Thomas C. Mehen
Professor of Physics
Prof.~Thomas Mehen works primarily on Quantum Chromodynamics (QCD) and the application of effective field theory (EFT) to problems in hadronic physics. EFTs rely on three key ideas: i) identifying the relevant degrees of freedom for a specific physical process; ii) using symmetries of QCD to simplify or constrain the form of interactions; and iii) finding small parameters, either small coupling constants or ratios of disparate mass scales, which can be used to formulate systematic perturbative calculations of observables.
Much of Mehen's research involves hadrons containing one or more heavy quarks. A long standing problem in QCD is understanding the production mechanism of heavy quarkonium (bound states of heavy quarks and antiquarks) in collider experiments. Mehen has worked on this problem throughout his career. Recently he and his collaborators proposed new tests of quarkonium production theory involving quarkonium produced within jets which motivated experimental measurements by colleagues at the Large Hadron Collider (LHC). Another important area of research is exotic quarkonium. Since 2003, particle and nuclear physics experiments around the world have discovered dozens of unusual particles that do not fit in to the conventional picture of quarkonium as a nonrelativistic bound state of heavy quark and antiquark. Some of these socalled XYZ mesons are thought to be molecular bound states of heavy mesons. Mehen has invented EFTs for these particles that are widely used to predict the properties of these mesons and interpret experimental data.
Mehen played a role in developing the Soft Collinear Effective Theory (SCET) which is an EFT suitable for processes in which there are one or more highly energetic quarks or gluons. This theory is now widely used in the study of energetic jets of particles produced at the LHC and other collider experiments. Mehen has been a leader in applying SCET to quarkonium production in colliders. He is also an expert on EFTs for strongly interacting systems with shallow twobody bound states and/or large scattering lengths, and has applied these EFTs to a wide variety of physical systems: low energy two and threebody nuclear physics, the XYZ mesons, cold trapped atoms, and strongly interacting nuclei embedded in a QED plasma, which is potentially relevant for astrophysics and cosmology. In his research, Mehen frequently applies heavy hadron chiral perturbation theory (HH$\chi$PT), which combines the heavy quark and chiral symmetries of QCD and is used to study the low energy behavior of heavy hadrons. Mehen and his student invented a version of HH$\chi$PT suitable for baryons and tetraquarks with two heavy quarks for the purpose of studying the doubly charm baryon recently discovered at the LHC and related states.
Some Prof. Mehen's work crosses over into other areas of physics. For example, techniques developed for nuclear physics have been used to calculate threebody corrections to the energy density of a BoseEinstein condensate whose atoms have large scattering lengths. Prof. Mehen has also worked on novel field theories which arise from unusual limits of string theory. Examples include noncommutative field theories and theories of tachyonic modes on nonBPS branes.
Current Appointments & Affiliations
 Professor of Physics, Physics, Trinity College of Arts & Sciences 2016
Contact Information
 249 Physics Bldg, Durham, NC 27708
 Box 90305, Durham, NC 277080305
 mehen@phy.duke.edu (919) 6602555
 http://www.phy.duke.edu/~mehen
 Background

Education, Training, & Certifications
 M.A., Johns Hopkins University 1997
 Ph.D., Johns Hopkins University 1997
 B.S., University of Virginia 1992

Duke Appointment History
 Associate Professor of Physics, Physics, Trinity College of Arts & Sciences 2009  2016
 Assistant Professor of Physics, Physics, Trinity College of Arts & Sciences 2002  2008
 Recognition

Awards & Honors
 Research

Selected Grants
 Lattice and Effective Field Theory Studies of Quantum Chromodynamics awarded by Department of Energy 2005  2019
 Heavy Quarks, QCD, and Effective Field Theory awarded by Department of Energy 2005  2009
 Publications & Artistic Works

Selected Publications

Conference Papers
 Mehen, T. "New tests of NRQCD from Quarkonia within jets." January 1, 2015.

