Yongsheng Gao
Assistant Professor of Physics
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Major Research Interest:
- Search for new physics on the ATLAS experiment of the Large Hadron Collider (LHC) at the European Organization for Nuclear Research (CERN) near Geneva, Switzerland.
- My ATLAS research work is currently supported by two National Science Foundation (NSF) grants: $460,000 from Elementary Particle Physics (EPP) (Award number: 0853728, from 8/15/2009 to 7/31/2012, PI) and $620,000 from Major Research Instrumentation (MRI) (Award number: 0959141, from 3/1/2010 to 2/28/2013, PI).
Opportunities for CSU Students to Work at CERN
- If you are interested in opportunities to work on ATLAS research projects at CERN, you can find detailed information at Research Opportunities for CSU Students to Work on ATLAS Experiment of LHC at CERN
My Current and Past Research Work:
- ATLAS Experiment of the Large Hadron Collider (LHC) at European Organization for Nuclear Research (CERN) in Geneva, Switzerland (2002 --- Present)
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Team leader of the ATLAS group at California State University, Fresno (Fresno State) (2007 -- present).
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Initiated and enrolled Fresno State as a collaborating institute of ATLAS and CERN (2007). Among all the 23 CSU campuses, Fresno State is the only one on ATLAS or CMS, the two flagship LHC experiments designed to search for new physics.
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Build up CSU ATLAS Consortium with 11 other CSU campuses (Bakersfield, Chico, Dominguez Hills, Humboldt, Long Beach, Los Angeles, Pomona, Sacramento, San Bernardino, San Francisco, and Stanislaus) participating.
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Build up ATLAS Grid Computing Tier 3 cluster at Fresno State with NSF MRI award. The Fresno State ATLAS Tier 3 cluster, which consists of 136 job slots and 108 TB of raw storage space, is located at the Fresno State IT data center and has been in operation for ATLAS simulations and physics analyses since April, 2011.
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Develop new color-connection jet substructure variables for new physic searches, and new physics searches with jets in final state from ATLAS data (2009 to present): Talks at the ATLAS Standard Model, Higgs and Exotics Working Groups since 2010.
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ATLAS performance studies, Particle identification (PID) fake rates using reflections of known physics processes from incoming real ATLAS data and their impacts on ATLAS physics (2006 to 2008): Talks at the ATLAS Standard Model, Higgs, Exotics, Electron/Photon, Jet/EtMiss, and Tau Working Groups from 2006 to 2008.
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Significance calculation and a new analysis method in searching for new physics at the LHC (2005 -- 2006): Talks at the ATLAS Higgs Working Group in 2005 and 2007. Published in European Physical Journal C45, 659 (2006). This work has been adopted by the ATLAS collaboration for Higgs and new physics searches from incoming ATLAS data.
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Electron/Pion Separation with LAr Barrel Module P15 using 2002 Testbeam Data (2002 -- 2003): ATLAS Note: ATL-LARG-2003-013, published in Nucl. Instrum. Meth. A550, 96 (2005)
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Supervise Fresno State postdocs, graduate and undergraduate students on ATLAS (2008 -- present)
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Supervise postdoc and graduate students at Southern Methodist University (SMU) on ATLAS: Ph.D Thesis advisor of Liang Lu who received his Ph.D in December, 2005. Liang was the first SMU Ph.D on ATLAS and is now the operation president of Bokee Information Technology Co. in Beijing, China
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Set up Computing Farm at SMU as one of the US ATLAS Grid Testbed sites (2003 -- 2004)
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Participate ATLAS Data Challenges through US ATLAS Grid Testbed (2003 -- 2004)
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ATLAS Silicon Microstrip Detector R&D: test FELIX front-end readout chip, beam test and signal/background measurements, published in Nucl. Instrum. Meth. A383, 245 (1996)
- CLEO Experiment at Cornell Electron-positron Storage Ring (CESR) located at Cornell University in Ithaca, NY (1996 --- 2006)
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Team leader of the Southern Methodist University (SMU) CLEO group (2001 -- 2006)
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Precise Measurements of Form Factors of D0/D+ to K/pi e nu, and CKM Matrix Elements Vcs, Vcd. Published in Phys. Rev. Lett. 100, 251802 (2008), and Phys. Rev. D77, 112005(2008)
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Absolute Branching Fraction Measurements of Exclusive D0/D+ Semileptonic Decays: Published in Phys. Rev. Lett. 95, 181802 (2005) and Phys. Rev. Lett. 95, 181801 (2005)
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Wess-Zumino Current and the Structure of the decay Tau to K-K+Pi-nu: Published in Phys. Rev. Lett. 92, 232001 (2004)
