Theoretical Particle Physics

marcela

​Marcela Carena

Ph.D., University of Hamburg, 1989.
Scientist, Fermi National Accelerator Laboratory, Professor (part-time), Enrico Fermi Institute and Dept. of Physics.
Theoretical physics, elementary particles.

Professor Carena does theoretical research on collider phenomenology, detection of Higgs fields, supersymmetry, electroweak baryogenesis, dark matter, and extra dimensions.

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Updated 6/2008

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Peter Freund

​Peter G.O. Freund

Ph.D., Vienna, 1960.
Professor Emeritus, Dept. of Physics, Enrico Fermi Institute, and the College.
Theoretical physics, particle physics, field theory.

From my work on the number-theoretic features of string theory connected with the algebraic geometry of the strings' world-sheets, I have been led to the study of certain two-dimensional integrable models which exhibit similar number-theoretic features. This has yielded new results on scattering processes in two-dimensional integrable quantum field theories. It has long been known that in such theories there is no particle production and the scattering of two particles determines the scattering of three or more particles. In a very large class of such theories, it turns out that even the input two-particle scattering is determined by simple considerations of quantum-geometry.

Geometries involving direct products of 4-dimensional anti-de Sitter (AdS) space with a 7-dimensional compact Einstein manifold, and of 7-dimensional AdS space with a 4-dimensional compact Einstein manifold which have appeared in the context of solutions of 11-dimensional supergravity found with M. Rubin, have recently been connected by Maldacena with conformal field theory in 3 and 6 dimensions. For certain cases this connection (and similar connections in other dimensions) have been studied in quite some detail by many authors. I am considering certain solutions of this type involving minimal supersymmetry or no supersymmetry at all.

We have constructed gravitational analogs of Born's nonlinear electrodynamics. In a very different vein we studied the implications of discrete scale invariance in certain rupture phenomena such as stock market crashes.

Selected Publications:

  • Dynamics of Dimensional Reduction. P.G.O. Freund and M. Rubin. Phys. Lett. B 97, 233, 1980.
  • Superstrings from 26 Dimensions? P.G.O. Freund. Phys. Lett. B 151, 387, 1985.
  • p-adic Numbers in Physics. L. Brekke and P.G.O. Freund. Phys. Reports 233, 1, 1993.
  • The Spectral Problem for the q-Knizhnik-Zamolodchikov Equation and Continuous q-Jacobi Polynomials. P.G.O. Freund. Comm. Math. Phys. 173, 17, 1995.
  • Discrete Scale Invariance in Stock Markets Before Crashes. J.A. Feigenbaum and P.G.O. Freund. Int. J. Modern Phys. 10, 3737, 1996.
  • Gravitational Analogs of Nonlinear Born Electrodynamics. J.A. Feigenbaum, P.G.O. Freund and M. Pigli. Phys. Rev. D 57, 4738, 1998.

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Updated 2/2011

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Jeffrey Harvey ​Jeffrey Harvey

Ph.D., Cal. Tech., 1981
Enrico Fermi Distinguished Service Professor, Dept. of Physics, Enrico Fermi Institute, and the College.
Theoretical physics, particle physics, quantum field theory, superstring theory.
Jeffrey Harvey's homepage

Much of the success of particle physics is based on situations where there is a small parameter (such as the fine structure constant in QED) and quantities of physical interest can be expanded in a perturbative series in terms of this small parameter. However there are many interesting problems for which this is not the case. These include confinement and chiral symmetry breaking in QCD and probably the questions of supersymmetry breaking and the choice of vacuum in string theory. There has been recent progress in these "non-perturbative" problems by using ideas based on supersymmetry and duality. Duality often allows one to reformulate non-perturbative questions in terms of a dual, weakly coupled description.

My current research focuses on using ideas of string duality to study the structure of QCD, the theory of the strong interactions. I am particularly interested in the structure of chiral symmetry breaking and the restoration of chiral symmetry at finite temperature and its possible experimental manifestations at the Relativistic Heavy Ion Collider.