Journal Articles
 Hornig, A, Kang, D, Makris, Y, and Mehen, T. "Transverse vetoes with rapidity cutoff in SCET." Journal of High Energy Physics 2017, no. 12 (December 1, 2017). Full Text
 Mehen, T. "Implications of heavy quarkdiquark symmetry for excited doubly heavy baryons and tetraquarks." Physical Review D 96, no. 9 (November 28, 2017). Full Text
 Bain, R, Makris, Y, Mehen, T, Dai, L, and Leibovich, AK. "NRQCD Confronts LHCb Data on Quarkonium Production within Jets." Physical review letters 119, no. 3 (July 18, 2017): 032002. Full Text
 Yao, X, Mehen, T, and Müller, B. "Dynamical screening of resonant scattering and thermal nuclear scattering rate in a plasma." Physical Review D 95, no. 11 (June 2017). Full Text
 Bain, R, Makris, Y, and Mehen, T. "Transverse momentum dependent fragmenting jet functions with applications to quarkonium production." Journal of High Energy Physics 2016, no. 11 (November 2016). Full Text
 Yao, X, Mehen, T, and Müller, B. "An effective field theory approach to the stabilization of 8 Be in a QED plasma." Journal of Physics G: Nuclear and Particle Physics 43, no. 7 (July 1, 2016): 07LT0207LT02. Full Text
 Bain, R, Dai, L, Hornig, A, Leibovich, AK, Makris, Y, and Mehen, T. "Analytic and Monte Carlo studies of jets with heavy mesons and quarkonia." Journal of High Energy Physics 2016, no. 6 (June 2016). Full Text
 Hornig, A, Makris, Y, and Mehen, T. "Jet shapes in dijet events at the LHC in SCET." Journal of High Energy Physics 2016, no. 4 (April 2016): 141. Full Text
 Mehen, T. "Hadronic loops versus factorization in effective field theory calculations of." Physical Review D 92, no. 3 (August 2015). Full Text
 Baumgart, M, Leibovich, AK, Mehen, T, and Rothstein, IZ. "Probing quarkonium production mechanisms with jet substructure." Journal of High Energy Physics 2014, no. 11 (November 2014). Full Text
 Kim, C, Idilbi, A, Mehen, T, and Yoon, YW. "Production of stoponium at the LHC." Physical Review D 89, no. 7 (April 2014). Full Text
 Fleming, S, Leibovich, AK, Mehen, T, and Rothstein, IZ. "Anomalous dimensions of the double parton fragmentation functions." Physical Review D  Particles, Fields, Gravitation and Cosmology 87, no. 7 (2013). Full Text
 Mehen, T, and Powell, JW. "Line shapes in Υ(5S)→B(^{*})B ^{̄}(^{*})π with Z(10610) and Z(10650) using effective field theory." Physical Review D  Particles, Fields, Gravitation and Cosmology 88, no. 3 (2013). Full Text
 Fleming, S, Leibovich, AK, Mehen, T, and Rothstein, IZ. "Systematics of quarkonium production at the LHC and double parton fragmentation." Physical Review D  Particles, Fields, Gravitation and Cosmology 86, no. 9 (2012). Full Text
 Fleming, S, and Mehen, T. "The decay of the X(3872) into &chicJ and the Operator Product Expansion in XEFT." Phys.Rev. D85:014016 (2012). (Academic Article) Link to Item
 Fleming, S, and Mehen, T. "Decay of the X(3872) into χ _{cJ} and the operator product expansion in effective field theory." Physical Review D  Particles, Fields, Gravitation and Cosmology 85, no. 1 (2012). Full Text
 Mehen, T, and Yang, DL. "On the Role of Charmed Meson Loops in Charmonium Decays." Phys.Rev. D85:014002 (2012). (Academic Article) Link to Item
 Mehen, T, and Yang, DL. "The role of charmed meson loops in charmonium decays." Physical Review D  Particles, Fields, Gravitation and Cosmology 85, no. 1 (2012). Full Text
 Mehen, T, and Powell, JW. "Heavy quark symmetry predictions for weakly bound Bmeson molecules." Physical Review D  Particles, Fields, Gravitation and Cosmology 84, no. 11 (2011). Full Text
 Mehen, T, and Springer, R. "Radiative Decays of X(3872) → ψ(2S) γ and ψ(4040) → X(3872) γ in Effective Field Theory." Phys.Rev.D83:094009 (2011). (Academic Article) Link to Item
