Richard Lebed

Professor
Faculty
TEMPE Campus
Mailcode
1504
Professor
Faculty
TEMPE Campus
Mailcode
1504

Biography

Richard Ledbed's research involves studying the properties of, and interactions between, particles at the most elementary level. One of the most fruitful ideas in the history of particle physics has been the recognition that beautiful symmetries interlace the fabric of physical theories, and not only tell us a great deal about how particles interact, but even restrict the types of particles that can exist. He has worked in a number of theoretical subfields of particle physics, for example: i) What if the structure of spacetime is not smooth, but rather coordinate operators fail to commute, just like x and px in quantum mechanics? How can we tell? ii) Why is there a three-fold replication of fermions in the Standard Model? For example, the muon appears to be just a heavy replica of the electron. If we build a symmetry that explains this redundancy, what does it imply about neutrino masses and mixing? iii) The theory of strong interactions, QCD, has three color charges. What if this number were different? How would properties like the mass of protons and neutrons change? iv) Why has it taken so long to discover ``exotic'' strongly interacting particles that are bound states in categories other than triples of quarks (like protons and neutrons) or quark-antiquark pairs (like pions), and how are these exotics assembled?

Education

Ph.D. University of California-Berkeley 1994

Publications

  • Spectroscopy of Exotic Hadrons Formed from Dynamical Diquarks, Richard F. Lebed, Physical Review D [under review] (2017).

  • Heavy-Quark Hybrid Mass Splittings: Hyperfine and "Ultrafine", Richard F. Lebed and Eric S. Swanson, Physical Review D [under review] (2017).

  • Quarkonium h States As Arbiters of Exoticity, Richard F. Lebed and Eric S. Swanson, Physical Review D (2017).

  • Model-Independent Constraints on Hadronic Form Factors with Above-Threshold Poles, Irinel Caprini, Benjamin Grinstein, and Richard F. Lebed, Physical Review D (2017).

  • Richard F. Lebed, Ryan E. Mitchell, and Eric S. Swanson, Heavy Quark QCD Exotica, Progress in Particle & Nuclear Physics (2016).

  • Stanley J. Brodsky, Richard F. Lebed, and Valery E. Lyubovitskij, QCD Compositeness As Revealed in Exclusive Vector Boson Reactions Through Double-Photon Annihilation: e+e- to gamma V^0, Physics Letters B (2017).

  • Richard F. Lebed, How Often Do Diquarks Form? A Very Simple Model, Physical Review D (2016).

  • Richard F. Lebed, Exotic Discoveries in Familiar Places: Theory of the Onia and Exotics, Proceedings of Science BEAUTY2016 (2016).

  • Henry Lamm and Richard F. Lebed, High Resolution Nonperturbative Light-Front Simulations of the True Muonium Atom, Physical Review D (2016).

  • Richard F. Lebed and Antonio D. Polosa, chi_c0(3915) As the Lightest ccss State, Physical Review D (2016).

  • Henry Lamm and Richard F. Lebed, Nonperturbative True Muonium on the Light Front with TMSWIFT, Few Body Systems (2016).

  • R.A. Briceno et al., Issues and Opportunities in Exotic Hadrons, Chinese Physics C (2016).

  • Richard F. Lebed, Do the P^+_c Pentaquarks Have Strange Siblings?, Physical Review D (2015).

  • Richard F. Lebed, Diquark Substructure in Phi Photoproduction, Physical Review D (2015).

  • Benjamn Grinstein and Richard F. Lebed, Above-Threshold Poles in Model-Independent Form Factor Parametrizations, Physical Review D (2015).

  • Richard F. Lebed, The Pentaquark Candidates in the Dynamical Diquark Picture, Physics Letters B (2015).

  • Stanley J. Brodsky and Richard F. Lebed, The QCD Dynamics of Tetraquark Production, Physical Review D (2015).

  • Samuel H. Blitz and Richard F. Lebed, Tetraquark Cusp Effects from Diquark Pair Production, Physical Review D (2015).