I am also interested in many other topics in particle physics, cosmology and string theory. These include the structure of solitons such as magnetic monopoles, the development of techniques for better understanding M theory, the uses of anomalies in field theory and string theory, and the possibility of a non-commutative structure to spacetime at small distance scales.

Selected Publications:

  • Chiral Symmetry Breaking from Intersecting D-Branes. E. Antonyan, J.A. Harvey, D. Kutasov . EFI-06-18, Aug 2006. 29 pp. ** Temporary entry ** e-Print Archive: hep-th/0608177.
  • The Gross-Neveu Model from String Theory. E. Antonyan, J.A. Harvey, D. Kutasov . EFI-06-11, Aug 2006. 32 pp. ** Temporary entry ** e-Print Archive: hep-th/0608149.
  • NJL and QCD from string theory. E. Antonyan, J.A. Harvey, S. Jensen, D. Kutasov (Chicago U., EFI & Chicago U.) . EFI-06-05, Apr 2006. 31 pp. e-Print Archive: hep-th/0604017.
  • The M2-M5 brane system and a generalized Nahm's equation. Anirban Basu, Jeffrey A. Harvey (Chicago U., EFI & Chicago U.) . EFI-04-41, Dec 2004. 18 pp. Published in Nucl. Phys. B 713:136-150 (2005); e-Print Archive: hep-th/0412310.
  • Noncommutative field theory and Lorentz violation. Sean M. Carroll, Jeffrey A. Harvey (Chicago U., EFI) , V.Alan Kostelecky (Indiana U.) , Charles D. Lane (Colby Coll.) , Takemi Okamoto (Chicago U., EFI) . EFI-01-12, IUHET-433, May 2001. 4pp. Published in Phys. Rev. Lett. 87:141601 (2001); e-Print Archive: hep-th/0105082.
  • Komaba lectures on noncommutative solitons and D-branes. Jeffrey A. Harvey (Chicago U., EFI & Chicago U.). EFI-01-05, Feb 2001. 43 pp. Lectures presented at Komaba 2000 Workshop: Non-perturbative Dynamics in String Theory, Komaba, Japan, 14-16 Nov 2000. e-Print Archive: hep-th/0102076.

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Updated 8/2006

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richard

Richard Hill

Ph.D., Cornell University, 2002.
Asst. Prof., Dept. of Physics, Enrico Fermi Institute, and the College.
Theoretical physics, elementary particles.
Richard Hill's website

I study theoretical elementary particle physics. My research is focused on aspects of quantum field theory that impact particle physics phenomenology. These include effective field theories; models of physics beyond the standard model; quark and lepton flavor physics, and connections to astrophysics and cosmology.

Selected Publications:

  • Weakly Interacting Stable Pions, (with Y. Bai), arXiv:1005.0008.
  • Anomaly mediated neutrino-photon interactions at finite baryon density, (with J. Harvey and C. Hill), Phys. Rev. Lett. 99:261601, 2007, arXiv:0708.1281.
  • T-parity violation by anomalies, (with C. Hill) Phys. Rev. D76:115014, 2007, arXiv:0705.0697.
  • Comment on form-factor shape and extraction of |V(ub)| from B ---> pi | nu, (with T. Becher) Phys. Lett. B 633:61-69, 2009, hep-ph/0509090.
  • Spectator interactions in soft collinear effective theory, (with M. Neubert) Nucl. Phys. B 657:229-256, 2003, hep-ph/0211018.
  • New value of m(muon) / m(e) from muonium hyperfine splitting. Phys. Rev. Lett. 86:3280-3283, 2001, hep-ph/0010130.

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Updated 6/2010

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David Kutasov ​David Kutasov

Ph.D., Weizmann Institute, Israel, 1989.
Professor, Dept. of Physics, Enrico Fermi Institute, and the College.
Theoretical physics, quantum field theory, string theory.