 Mehen, T, and Springer, R. "Radiative decays X(3872)→ψ(2S)γ and ψ(4040)→X(3872) γ in effective field theory." Physical Review D  Particles, Fields, Gravitation and Cosmology 83, no. 9 (2011). Full Text
 Braaten, E, Hammer, HW, and Mehen, T. "Scattering of an ultrasoft pion and the X(3872)." Physical Review D  Particles, Fields, Gravitation and Cosmology 82, no. 3 (2010). Full Text Open Access Copy
 Idilbi, A, Kim, C, and Mehen, T. "Pair production of coloroctet scalars at the LHC." Physical Review D  Particles, Fields, Gravitation and Cosmology 82, no. 7 (2010). Full Text Open Access Copy
 Kim, C, and Mehen, T. "Octetonium at the LHC." Nuclear Physics B  Proceedings Supplements 200202, no. 1 C (2010): 179182. Full Text
 Fleming, S, and Mehen, T. "X(3872) in effective field theory." AIP Conference Proceedings 1182 (2009): 491494. Full Text
 Idilbi, A, Kim, C, and Mehen, T. "Factorization and resummation for single coloroctet scalar production at the LHC." Physical Review D  Particles, Fields, Gravitation and Cosmology 79, no. 11 (2009). Full Text
 Kim, C, and Mehen, T. "Color octet scalar bound states at the LHC." Physical Review D  Particles, Fields, Gravitation and Cosmology 79, no. 3 (2009). Full Text
 Fleming, S, and Mehen, T. "Hadronic decays of the X(3872) to χcJ in effective field theory." Physical Review D  Particles, Fields, Gravitation and Cosmology 78, no. 9 (2008). Full Text
 Kim, C, Leibovich, AK, and Mehen, T. "Nonperturbative charming penguin contributions to isospin asymmetries in radiative B decays." Physical Review D  Particles, Fields, Gravitation and Cosmology 78, no. 5 (2008). Full Text
 Mehen, T. "Nonrelativistic conformal field theory and trapped atoms: Virial theorems and the stateoperator correspondence in three dimensions." Physical Review A  Atomic, Molecular, and Optical Physics 78, no. 1 (2008). Full Text
 Mehen, T. "Heavy quarkdiquark symmetry and &ChiPT for doubly heavy baryons." Chiral Dynamics 2006  Proceedings of the 5th International Workshop on Chiral Dynamics, Theory and Experiment, CD 2006 (December 1, 2007): 299301.
 Fleming, S, Kusunoki, M, Mehen, T, and Kolck, UV. "Pion interactions in the X(3872)." Physical Review D  Particles, Fields, Gravitation and Cosmology 76, no. 3 (2007). Full Text
 Idilbi, A, and Mehen, T. "On the equivalence of soft and zerobin subtractions." Physical Review D  Particles, Fields, Gravitation and Cosmology 75, no. 11 (2007). Full Text
 Idilbi, A, and Mehen, T. "Equivalence of soft and zerobin subtractions at two loops." Physical Review D  Particles, Fields, Gravitation and Cosmology 76, no. 9 (2007). Full Text
 Fleming, S, Leibovich, AK, and Mehen, T. "J/Ψ photoproduction at large z in soft collinear effective theory." Proceedings of the Ringberg Workshop on New Trends in HERA Physics 2005 (January 1, 2006): 239250.
 Fleming, S, Leibovich, AK, and Mehen, T. "Resummation of large endpoint corrections to coloroctet J/ψ photoproduction." Physical Review D  Particles, Fields, Gravitation and Cosmology 74, no. 11 (2006). Full Text
 Fleming, S, and Mehen, T. "Doubly heavy baryons, heavy quarkdiquark symmetry, and nonrelativistic QCD." Physical Review D  Particles, Fields, Gravitation and Cosmology 73, no. 3 (2006). Full Text
 Hu, J, and Mehen, T. "Chiral Lagrangian with heavy quarkdiquark symmetry." Physical Review D  Particles, Fields, Gravitation and Cosmology 73, no. 5 (2006). Full Text
 Leibovich, A, Fleming, S, and Mehen, T. "J/φ photoproduction at the endpoint." Annual Meeting of the Division of Particles and Fields of the American Physical Society, DPF 2006, and the Annual Fall Meeting of the Japan Particle Physics Community (January 1, 2006).
