021 Workshop—my personal perspectives,” International Workshop on Searches for a Neutron Electric Dipole Moment, Les Houches School of Physics, France (Feb. 14–19, 2021).
2020: Invited talk (online), “Probing for BSM physics through Precision Measurements of the Neutron Lifetime and the Neutron Electric Dipole Moment,” Workshop on Developing New Directions in Fundamental Physics (DND) 2020, (Vancouver, Nov. 4–6, 2020).
2020: Physics Colloquium (online), “Measuring The Neutron Lifetime: Much Ado About Nothing?” TRIUMF (Vancouver, Canada, Sep. 17, 2020).
2020: Physics Colloquium (online), “The Neutron Lifetime Puzzle,” North Carolina State University (Rayleigh, NC, Aug. 31, 2020).
2020: Invited Talk (online), “Magnetic Bottles for Neutrons and Tritium Atoms,” Project 8 Collaboration Meeting (May 20, 2020).
2020: Physics Colloquium, “Magnetic Trapping the Ultracold Neutrons and The Neutron Lifetime Puzzle,” Illinois Institute of Technology (Chicago, IL, Feb. 27, 2020).
2020: Nuclear Physics Seminar, “A Modern Measurement of the Neutron Lifetime Using Ultracold Neutrons in a Magneto-gravitational Trap,” University of Illinois Urbana-Champaign, (Urbana-Champaign, IL, Feb. 24, 2020).
2020: Review talk, “199Hg as the cohabing and the external magnetometer for the LANL nEDM experiment,” LDRD Project Review (Los Alamos, NM, Jan. 30, 2020).
2019: Invited Talk, “Fundamental Physics Research with Neutrons and Neutrinos,” BESAC subcommittee meeting (Washington DC, Nov 14–15, 2019).
2019: Invited Talk, “New Experimental Techniques: Magnetic Storage of UCN,” INT workshop INT-19-75W Fundamental Symmetries Research with Beta Decay (Seattle, Nov 4–8, 2019).
2019: Plenary Talk, “Current Status and Future Prospects of the EDM measurements,” APS DNP annual meeting (Crystal City, VA, October 14–17, 2019).
2019: Physics Seminar, “A Precision Neutron Lifetime Measurement using UCN in a Magneto-Gravitational Trap,” Oak Ridge National Laboratory (Oak Ridge, TN, September 12, 2019).
2019: Workshop invited talk, “Measuring the Neutron Electric Dipole Moment using an intense Ultracold Neutron Source at Los Alamos,” FRIB Theory Alliance – Topical Program: Hadronic Electric Dipole Moments in the FRIB Era: From Proton to Protactinium (East Lansing, MI, August 12–23, 2019).
2019: Physics Seminar, “Searching for the Electric Dipole Moment of the Neutron to Explain the Matter-Antimatter Imbalance of the Universe,” National Central University (Zhongli, Taiwan, June 16, 2019).
2019: Physics Seminar, “Searching for the Electric Dipole Moment of the Neutron to Explain the Matter-Antimatter Imbalance of the Universe,” National Tsing Hua University (Hsinchu, Taiwan, June 11, 2019).
2019: Physics Seminar, “Searching for the Electric Dipole Moment of the Neutron to Explain the Matter-Antimatter Imbalance of the Universe,” National Taiwan University (Taipei, Taiwan, June 9, 2019).
2019: Physics Colloquium, “Searching for the Electric Dipole Moment of the Neutron to Explain the Matter-Antimatter Imbalance of the Universe,” Academia Sinica (Taipei, Taiwan, May 31, 2019).
2019: The Helmut W. Baer Lecture, “A Modern Precision Neutron Lifetime Measurement using a Magneto-Gravitational Trap,” University of Michigan (Ann Arbor, MI, April. 10, 2019).
2019: Physics Colloquium, “The Neutron Lifetime Puzzle,” University of Toronto, (Toronto, Canada, March. 29, 2019).
2019: Physics Colloquium, “Unresolved Problems in Neutron Decay,” Dartmouth College (Hanover, NH, Feb. 8, 2019).
2018: Workshop invited talk, “Neutron Lifetime Experiments,” Workshop on Beta-decay as A Probe of New Physics, Amherst Center of Fundamental Interactions (Amherst, MA, Nov. 1–3, 2018).
2018: Keynote speaker, “A Modern Precision Neutron Lifetime Measurement using a Magneto-Gravitational Trap,” WE-Heraeus-Seminar on Particle Physics with Cold and Ultra-Cold Neutrons (Physikzentrum Bad Honnef, Germany, Oct. 24–26, 2018).