My main research focus in recent years was on a number of questions in field and string theory. One is the dynamics of strongly coupled field theories such as Quantum Chromodynamics, and in particular qualitative phenomena such as confinement and chiral symmetry breaking. Another is supersymmetry breaking in stable and metastable vacua, and the associated question of vacuum selection in the early universe (why may the universe end up in a non-supersymmetric metastable state, when there are stable supersymmetric ones). String theory appears to be a very fruitful source of ideas for tackling these problems, and I have been involved in exploring them.

Some other topics in string theory I have been studying are the evolution of black holes into highly excited strings as their mass decreases, the physics associated with cosmological singularities such as the big bang, the study of time dependent backgrounds that involve branes accelerating in an external gravitational field, holography in different types of backgrounds, infrared instabilities, and low dimensional toy models of string theory.

Generally speaking, I am interested in developing better tools for analyzing the consequences of string theory in various situations, which seems to be the main obstacle for making predictions about nature. I am also interested in using the dynamical mechanisms that were discovered in string and field theory in recent years to explain potential new results in particle physics experiments and cosmology.

Selected Publications:

  • "Some Exact Results on Tachyon Condensation in String Field Theory'', D. Kutasov, M. Marino and G. Moore, hep-th/0009148, JHEP 0010 (2000) 045.
  • "String propagation in the presence of cosmological singularities", B. Craps, D. Kutasov and G. Rajesh, JHEP 0206, 053 (2002); [arXiv:hep-th/0205101].
  • "A New Hat For The c=1 Matrix Model", M. R. Douglas, I. R. Klebanov, D. Kutasov, J. Maldacena, E. Martinec, N. Seiberg, hep-th/0307195.
  • "Central charges and U(1)R symmetries in N = 1 super Yang-Mills", D. Kutasov, A. Parnachev and D. A. Sahakyan, JHEP 0311, 013 (2003); [arXiv:hep-th/0308071].
  • "D-Brane Dynamics Near NS5-Branes", D. Kutasov, hep-th/0405058.
  • "NJL and QCD from String Theory", E. Antonyan, J.A. Harvey, S. Jensen, D. Kutasov, hep-th/0604017.
  • "Gauge symmetry and supersymmetry breaking from intersecting branes", A. Giveon and D. Kutasov, Nucl. Phys. B778, 129 (2007) [arXiv:hep-th/0703135].
  • "Seiberg Duality in Chern-Simons Theory", A. Giveon and D. Kutasov, Nucl. Phys. B812, 1 (2009); [arXiv:0808.0360 [hep-th]].
  • "D-Terms and Supersymmetry Breaking from Branes", A. Giveon, D. Kutasov, J. McOrist and A. B. Royston, Nucl. Phys. B822, 106 (2009); [arXiv:0904.0459 [hep-th]].
  • "Dynamical Vacuum Selection in String Theory", D.Kutasov, O.Lunin, J.McOrist and A. B. Royston, Nucl. Phys. B833, 64 (2010); [arXiv:0909.3319 [hep-th]].

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Updated 2/2011

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Emil Martinec ​Emil J. Martinec

Ph.D., Cornell, 1984.
Professor, Dept. of Physics, Enrico Fermi Institute, and the College, and Director, Enrico Fermi Institute.
Theoretical physics, string theory, quantum field theory, elementary particles.
Emil J. Martinec's homepage

My work aims at uncovering the structural foundations of string theory (now often called M-theory), which attempts to unify the basic forces. The theoretical underpinnings of the subject are finally taking shape, due to the discovery of nonperturbative dualities between different descriptions of the theory. The spacetime manifold on which particles and waves propagate is being replaced by a more "stringy" notion of geometry at short distances and/or in strong fields.