  • Henry Lamm and Richard F. Lebed. True Muonium (mu^+ mu^-) on the Light Front. Journal of Physics G (2014).
  • Stanley J. Brodsky, Dae Sung Hwang, Richard F. Lebed. Dynamical Picture for the Formation and Decay of the Exotic XYZ Mesons. Physical Review Letters (2014).
  • Thomas D. Cohen and Richard F. Lebed. Are There Tetraquarks at Large Nc in QCD(F)?. Physical Review D (2014).
  • Thomas D. Cohen and Richard F. Lebed. Tetraquarks with Exotic Quantum Numbers at Large Nc in QCD(AS). Physical Review D (2014).
  • Richard F. Lebed and Russell H. TerBeek. Precision Electroweak Constraints on the N=3 Lee-Wick Standard Model. Physical Review D (2013).
  • Richard F. Lebed and Russell H. TerBeek. Precision Electroweak Constraints on the N=3 Lee-Wick Standard Model. Physical Review D (2013).
  • Aleksey Cherman, Thomas D. Cohen, Richard F. Lebed. Alternate 1/Nc Expansions and SU(3) Breaking from Baryon Lattice Results. Physical Review D (2012).
  • Richard F. Lebed and Russell H. TerBeek. Collider Signatures of the N=3 Lee-Wick Standard Model. Journal of High Energy Physics (2012).
  • A. V. Belitsky, Richard F. Lebed, and Van E. Mayes. Realistic Four-Generation MSSM in Type II String Theory. Physics Letters B (2011).
  • Christopher D. Carone and Richard F. Lebed. Tribimaximal Neutrino Mixing from A_4 Replication. Physics Letters B (2011).
  • Richard F. Lebed and Russell H. TerBeek. Baryon Magnetic Moments in Alternate 1/N_c Expansions. Physical Review D (2011).
  • Richard F. Lebed and Van E. Mayes. Gauged Baryon and Lepton Number in MSSM_4 Brane Worlds. Physical Review D (2011).
  • Richard F. Lebed and Van E. Mayes. Natural Four-Generation Mass Textures in MSSM Brane Worlds. Physical Review D (2011).
  • Thomas D. Cohen, Daniel L. Shafer, Richard F. Lebed. Baryons in QCD_AS at Large N_c: A Roundabout Approach. Physical Review D (2010).
  • Aleksey Cherman, Thomas D. Cohen, Richard F. Lebed. All You Need Is N: Baryon Spectroscopy in Two Large N Limits. Physical Review D (2009).
  • Christopher D. Carone, Richard F. Lebed. A Higher-Derivative Lee-Wick Standard Model. Journal of High Energy Physics (2009).
  • Christopher D. Carone, Richard F. Lebed. A Higher-Derivatve Lee-Wick Standard Model. Journal of High Energy Physics (2009).
  • Christopher D. Carone, Richard F. Lebed. Optimal Parametrization of Deviations from Tribimaximal Form of the Neutrino Mass Matrix. Physical Review D (2009).
  • Rchard F. Lebed and Lang Yu. Pion Electroproduction Amplitude Relations in the 1/N_c Expansion. Physical Review D (2009).
  • Stanley J. Brodsky, Richard F. Lebed. Production of the Smallest QED Atom: True Muonium (mu^+ mu^-). Physical Review Letters (2009).
  • Christopher D. Carone, Richard F. Lebed. Minimal Lee-Wick Extension of the Standard Model. Physics Letters B (2008).
  • Herry J. Kwee, Richard F. Lebed. Pion Form Factor in Improved Holographic QCD Backgrounds. Physical Review D (2008).
  • Herry Kwee, Richard Lebed. An Identity on SU(2) Invariants. Journal of Physics A (2008).
  • Herry Kwee, Richard Lebed. Pion Form Factors in Holographic QCD. Journal of High Energy Physics (2008).
  • Herry J. Kwee, Richard F. Lebed. The Pion Form Factor in AdS/QCD. World Scientific (2008).
  • Herry Kwee, Richard Lebed. 1/N_c Corrections in Meson-Baryon Scattering. Journal of High Energy Physics (2007).
  • Herry Kwee, Richard Lebed. Pi N --> Multi-Pi N Scattering in the 1/N_c Expansion. Physical Review D (2007).
  • Lebed, Richard. Baryons and Large N_c in Happy Resonance. World Scientific (2007).
  • Richard Lebed. The Large N_c Baryon-Meson I_t = J_t Rule Holds for Three Flavors. Physics Letters B (2006).
  • Richard Lebed, Carl Carlson, Christopher Carone, Herry Kwee. Diquark Correlations from Nucleon Charge Radii. Physics Letters B (2006).
  • Thomas Cohen, Richard Lebed. Decoupling Spurious Baryon States in the 1/N_c Expansion of QCD. Physical Review D (2006).
  • Thomas Cohen, Richard Lebed. Interplay of the Chiral and Large N_c Limits in Pi N Scattering. Physical Review D (2006).