2018: Physics Colloquium, “Unresolved Problems in Neutron Decay,” Carnegie-Mellon University (Pittsburg, PA, Oct. 8, 2018).
2018: Conference invited talk, “Fundamental Physics at the LANSCE Ultracold Neutron Source,” CAARI 25th Conference on Application of Accelerators in Research and Industry (Grapevine, TX, Aug. 16, 2018).
2018: Three invited lectures on “Neutrons and Fundamental Symmetries Experiments,” National Nuclear Physics Summer School, Yale University (New Haven, CT, July 2018).
2018: Invited Lecture, ”EDMs: an experimental landscape,” the Axions and CP violation workshop (Grenoble, France, May 2018).
2018: Review talk, “UCNτ: LANL Neutron Lifetime Experiment using a Magneto-Gravitational Trap,” Neutron Science Review, Los Alamos National Laboratory (Los Alamos, NM, Mar. 14, 2018).
2018: Physics Colloquium, “A Modern Precision Neutron Lifetime Measurement using a Magneto-Gravitational Trap,” Jefferson Laboratory (Newport News, VA Feb. 7, 2018).
2018: Physics Colloquium, “Unresolved Problems in Neutron Decay,” Indiana University (Bloomington, IN, Jan. 10, 2018).
2017: Nuclear Physics Seminar, “A Modern Precision Neutron Lifetime Measurement using a Magneto-Gravitational Trap,” Argonne National Laboratory (Chicago, IL, Dec. 18, 2017).
2017: Invited conference talk, “Precision Neutron Lifetime Measurement using a Magneto-Gravitational Trap,” SouthEast Section American Physics Society (SESAPS) meeting (Milledgeville, GA, Nov. 18, 2017).
2017: Physics Colloquium, “Unresolved Problems in Neutron Decay,” Caltech (Pasadena, CA, Nov. 16, 2017).
2017: Invited conference talk, “Precision Neutron Lifetime Measurement using a Magneto-Gravitational Trap,” Institute of Nuclear Theory (INT) Workshop on Neutron-Antineutron Oscillations: Appearance, Disappearance, and Baryogenesis, (Seattle, WA, October 23 - 27, 2017).
2017: Nuclear Physics Seminar, “Precision Neutron Lifetime Measurement using a Magneto-Gravitational Trap,” Nortre Dame University (Oct. 2, 2017).
2017: Invited conference talk, “Precision Neutron Lifetime Measurement using a Magneto-Gravitational Trap,” EXA2017, ÖAW (Vienna, Austria, September 14, 2017).
2016: Plenary talk, “Searching for the Electric Dipole Moment of the Neutron: the Holy Grail of Precision Measurements,” the international SPIN conference (Urbana Champaign, IL, September 26–30, 2016).
2016: Invited conference talk, “Physics of Neutron Beta-decay,” the Kavli Institute of Theoretical Physics (KITP) Nuclear Physics Conference on ”Symmetry Tests in Nuclei and Atoms” (Santa Barbara, CA, September 19–23, 2016).
2016: Invited meeting talk, “Contemporary Issues in Fundamental Neutron Physics: the Electric Dipole Moment and the Lifetime,” in the Jefferson Laboratory Users meeting (Newport News, VA, June 20–22, 2016).
2016: Invited workshop talk, “UCNtau: A Precision Measurement of the Neutron Lifetime using a Magneto-Gravitational Trap,” the International Workshop: Probing Fundamental Symmetries and Interactions with UCN (Mainz, Germany, April 10–15, 2016).
2015: Nuclear Physics Seminar, “UCNtau: A Precision Measurement of the Neutron Lifetime,” Yale University (New Haven, CT, Dec. 2, 2015).
2015: Physics Colloquium, “Precision Measurements on Neutron Lifetime: Much Ado about 1 second,” University of Tennessee (Knoxville, TN, Nov. 23, 2015).
2015: Invited conference talk, “UCNtau: A Precision Measurement of the Neutron Lifetime,” the APS Division of Nuclear Physics meeting (Santa Fe, NM, Oct. 29, 2015).
2015: Invited workshop talk, “Overview of the Neutron Lifetime Experiments,” the INT Workshop–Intersections of BSM Phenomenoloty and QCD for New Physics Searches (Seattle, WA, October 2, 2015).
2014: Invited workshop talk, “The Next Generation Bottle Experiment to Measure the Free Neutron Lifetime”, Amherst Center for Fundamental Interactions (Amherst, MA, Sep 19-21, 2014).