One issue of interest to me is how string theory incorporates black holes as quantum states. This problem has turned out to be a rather sensitive probe of the theory, and will likely lead us to new notions of space, time, and dynamics. Cosmology also requires an understanding of the resolution of gravitational singularities, and I am investigating whether techniques used in the resolution of black hole singularities can be applied there.

Selected Publications:

  • Black Holes and the Phases of Brane Thermodynamics. Lectures given at NATO Advanced Study Institute: TMR Summer School on Progress in String Theory and M-Theory (Cargese 99), Cargese, Corsica, France, 24 May - 5 Jun 1999. Published in *Cargese 1999, Progress in string theory and M-theory* 117-145. e-Print Archive hep-th/9909049.
  • Defects, decay, and dissipated states. Lectures given at NATO Advanced Study Institute and EC Summer School on Progress in String, Field and Particle Theory, Cargese, Corsica, France, 25 Jun - 11 Jul 2002. Published in *Cargese 2002, Progress in string, field and particle theory* 225-262 e-Print Archive: hep-th/0210231.
  • Closed string tachyon condensation and world sheet inflation. Bruno Carneiro Da Cunha, Emil J. Martinec. Published in Phys.Rev.D 68 063502 (2003). e-Print Archive: hep-th/0303087.
  • A New hat for the c=1 matrix model. M.R. Douglas, I.R. Klebanov, D. Kutasov, J. Maldacena, E. Martinec, N. Seiberg. In *Shifman, M. (ed.) et al.: From fields to strings, vol. 3* 1758-1827. e-Print Archive: hep-th/0307195.
  • Toward the end of time. Emil J. Martinec, Daniel Robbins, Savdeep Sethi; e-Print Archive: hep-th/0603104.

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Updated 8/2006

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Yoichiro Nambu ​Yoichiro Nambu

Sc.D., Tokyo, Japan, 1952.
Harry Pratt Judson Distinguished Service Professor Emeritus, Dept. of Physics and Enrico Fermi Institute.
Theoretical physics, particle physics, field theory.

Recently I have been working on a reformulation of fluid dynamics, motivated by an analogy to string theory, as a mapping of n-dimensional space to n-dimensional space. Incompressible nonrelativistic fluids are considered as volume-preserving mapping. It is found that the multi-Hamiltonian dynamics, which I proposed in 1973, naturally emerges for n>2, but the case of n = 2 yields the most interesting results. An intriguing question is quantization, which can be considered either in the usual sense or in a speculative sense of space quantization, i.e., non-commuting space coordinates. (To be published.)

Selected Publications:

  • Energy Gap, Mass Gap, and Spontaneous Symmetry Breaking, in BCS50, World Scientific, 2010.
  • Nobel Lecture 2008, Nobel Foundation
  • Spontaneous Symmetry Breaking in Particle Physics, Rev. Mod. Phys., 1015 (2009).
  • Some Anomalies Related to Spontaneous Symmetry Breaking, Proceedings of CPT04, Indiana University, (World Scientific, 2005), p.1.
  • Spontaneous Breaking of Lie and Current Algebras, J. Stat. Phys. 115 (2004) 7.
  • Aharonov-Bohm Problem Revisited, Nucl. Phys. B 579 (2000) 590. CPT, SSB, Ether, and All THAT, Proceedings of CPT01, Indiana University, (World Scientific, 2002), p.1.
  • Symmetry Breaking, Chiral Dynamics, and Fermion Masses, Nuc. Phys. A 629 (1998) 3c.
  • Fermion-Boson Relations in BCS Type Theories, Physica D 15, 173 (1985).
  • A Dynamical Model of Elementary Particles based on an Analogy with Superconductivity I, (with G. Jona-Lasinio), Phys. Rev. 122, 345 (1961).