  • Lebed, Richard. Describing the Baryon Spectrum with 1/N_c QCD. World Scientific (2006).
  • Lebed, Richard. The 1/N_c Approach for Baryon Resonances. World Scientific (2006).
  • Thomas Cohen, Daniel Dakin, Richard Lebed, Daniel Martin. Pion Photoproduction Amplitude Relations in the 1/N_c Expansion. Physical Review D (2005).
  • Thomas Cohen, Paul Hohler, Richard Lebed. On the Existence of Heavy Pentaquarks. Physical Review D (2005).
  • Thomas Cohen, Richard Lebed. Phenomenology of the Baryon Resonance 70-plet at Large N_c. Physical Review D (2005).
  • Thomas Cohen, Richard Lebed. SU(3) Baryon Resonance Multiplets in Large N_c QCD. Physics Letters B (2005).
  • Goity, J L, Lebed, Richard, Pich, A, Schat, C L, Scoccola, N N. Large N_c QCD 2004. (2005).
  • Lebed, Richard. Baryon Resonances in the 1/N_c Expansion. World Scientific (2005).
  • Richard Lebed, Daniel Martin. Complete Analysis of Baryon Magnetic Moments in 1/N_c. Physical Review D (2004).
  • Richard Lebed, Daniel Martin. Constraints on Natural Maki-Nakagawa-Sakata Parameters from |U_{e3}|. Physical Review D (2004).
  • Richard Lebed, Daniel Martin. Hyperon Radiative Decays in the 1/N_c Expansion. Physical Review D (2004).
  • Thomas Cohen, Daniel Dakin, Abhinav Nellore, Richard Lebed. Excited Baryon Widths in Large N_c QCD. Physical Review D (2004).
  • Thomas Cohen, Daniel Dakin, Abhinav Nellore, Richard Lebed. Pion-Nucleon Scattering Relations at Next-to-Leading Order in 1/N_c. Physical Review D (2004).
  • Thomas Cohen, Richard Lebed. Partners of the Theta^+ in Large N_c QCD. Physics Letters B (2004).
  • Thomas Cohen, Richard Lebed. SU(3) Clebsch-Gordan Coefficients for Baryon-Meson Coupling at Arbitrary N_c. Physical Review D (2004).
  • Lebed, Richard. Baryons, INc. World Scientific (2004).
  • Alfons Buchmann, Richard Lebed. Baryon Charge Radii and Quadrupole Moments in the 1/N_c Expansion: The Three-Flavor Case. Physical Review D (2003).
  • Thomas Cohen, Richard Lebed. Compatibility of Quark and Resonant Picture Excited Baryon Multiplets in 1/N_c QCD. Physical Review D (2003).
  • Thomas Cohen, Richard Lebed. Excited Baryons in Large N_c QCD Revisited: The Resonance Picture Versus Single-Quark Excitations. Physical Review D (2003).
  • Thomas Cohen, Richard Lebed. New Relations for Excited Baryons in Large N_c QCD. Physical Review Letters (2003).
  • Lebed, Richard. N* Properties from the 1/Nc expansion. World Scientific (2003).
  • Richard Lebed, Alfons Buchmann, Janice Hester. Quadrupole Moments of the N and Delta in the 1/N_c Expansion. Physical Review D (2002).
  • Richard Lebed, Carl Carlson, Christopher Carone. Supersymmetric Noncommutative QED and Lorentz Violation. Physics Letters B (2002).
  • Lebed, Richard. Phenomenology of Large N_c QCD. (2002).
  • Richard Lebed. The Counting of Generalized Polarizabilities. Physical Review D (2001).
  • Richard Lebed, Carl Carlson, Christopher Carone. Bounding Noncommutative QCD. Physics Letters B (2001).
  • Richard Lebed, Xiangdong Ji. Counting Form Factors of Twist-Two Operators. Physical Review D (2001).
  • Lebed, Richard, Aranda, Alfredo, Carone, Christopher. A Lot of Flavor Physics from a Little Symmetry. World Scientific (2001).
  • Richard Lebed. Radiative Weak Annihilation Decays. Physical Review D (2000).
  • Richard Lebed, Alfons Buchmann. Large Nc, Constituent Quarks, and N and Delta Charge Radii. Physical Review D (2000).
  • Richard Lebed, Alfredo Aranda, Christopher Carone. Maximal Neutrino Mixing from a Minimal Flavor Symmetry. Physical Review D (2000).
  • Richard Lebed, Alfredo Aranda, Christopher Carone. U(2) Flavor Physics without U(2) Symmetry. Physics Letters B (2000).
  • Richard Lebed, Elizabeth Jenkins. Naturalness of the Coleman-Glashow Mass Relation in the 1/Nc Expansion: an Update. Physical Review D (2000).
  • Richard Lebed, Nikolai Uraltsev. Precision Studies of Duality in the 't Hooft Model. Physical Review D (2000).
  • Lebed, Richard. QCD Constraints on Form Factor Shapes. World Scientific (2000).