 Mehen, T, and Tiburzi, BC. "Doubly heavy baryons and quarkdiquark symmetry in quenched and partially quenched chiral perturbation theory." Physical Review D  Particles, Fields, Gravitation and Cosmology 74, no. 5 (2006). Full Text
 Mehen, T. "Heavy quarkdiquark symmetry and X PT for Doubly Heavy Baryons." Annual Meeting of the Division of Particles and Fields of the American Physical Society, DPF 2006, and the Annual Fall Meeting of the Japan Particle Physics Community (January 1, 2006).
 Mehen, T, and Springer, RP. "Even and OddParity Charmed Meson Masses in Heavy Hadron Chiral Perturbation Theory." Phys Rev D 72, no. 034006 (March 2005). (Academic Article)
 Mehen, T, and Springer, RP. "Even and oddparity charmed meson masses in heavy hadron chiral perturbation theory." Physical Review D  Particles, Fields, Gravitation and Cosmology 72, no. 3 (2005): 112. Full Text
 Mehen, T, and Tiburzi, BC. "Quarks with twisted boundary conditions in the epsilon regime." Physical Review D  Particles, Fields, Gravitation and Cosmology 72, no. 1 (2005): 19. Full Text
 Mehen, T. "Excited D_{s} (and pentaquarks) in chiral perturbation theory." Acta Physica Polonica B 36, no. 7 (2005): 23412350.
 Braaten, E, Kusunoki, M, Jia, Y, and Mehen, T. "Λ<inf>c</inf><sup>+</sup>/Λ<inf>c</inf><sup></sup> asymmetry in hadroproduction from heavyquark recombination." Physical Review D  Particles, Fields, Gravitation and Cosmology 70, no. 5 (2004): 05402110540215. Full Text
 Braaten, E, Kusunoki, M, Jia, Y, and Mehen, T. "$\Lambda_c^+/\Lambda^_c$ Asymmetry in Hadroproduction for HeavyQuark Recombination." Phys. Rev. D70, 054021 (2004). (Academic Article) Link to Item
 Braaten, E, Kusunoki, M, Jia, Y, and Mehen, T. "Λ_{c}^{+}/Λ_{c}^{} asymmetry in hadroproduction from heavyquark recombination." Physical Review D  Particles, Fields, Gravitation and Cosmology 70, no. 5 (2004): 05402110540215. Full Text
 Mehen, T, and Schat, C. "Determining pentaquark quantum numbers from strong decays." Physics Letters, Section B: Nuclear, Elementary Particle and HighEnergy Physics 588, no. 12 (2004): 6773. Full Text
 Mehen, T, and Springer, RP. "Heavyquark symmetry and the electromagnetic decays of excited charmed strange mesons." Physical Review D  Particles, Fields, Gravitation and Cosmology 70, no. 7 (January 1, 2004). Full Text
 Mehen, T, and Springer, RP. "Heavyquark symmetry and the electromagnetic decays of excited charmed strange mesons." Physical Review D  Particles, Fields, Gravitation and Cosmology 70, no. 7 (2004): 074014107401412. Full Text
 Mehen, T. "Recent developments in heavy quark and quarkonium production." Acta Physica Polonica B 35, no. 1 (2004): 121129.
 Mehen, T. "Charm production asymmetries from heavyquark recombination." Journal of Physics G: Nuclear and Particle Physics 30, no. 1 (2004): S295S304. Full Text
 Kaiser, R, Manohar, AV, and Mehen, T. "Isospin Violation in." Physical Review Letters 90, no. 14 (April 2003). Full Text
 Fleming, S, Leibovich, AK, and Mehen, T. "Resumming the coloroctet contribution to e^{+}e→J/ψ+X." Physical Review D 68, no. 9 (2003). Full Text
 Kaiser, R, Manohar, AV, and Mehen, T. "Isospin violation in e^{+}e^{} → BB̄." Physical Review Letters 90, no. 14 (2003): 142001/1142001/4.
 Mehen, T, and Wecht, B. "Gauge Fields and Scalars in Rolling Tachyon Backgrounds." JHEP 0302 (2003): 58. (Academic Article) Link to Item
 Mehen, T, and Wecht, B. "Gauge fields and scalars in rolling tachyon backgrounds." Journal of High Energy Physics 7, no. 2 (2003): 13131326.