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Updated 2/2011

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Jonathan Rosner ​Jonathan L. Rosner

Ph.D., Princeton, 1965.
Professor Emeritus, Dept. of Physics, Enrico Fermi Institute, and the College.
Theoretical physics, particle physics, field theory.
Jonathan Rosner's homepage

Recent experiments at Fermilab and CERN and some non-accelerator experiments (including measurements of parity violation in atoms) have permitted tests of the theory of electroweak interactions with unprecedented accuracy. Rosner investigates how these experiments shed light on new physics in the mass range of 100 GeV to several TeV.

A parallel line of investigation deals with the weak couplings of quarks to one another, as parametrized by the Cabibbo-Kobayashi-Maskawa (CKM) matrix. Various ways of learning these couplings more precisely are being studied. A key role is played by experiments on decays of mesons containing the "charm" and "bottom" (or "beauty") quarks. Present data on the violation of CP symmetry (the combination of charge and space inversion) in decays of these mesons are used to sharpen information on magnitudes and phases of CKM matrix elements and to search for new physics if and when inconsistencies are encountered.

Other topics being investigated include properties of systems involving one or more charm and bottom quarks, the nature of dark matter, the possibility that quarks and leptons have a composite structure, the role of neutrino masses in understanding fermion masses and couplings, the possibility of detecting new quarks and leptons with unusual quantum numbers as predicted in certain unified theories of the electroweak and strong interactions, and the experimental signatures of gauge theories beyond the standard SU(3) X SU(2) X U(1) electroweak-strong theory.

Rosner has performed an experiment to search for and study radio-frequency (RF) pulses accompanying cosmic ray air showers. Since 2003 he has been a member of the CLEO Collaboration studying electron-positron collisions at Cornell, with particular focus on the spectroscopy of heavy charm-anticharm and bottom-antibottom mesons. As of 2011 he has become Vice-Chair of the Division of Particles and Fields (DPF) of the American Physical Society and will share responsibility for DPF activities (meetings, long-range planning, etc.) with other officers of the Division.

Selected Publications:

  • Observation of the hc(1P1) State of Charmonium, J. L. Rosner et al. [CLEO Collaboration], Cornell University Report No. CLNS-05-1919, CLEO-05-11, arXiv: hep-ex/0505073, Phys. Rev. Lett. 95, 102003 (2005).
  • The quark model and b baryons, Marek Karliner, Boaz Keren-Zur, Harry J. Lipkin, and Jonathan L. Rosner, arXiv:0804.1575 [hep-ph], Annals of Physics 324, 2--15 (2009).
  • Flavor questions for the LHC, presented at Flavor Physics and CP Violation 2009, Lake Placid, New York, May 28 -- June 1, 2009, arXiv:0907.2414 [hep-ph], Proceedings of Science (PoS) FPCP2009, 051.
  • Higher-order multipole amplitudes in charmonium radiative transitions M. Artuso et al. [CLEO Collaboration], arXiv:0910.0046 [hep-ex], Phys. Rev. D 80, 112003 (2009).
  • Background check for anomalous like-sign dimuon charge asymmetry, Michael Gronau and Jonathan L. Rosner, arXiv:1007:4728 [hep-ph], Phys. Rev. D 82, 077301 (Brief Reports) (2010).
  • Relative phases in Dalitz plot amplitudes for D0 => KS pi+ pi- and D0 => pi0 K+ K-, Bhubanjyoti Bhattacharya and Jonathan L. Rosner, arXiv:1008.4083 [hep-ph], Phys. Rev. D 82, 074025 (2010).
  • Measurements of branching fractions for electromagnetic transitions in bottomonium involving the chibJ(1P) states, M. Kornicer et al. [CLEO Collaboration], arXiv:1012.0589 [hep-ex], to be published in Phys. Rev. D.