2014: Invited conference talk, “Neutron Trapping using a Magneto-Gravitational Trap”, APS April Meeting (Savannah, GA, April 5-8, 2014).
2014: Physics Colloquium, “A New Technique for Measuring the Neutron Lifetime: a lot can happen over one second”, IUPUI (Indianapolis, IN, Feb. 6, 2014).
2014: Physics Colloquium, “A New Technique for Measuring the Neutron Lifetime: a lot can happen over one second”, Indiana University (Bloomington, IN, Jan. 22, 2014).
2014: Review talk, “The UCNτ Apparatus and Recent Results”, DOE meeting with the program directors (Germantown, DC, Jan. 28, 2014).
2013: Physics Colloquium, “Neutron Lifetime: What’s the deal?”, Argonne National Laboratory (Chicago, IL, Nov. 1, 2013).
2012: Nuclear Physics Seminar, “Neutron Lifetime: What’s the deal?”, Ohio University (Athens, OH, Oct 16, 2012).
2012: Invited conference talk, “Ultracold Neutron Production using Cryogenic Solids”, American Conference on Neutron Scattering (Washington DC, June 25, 2012).
2012: Invited workshop talk, “Cold and Ultracold Neutron Source Development”, Project X workshop (Fermilab, IL, June 18, 2012).
2012: Plenary talk, “Review of the Low Energy Precision Frontier parallel sessions”, CIPANP 2012 (St. Petersburg, FL, June 1, 2012).
2012: Plenary talk, “Symmetries in Fundamental Physics”, Shell Science Seminar, National Teachers Association (Indianapolis, IN, March 2012).
2011: Konopinski Colloquium, “Ultracold Neutrons for Low-Energy Particle Physics Experiments”, Physics Department, Indiana University (Bloomington, IN, September 7, 2011).
2011: Physics seminar, “Ultracold Neutrons: a laboratory for low-energy particle physics”, Oak Ridge National Laboratory (Oak Ridge, TN, March 10, 2011).
2011: Invited conference talk, “Ultracold Neutrons: a laboratory for low-energy particle physics”, XXXIV Symposium on Nuclear Physics, (Cocoyoc, Morelos, Mexico, Jan. 4-7, 2011).
2010: Physics seminar, “First Experimental Limit on the Electric Dipole Moment of the Electron using GGG Paramagnetic Insulator”, Physics Division Seminar, Argonne National Laboratory (Chicago, IL, December 20, 2010).
2010: Invited workshop talk, “UCN and SNS neutron EDM”, Workshop on Precision Tests of the Standard Model: from Atomic Parity VIolation to Parity-Violating Lepton Scattering, European Center for Theoretical Studies in Nuclear Physics and Related Areas (Trento, Italy, Nov. 8-12, 2010).
2010: Invited conference talk, “Ultracold Neutrons: producing ideal tools for low-energy particle physics experiments”, UBC2010, 2nd International Ulaanbaatar Conference on Nuclear Physics and Applications (Ulaanbaatar, Mongolia, July 26-30, 2010).
2010: Physics Colloquium, “Ultracold Neutrons: producing ideal tools for low-energy particle physics experiments”, TRIUMF (Vancouver, Canada, June 17, 2010).
2010: Invited workshop talk, “First Experimental Limit on the Electric Dipole Moment of the Electron using GGG Paramagnetic Insulator”, International Workshop on Particle’s EDM and Implications (Shanghai, China, June 14-16, 2010).
2010: Invited workshop talk, “Coherent Neutron Scattering and Its Implications to UCN Production”, UCN2010 (Osaka, Japan, Apr. 8-9, 2010).
2009: Invited workshop talk, “New Approaches to Ultracold Neutron Production”, Workshop on Research Opportunities with Ultracold Neutrons in the US (Santa Fe, NM, Nov 6-7, 2009).
2009: Invited conference talk, “Investigation of New Approaches to Ultra-cold Neutron Production at IUCF”, 3rd Joint Meeting of the APS Division of Nuclear Physics and the Physical Society of Japan (Waikoloa, Hawaii, Oct 13, 2009).
2009: Invited conference talk, “Search for the Electric Dipole Moment of the Electron using Solid-state Techniques”, The 6th Joint Meeting of Chinese Physicists Worldwide International Conference on Physics Education and Frontier Physics, OCPA6 (Lanzhou, China, August 3-7, 2009).
2009: Lectures, “Cold Neutron and Ultracold Neutron Sources”, 2nd Summer School on Fundamental Neutron Physics, NIST (Gaithersburg, VA, June 22-26, 2009).