 Braaten, E, Jia, Y, and Mehen, T. "Charmanticharm asymmetries in photoproduction from heavyquark recombination." Physical Review D 66, no. 1 (July 2002). Full Text
 Braaten, E, Hammer, HW, and Mehen, T. "Dilute BoseEinstein Condensate with Large Scattering Length." Physical Review Letters 88, no. 4 (January 2002). Full Text
 Braaten, E, Hammer, HW, and Mehen, T. "Dilute BoseEinstein condensate with large scattering length." Physical Review Letters 88, no. 4 (2002): 404011404014.
 Braaten, E, Jia, Y, and Mehen, T. "Charmanticharm asymmetries in photoproduction from heavyquark recombination." Physical Review D  Particles, Fields, Gravitation and Cosmology 66, no. 1 II (2002): 1400311400310.
 Braaten, E, Jia, Y, and Mehen, T. "Leadingparticle effect from heavyquark recombination." Physical Review Letters 89, no. 12 (2002): 12200211220024.
 Braaten, E, Yu, J, and Mehen, T. "B production asymmetries in perturbative QCD." Physical Review D 66, no. 3 (2002). Full Text
 Manohar, AV, Mehen, T, Pirjol, D, and Stewart, IW. "Reparameterization invariance for collinear operators." Physics Letters, Section B: Nuclear, Elementary Particle and HighEnergy Physics 539, no. 12 (2002): 5966. Full Text
 Hammer, HW, and Mehen, T. "A renormalized equation for the threebody system with shortrange interactions." Nuclear Physics A 690, no. 4 (2001): 535546. Full Text
 Hammer, HW, and Mehen, T. "Range corrections to doublet Swave neutrondeuteron scattering." Physics Letters, Section B: Nuclear, Elementary Particle and HighEnergy Physics 516, no. 34 (2001): 353361. Full Text
 Fleming, S, Mehen, T, and Stewart, IW. "NN scattering mixing angle at nexttonexttoleading order." Physical Review C 61, no. 4 (March 2000). Full Text
 Aharony, O, Gomis, J, and Mehen, T. "On Theories with Lightlike Noncommutativity." JHEP 9 (2000): 23. (Academic Article)
 Aharony, O, Gomis, J, and Mehen, T. "On theories with lightlike noncommutativity." Journal of High Energy Physics 4, no. 9 PART A (2000): XXXII14.
 Fleming, S, Mehen, T, and Stewart, IW. "NN scattering ^{3}S1^{3}D1 mixing angle at nexttonexttoleading order." Physical Review C  Nuclear Physics 61, no. 4 (January 1, 2000): 440051440059.
 Fleming, S, Mehen, T, and Stewart, IW. "NNLO corrections to nucleonnucleon scattering and perturbative pions." Nuclear Physics A 677, no. 14 (2000): 313366.
 Fleming, S, Mehen, T, and Stewart, IW. "The NN Scattering $^3S_1{}^3D_1$ Mixing Angle at NNLO." Phys. Rev. C 61 (2000): 044005. (Academic Article)
 Fleming, S, Mehen, T, and Stewart, IW. "NN scattering ^{3}S_{1}^{3}D_{1} mixing angle at nexttonexttoleading order." Physical Review C  Nuclear Physics 61, no. 4 (2000): 440051440059.
 Gomis, J, Kleban, M, Mehen, T, Rangamani, M, and Shenker, S. "Noncommutative Gauge Dynamics from the String World Sheet." JHEP 8 (2000): 11. (Academic Article)
 Gomis, J, Mehen, T, Rangamani, M, Kleban, M, and Shenker, S. "Noncommutative gauge dynamics from the string worldsheet." Journal of High Energy Physics 4, no. 8 PART A (2000): 118.
 Gomis, J, Mehen, T, and Wise, MB. "Quantum Field Theories with Compact Noncommutative Extra Dimensions." JHEP 8 (2000): 29. (Academic Article)
 Gomis, J, Mehen, T, and Wise, MB. "Quantum field theories with compact noncommutative extra dimensions." Journal of High Energy Physics 4, no. 8 PART B (2000): 115.
 Gomis, J, and Mehen, T. "Spacetime noncommutative field theories and unitarity." Nuclear Physics B 591, no. 12 (2000): 265276.