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Updated 2/2011

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Savdeep Sethi ​Savdeep S. Sethi

Ph.D., Harvard, 1996.
Professor, Dept. of Physics, Enrico Fermi Institute, and the College.
Theoretical physics, quantum field theory, string theory, particle physics.
Savdeep Sethi's homepage

To answer basic questions about the nature of space and time and the origin of the universe, we require a quantum theory of gravity. The most promising candidate for such a theory is string theory which attempts to unify all the forces of nature in a single consistent framework. String has grown much richer over the past few years, and is no longer simply a theory of weakly interacting strings. Rather it contains membranes and other higher-dimensional objects which all appear to originate from a unique eleven-dimensional theory known as M-theory. Uncovering the structure of M-theory is very likely to radically change our understanding of space, time and gravity.

My research centers on understanding various aspects of M-theory, string theory and field theory. Specifically, my recent work has focused on constructing models of the Big Bang where the physics near the Big Bang is actually under control via the use of holography. In such models, gravity and space-time are emergent phenomena. In addition to this area, I have long standing interests in string compactifications like those that involve fluxes or novel vacua that involve triples of commuting connections, and in supersymmetric field theory.

Selected Publications:

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Updated 8/2006

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son Dam T. Son

Ph.D., Institute for Nuclear Research - Moscow, 1995.
University Prof., Dept. Physics, Enrico Fermi Institute, James Franck Inst., and the College.
Theoretical physics

I have a broad research program encompassing several areas of theoretical physics.

String Theory: applications of gauge-gravity duality in the physics of the quark-gluon plasma and other strongly interacting systems.

Nuclear Physics: properties of the hot and dense states of matter, e.g., the quark gluon plasma and dense quark matter (color superconductors).

Condensed matter physics: physics of the quantum Hall system, graphene; applications of quantum field theory.

Atomic physics: many-body physics of cold trapped atoms, BCS-BEC crossover, applications of quantum field theoretical techniques.

Selected Publications:

  • R. Baier, A.H. Mueller, D. Schiff, and D.T. Son, "Bottom-up" thermalization in heavy ion collisions, Phys. Lett. B 502, 51 (2001).
  • P. Kovtun, D.T. Son, and A.O. Starinets, Viscosity in Strongly Interacting Quantum Field Theories from Black Hole Physics, Phys. Rev. Lett. 94, 111601 (2005).
  • Y. Nishida and D.T. Son, Epsilon Expansion for a Fermi Gas at Infinite Scattering Length, Phys. Rev. Lett. 97, 050403 (2006).
  • C. Hoyos and D.T. Son, Hall Viscosity and Electromagnetic Response, Phys. Rev. Lett. 108, 066805 (2012).

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Updated 10/2012

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Carlos ​Carlos E. M. Wagner

Ph.D., University of Hamburg, 1989.
Physicist, High Energy Physics, Argonne National Lab.; Professor (half-time), Dept. of Physics, Enrico Fermi Institute,and Kavli Institute for Cosmologial Physics.
Theoretical physics, elementary particles, beyond the Standard Model theories.
Carlos Wagner's homepage

Among the most relevant open questions in particle physics are the ones related to the origin of mass and to the existence of matter in the Universe. The answer to the first question relies on the mechanism of electroweak symmetry breaking, which can be tested through the corresponding Higgs physics at high energy collider facilities. The answer to the second question is more difficult, since the understanding of the origin of ordinary matter, the building blocks of atoms, and of dark matter, visible only via its gravitational interactions, demands new physics, beyond the current Standard Model description. One ambitious goal would be to find a scenario that led to an answer to all these questions in a natural way. Some well motivated extensions of the Standard Model seem to provide the best framework to achieve such a goal. For these reasons, my research activities focus on such extensions, like Supersymmetry or Extra Dimensions, putting emphasis on Higgs physics, Dark Matter and Baryogenesis, and on the possible experimental tests of these theories at hadron colliders as well as on dedicated dark matter and flavor physics experiments. I also concentrate on possible explanations of experimental signatures that may indicate a deviation from the Standard Model description of particle interactions and which may reveal the real nature of physics at the weak scale.