2009: Invited conference talk, “Searches for the Electric Dipole Moment of the Neutron and the Electron at sub-Kelvin Temperatures”, The 4th International Symposium on Symmetries in Sub-atomic Physics, National Taiwan University (Taipei, Taiwan, June 2-5, 2009).
2009: Physics Colloquium, “Understanding Physics of Ultra-cold Neutron Production in Oxygen: a nuclear physicist’s struggle to master inelastic magnetic scattering”, North Carolina State University (Raleigh, NC, April 27, 2009).
2009: Physics Colloquium, “Ultracold Neutrons: producting ideal tools for low-energy particle physics experiments”, University of Rhode Island (Kingston, RI, April 3, 2009).
2008: Nuclear Physics Seminar, “Experimental Results of Ultracold Neutron Production from Solid Oxygen”, IUCF (Bloomington, IN, December 5, 2008).
2008: Physics Seminar, “Understanding Ultra-cold Neutron Production in Oxygen – A Nuclear Physicist’s Struggle to Master Inelastic Magnetic Scattering” LANSCE (Los Alamos, NM, October 1, 2008).
2008: Invited workshop talk, “Solid Oxygen as an Intense Ultracold Neutron Source”, NP08, the 4th International Workshop on Nuclear and Particle Physics at J-PARC (Mito, Ibaraki, Japan, March 5-7, 2008).
2008: Nuclear physics seminar, “Hunting for Evidence of Time Reversal Symmetry Violation: A Search for the Electric Dipole Moment of the Electron,” MIT (Boston, MA, Feb 6, 2008).
2007: Physics Colloquium, “Hunting for Evidence of Time Reversal Symmetry Violation: A Search for the Electric Dipole Moment of the Electron,” Amherst College (Amherst, MA, November 1, 2007).
2007: Invited talk, “An Overview of the Fundamental Neutron Physics,” in the Fundamental Neutron Physics mini-Symposium, DNP07 (Newport News, VA, October 12 2007).
2007: Invited workshop talk, “Solid Oxygen based UCN source,” Ultracold Neutron Workshop, TRIUMF (Canada, September 13 2007)
2007: Invited conference talk, “Search for a Permanent Electric Dipole Moment of the Electron using a Paramagnetic Insulator,” Gordon Research Conference, Salve Regina University, (Newport, RI, July 18, 2007).
2007: Subatomic Physics Seminar, “Neutron Physics in a Contemporary Perspective,” Los Alamos National Laboratory (Los Alamos, NM, May 10, 2007).
2007: Invited workshop talk, “Solid State EDM,” EDM & CP Violation Workshop (Institute of Nuclear Theory, Seattle, WA, March 2007).
2006: Physics Colloquium, “Is Time Reversal Symmetry Conserved? A Search for the Electric Dipole Moment of the Electron,” Ball State University (Muncie, IN, October 2006).
2006: Invited talk, “Ultra Cold Neutrons,” 18th National Nuclear Physics Summer School (Bloomington, IN, July 2006).
2006: Kellog Nuclear Physics Seminar, “A Search for a Permanent Electric Dipole Moment of the Electron in a Solid State System,” Caltech (Pasadena, CA, June 2006).
2006: Medium Energy Physics Seminar, “Ultra-cold Neutron Source for Fundamental Physics” University of Illinois (Urbana Champaign, IL, April 2006).
2005: Nuclear Physics Seminar, “A Search for a Permanent Electric Dipole Moment of the Electron in a Solid State System,” University of Maryland (College Park, MD, November 2005).
2005: Colloquium, “A Search for a Permanent Electric Dipole Moment of the Electron in a Solid State System,” Illinois Institute of Technology (Chicago, IL, October 2005).
2005: Plenary Talk, “A New Search for a Permanent Electric Dipole Moment of the Electron in a Solid Paramagnetic System,” The 13th International Conference on Supersymmetry and Unification of Fundamental Interactions (Durham, United Kingdom, July 18-23 2005).
2005: Nuclear Physics seminar, “Progress Report on a New Search for a Permanent Electric Dipole Moment of the Electron in a Solid System,” Paul Scherrer Institut (Villigen, Switzerland, July 2005).
2004: Medium Energy Physics Seminar, “A New Search for a Permanent Electric Dipole Moment of the Electron in a Solid State System,” University of Illinois at Urbana-Champaign (Urbana, IL, April 2004).
2004: Nuclear physics seminar, “Experimental Particle Physics at Milli-Kelvin Temperatures – Ultra-cold Neutrons and the Electron Electric Dipole Moment,” Indiana university (Bloomington, IN, Feb. 2004).