Courses

Fall 2018
Course Number Course Title
PHY 314 Quantum Physics I
PHY 493 Honors Thesis
PHY 495 Project Research
PHY 499 Individualized Instruction
PHY 792 Research
Spring 2018
Course Number Course Title
PHY 462 Particle and Nuclear Physics
PHY 492 Honors Directed Study
PHY 495 Project Research
PHY 499 Individualized Instruction
PHY 792 Research
PHY 799 Dissertation
Fall 2017
Course Number Course Title
PHY 314 Quantum Physics I
PHY 495 Project Research
PHY 499 Individualized Instruction
PHY 792 Research
PHY 799 Dissertation
Spring 2017
Course Number Course Title
PHY 462 Particle and Nuclear Physics
PHY 493 Honors Thesis
PHY 495 Project Research
PHY 499 Individualized Instruction
PHY 792 Research
PHY 799 Dissertation
Fall 2016
Course Number Course Title
PHY 314 Quantum Physics I
PHY 495 Project Research
PHY 499 Individualized Instruction
PHY 792 Research
PHY 799 Dissertation
Spring 2016
Course Number Course Title
PHY 493 Honors Thesis
PHY 495 Project Research
PHY 499 Individualized Instruction
PHY 792 Research
PHY 799 Dissertation
Fall 2015
Course Number Course Title
PHY 495 Project Research
PHY 499 Individualized Instruction
PHY 792 Research
PHY 799 Dissertation
Spring 2015
Course Number Course Title
PHY 462 Particle and Nuclear Physics
PHY 493 Honors Thesis
PHY 495 Project Research
PHY 499 Individualized Instruction
PHY 792 Research
PHY 799 Dissertation
Fall 2014
Course Number Course Title
PHY 314 Quantum Physics I
PHY 492 Honors Directed Study
PHY 495 Project Research
PHY 499 Individualized Instruction
PHY 792 Research
Spring 2014
Course Number Course Title
PHY 462 Particle and Nuclear Physics
PHY 495 Project Research
PHY 499 Individualized Instruction
PHY 792 Research
PHY 799 Dissertation