Selected Recent Publications:

  • Electroweak baryogenesis and dark matter in the nMSSM, A. Menon, D.E. Morrissey and C.E.M. Wagner, Phys. Rev.D 70:035005, 2004.
  • The Supersymmetric Origin of Matter, M. Carena, C. Balazs, A. Menon, D. Morrissey and C.E.M. Wagner, Phys. Rev. D 71:075002, 2005.
  • Constraints on B and Higgs physics in minimal low energy supersymmetric models, M.S. Carena, A.Menon, R. Noriega-Papaqui, A.Szynkman and C.E.M.Wagner, Phys. Rev. D 74: 015009, 2006
  • Electroweak constraints on warped models with custodial symmetry, M.S. Carena, E. Ponton, J. Santiago and C.E.M. Wagner, Phys. Rev. D 76:035006, 2007
  • Gauge-Higgs Unification and Radiative Electroweak Symmetry Breaking in Warped Extra Dimensions, A.D. Medina, N.R. Shah and C.E.M. Wagner, Phys. Rev. D 76:095010, 2007
  • The Baryogenesis Window in the MSSM, M. Carena, G. Nardini, M. Quiros and C.E.M. Wagner, Nucl. Phys. B 812, 243 (2009)
  • Prospects for Higgs Searches at the Tevatron and LHC in the MSSM with Explicit CP-violation, P. Draper, T. Liu and C.E.M. Wagner, Phys. Rev. D 81:015014, 2010
  • Forward-Backward Asymmetry of Top Quark Pair Production, Q.H.M. Cao, D. McKeen, J.L.Rosner, G. Shaughnessy and C.E.M. Wagner, Phys. Rev. D 81:114004, 2010
  • Dark Light Higgs, P. Draper, T. Liu, C.E.M. Wagner, L.T.M. Wang and H. Zhang, arXiv:1009.3963 [hep-ph], Phys. Rev. Lett. in press
  • SUSY-Breaking Parameters from RG Invariants at the LHC, M. Carena, P. Draper, N.R. Shah and C.E.M. Wagner, Phys. Rev. D 83:035014 (2011)

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Updated 3/2011

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liantao ​LianTao Wang

Ph.D., University of Michigan, 2002.
Assoc. Prof., Dept. of Physics, Enrico Fermi Institute, and the College.
Theoretical physics, elementary particles.
LianTao Wang's homepage

My research is in the area of particle physics phenomenology. I work on models of TeV new physics beyond the Standard Model and their experimental signals. The focus of my current research effort is on signals of new physics at the Tevatron and the Large Hadron Collider. I have worked on models and phenomenology of supersymmetry, warped extra-dimension (Randall-Sundrum), composite Higgs, and so on. I am interested in methods of discovering and measuriing the properties of new physics particles.

I am also working on possible models of the cold dark matter in the universe and their experimental signals. Interesting data are expected in the near future, from a variety of experimental searches.

Selected Publications:

  • On the Feasibility and Utility of ISR Tagging, David Krohn, Lisa Randall, Lian-Tao Wang. Jan 2011. e-Print: arXiv:1101.0810 [hep-ph]
  • Dark Light Higgs, Patrick Draper, Tao Liu, Carlos E.M. Wagner, Lian-Tao Wang, Hao Zhang. ANL-HEP-PR-10-48, EFI-10-22. Sep 2010. 4 pp. e-Print: arXiv:1009.3963 [hep-ph]
  • Searching for the light dark gauge boson in GeV-scale experiments, M. Reece and L. T. Wang, JHEP 0907, 051 (2009), [arXiv:0904.1743 [hep-ph]].
  • Non-Abelian Dark Sectors and Their Collider Signatures, M. Baumgart, C. Cheung, J. T. Ruderman, L. T. Wang and I. Yavin, JHEP 0904, 014 (2009), [arXiv:0901.0283 [hep-ph].
  • Strategies to Identify Boosted Tops, J. Thaler and L. T. Wang, JHEP 0807, 092 (2008) [arXiv:0806.0023 [hep-ph].

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Updated 1/2011

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