2003: Physics seminar, “A Search for Electric Dipole Moment,” the National Center for Theoretical Sciences (Hsinchu, Taiwan, Nov. 2003).
2003: Invited conference talk, “An Electric Dipole Moment Search to Test the CP Violation,” 2003 International Symposium on Cosmology and Particle Astrophysics (The Center for Academic Excellence on Cosmology and Particle Astrophysics, Taipei, Taiwan, Nov. 2003).
2003: Physics/Theory colloquium, “Superthermal Ultra-cold Neutron Sources: A Current Overview and Future Prospects,” Los Alamos National Laboratory (Los Alamos, NM, Feb. 2003).
2002: Invited conference talk, “A Solid Deuterium UCN Source at LANSCE,” nn¯ conference (Bloomington, IN, Sep. 2002).
2001: Atomic physics seminar, “Solid Deuterium UCN Source,” Kyoto University (Kyoto, Japan, May 2001).
2001: Nuclear physics seminar, “Superthermal Ultra-cold Neutron Sources: A Current Project and Future Possibilities,” Indiana University (Bloomington, IN, Feb. 2001).
2000: Invited talk, “Solid Deuterium UCN Source,” UCN workshop (Los Alamos, NM, Sep. 2000).

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Contributed Talks:

2020: “Statistical Biases in the UCNtau Experiment,” 2020 Fall Meeting of the APS Division of Nuclear Physics (Oct. 29–Nov. 1, 2020)
2020: “199Hg as the cohabing and the external magnetometer for the LANL nEDM experiment,” LDRD Project Review Meeting, (LANSCE, Los Alamos, January 30, 2020)
2016: “A Plan for a Ten-fold Improvement of the Neutron Electric Dipole Moment with the LANL UCN Source,” DNP meeting (Vancouver, Canada, Oct. 13-16, 2016)
2013: “Systematic Effects of Trapping UCN in the UCNτ Experiment,” DNP meeting (Newport News, VA, Oct. 23-26, 2013).
2012: “Towards a 0.1 s Measurement of the Neutron Lifetime in a Magneto-Gravitational Trap,” NSAC meeting (Chicago, IL, August 10-11, 2012).
2009: “Magnetic or Not? UCN Production in Solid Oxygen,” 7th International Workshop on Ultra Cold and Cold Neutron Physics and Sources (St. Petersburg, Russia, June 8-14, 2009).
2005: “Progress Report on a search on electric dipole moment of electron in a solid state system,” 5th International Conference on Ultra Cold & Cold Neutrons – Physics & Source (Peterhof, Russia, July 13-18, 2005).
2005: “Solid Oxygen as an Intense UltraCold Neutron Source,” 5th International Conference on Ultra Cold & Cold Neutrons – Physics & Source (Peterhof, Russia, July 13-18, 2005).
2003: “Search for a Permanent Electric Dipole Moment (EDM) of the Electron using a Paramagnetic Crystal,” Symposium 2003 (Los Alamos, NM, Aug. 2003).
2002: “Solid Oxygen as a Source of Ultra-Cold Neutrons,” The APS April Meeting (Albuquerque, NM, Apr. 2002).
2002: “An Apparatus to Store, Polarize and Spin-Flip Ultra-Cold Neutrons,” The APS April Meeting (Albuquerque, NM, Apr. 2002).
2001: “Implementation of an Intense UCN Source Coupled to a Spallation Target at LANSCE,” International Nuclear Physics Conference (Berkeley, CA, Aug. 2001).
2001: “Physics of Superthermal Sources,” The Third International UCN Workshop (Pushkin, Russia, June 2001).
2001: “A Solid Ortho Deuterium Ultra-cold Neutron Source,” The APS April Meeting (Washington, D.C., April 28-May 1, 2001).
2000: “An Apparatus to Convert Para to Ortho Deuterium and Measure the Para Concentration,” Division of Nuclear Physics Fall Meeting 2000 (Williamsburg, VA, Oct. 4-7, 2000).
2000: “Anomalous Up-scattering of UCN by Para Impurities in a Deuterium Superthermal UCN Source at LANSCE,” The APS April Meeting (Long Beach, CA, April 29-May 2, 2000).
1999: “Overview of a Solid Deuterium Superthermal UCN Source at LANSCE,” The Second International UCN Workshop (Pushkin, Russia, June 1999).
1998: “A Solid Deuterium Superthermal Source of Ultra-Cold Neutrons Coupled to Spallation Targets at LANSCE,” Division of Nuclear Physics Fall Meeting 1998 (Santa Fe, NM, Oct. 1998).