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Study of Tau to Three Charged Hadron Decays with CLEO III: Published in Phys. Rev. Lett. 90, 181802 (2003)
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Supervise SMU postdoc Feng Liu on CLEO (2001 -- 2006). Liu is now project physicist at UC-Riverside
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Tracking Systematic Study with CLEO III Detector. CLEO CBX 02-13 by F. Liu and Y. Gao
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First Search for Flavor-Changing-Neutral-Current (FCNC) decay of D0 to GammaGamma: Published in Phys. Rev. Lett. 90, 101801 (2003)
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First Observation of exclusive B to DK* and D*K* Decays: Published in Phys. Rev. Lett. 88, 101803 (2002)
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Search for Flavor-Changing-Neutral-Current (FCNC) Processes B to l+l-K(*): Published in Phys. Rev. Lett. 87, 181803 (2001)
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First Observation of hadronic b to u Transition: Published in Phys. Rev. Lett. 85, 2881 (2000)
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Coordinator of CLEO III Silicon Vertex Detector assembly/testing at Cornell University (1996 to 1999)
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Search for Color-Suppressed B Hadronic Decays: Published in Phys. Rev. D57, 5363 (1998)
- ALEPH Experiment at the Large Electron-Positron (LEP) collider of the European Laboratory for Particle Physics (CERN) in Geneva, Switzerland (1989 --- 1995)
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Search for Charged Higgs Boson in Z Decays: Published in Phys. Lett. B241, 623 (1990)
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Charged Particle Pair Production Associated with a Lepton Pair in Z Decays: Published in Phys. Lett. B263, 112 (1991)
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A Precise Measurement of b Baryon Lifetime: Published in Phys. Lett. B357, 685 (1995) Ph.D Thesis
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Exclusive Reconstruction of /\b baryon: Published in Phys. Lett. B380, 442 (1996)
Teaching at California State University, Fresno
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Spring 2012: General Physics Lab (PHYS 4AL) and Physics Colloquium (PHYS 180)
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Fall 2011: General Physics Lab (PHYS 4AL), ATLAS Research (PHYS 175-T), and Physics Colloquium (PHYS 180)
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Spring 2011: General Physics Lab (PHYS 4AL)
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Fall 2010: General Physics (PHYS 2A) and General Physics Lab (PHYS 4AL)
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Spring 2010: General Physics Lab (PHYS 4AL)
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Fall 2009: Modern Physics (PHYS 102)
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Spring 2009: Particle Physics (PHYS 275T)
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Spring 2009: General Physics Lab (PHYS 4AL)
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Fall 2008: General Physics (PHYS 2A)
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Fall 2008: Introduction to High Energy Physics (Part II) (PHYS 175T-HEP)
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Spring 2008: General Physics (PHYS 2A) (Physics 2A)
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Spring 2008: Introduction to High Energy Physics (Part I) (PHYS 175T-HEP) (Physics 175T-HEP)
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Fall 2007: General Physics (PHYS 2A) (Physics 2A)
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Fall 2007: General Physics Lab (PHYS 4AL) (Physics 4AL)
Recent News and Stories about Fresno State's ATLAS Program at the LHC of CERN
- Fresno Bee 2010/5/17: "New Fresno State computer strengthens research"
- The Collegian 2010/5/12: "Professor brings atom smashing to campus"
- Fresno Bee 2010/4/26: "Fresno State gets $620,000 for computing center"
- Fresno State News 2010/4/26: "Fresno State secures $620,000 grant to lead further collider research"
- ATLAS e-News 2009/11/16: "Profile: Yongsheng Gao"
- The Collegian 2009/10/14: "Fresno State Prof. earns $460K grant"
- Channel 30 News 2008/9/10: "Fresno's Connection to the Big Bang Experiment"
- The Collegian 2008/9/22: "Physics resches milestone"
- Fresno State News 2008/9/10: "Fresno State participates in historic particle collider research"
- Fresno State News 2008/1/3: "Fresno State joins exploration of new frontiers in physics"
ATLAS Experiment
Physics Papers
- SPIRES HEP database at SLAC.
- LANL preprint Archive at Los Alamos.
Other Physics Related Sites (In case you are bored)
- The Particle Adventure: Fundamentals of Matter and Forces
- Explore the particles and the Universe (from CERN online resources)
- Antimatter: Mirror of the Universe
- The Nobel Prize in Physics
- How things work
- The Virtual Laboratory
- Physics 2000: Interactive Demos
- The Wonders of Physics
- Cartoons and Physics Questions (from Amherst College)