 Mehen, T, Stewart, IW, and Wise, MB. "Conformal Invariance for NonRelativistic Field Theory." Phys. Lett. B 474 (2000): 145152. (Academic Article)
 Mehen, T, Stewart, IW, and Wise, MB. "The physics of the centrality dependence of elliptic flow." Physics Letters, Section B: Nuclear, Elementary Particle and HighEnergy Physics 474, no. 12 (2000): 2732. Full Text
 Mehen, T, and Stewart, IW. "Radiation pions in twonucleon effective field theory." Nuclear Physics A 665, no. 12 (2000): 164182.
 Mehen, T, and Wise, MB. "Generalized *Products, Wilson Lines and the Solution of the SeibergWitten Equations." JHEP 12 (2000): 8. (Academic Article)
 Mehen, T, and Wise, MB. "Generalized *products, Wilson lines and the solution of the SeibergWitten equations." Journal of High Energy Physics 4, no. 12 (2000): XVII9.
 Mehen, T, Stewart, IW, and Wise, MB. "Wigner symmetry in the limit of large scattering lengths." Physical Review Letters 83, no. 5 (1999): 931934.
 Mehen, T, and Stewart, IW. "Renormalization schemes and the range of twonucleon effective field theory." Physical Review C  Nuclear Physics 59, no. 5 (1999): 23652383.
 Mehen, T, and Stewart, IW. "A momentum subtraction scheme for twonucleon effective field theory." Physics Letters, Section B: Nuclear, Elementary Particle and HighEnergy Physics 445, no. 34 (1999): 378386.
 Fleming, S, and Mehen, T. "Photoproduction of hc." Physical Review D  Particles, Fields, Gravitation and Cosmology 58, no. 3 (August 1, 1998): 03750310375034.
 Fleming, S, and Mehen, T. "Photoproduction of h(c)." Physical Review D 5803, no. 3 (August 1998): art. no.037503. (Academic Article)
 Fleming, S, and Mehen, T. "Photoproduction of." Physical Review D 58, no. 3 (June 1998). Full Text
 Fleming, S, and Mehen, T. "Leptoproduction of J/ψ." Physical Review D  Particles, Fields, Gravitation and Cosmology 57, no. 3 (1998): 18461857.
 Fleming, S, and Mehen, T. "Photoproduction of h_{c}." Physical Review D  Particles, Fields, Gravitation and Cosmology 58, no. 3 (1998): 03750310375034.
 Mehen, T. "Summing O(β0nαsn+1) corrections to top quark decays." Physics Letters B 417, no. 34 (January 1998): 353360. Full Text
 Mehen, T. "Summing O(beta(n)(0)alpha(n+1)(s)) corrections to top quark decays." Physics Letters B 417, no. 34 (January 1998): 353360. (Academic Article)
 Mehen, T. "Summing O( β_{0}^{n}α_{s}^{n+1}) corrections to top quark decays." Physics Letters, Section B: Nuclear, Elementary Particle and HighEnergy Physics 417, no. 34 (1998): 353360.
 Mehen, T. "Testing quarkonium production with photoproduced JlΨ+ γ." Physical Review D  Particles, Fields, Gravitation and Cosmology 55, no. 7 (1997): 43384343.
 Falk, AF, and Mehen, T. "Excited heavy mesons beyond leading order in the heavy quark expansion." Physical Review D  Particles, Fields, Gravitation and Cosmology 53, no. 1 (1996): 231240.
 Mehen, T. "Scale setting in top quark decays." Physics Letters, Section B: Nuclear, Elementary Particle and HighEnergy Physics 382, no. 3 (1996): 267272. Full Text

 Teaching & Mentoring

Recent Courses
 Scholarly, Clinical, & Service Activities

Presentations & Appearances
 Recent Developments in Quarkonium Production and Spectroscopy. December 4, 2013 2013
 Exotic Quarkonium Spectroscopy: X(3872), Z(10610), and Z(10650) in NonRelativistic Effective Theory. September 11, 2013 2013
 Double Parton Fragmentation for Quarkonium. July 25, 2013 2013
 Recent Developments in Quarkonium Production and Spectroscopy. July 18, 2013 2013
 X(3872), Z(10610), and Z(10650) in NonRelativistic Effective Theory. April 27, 2013 2013
 Effective Theory for Heavy Meson Molecules. April 30, 2012 2012
 Effective Field Theory for Heavy Hadron Molecules. February 27, 2012 2012
 Effective Field Theory for Heavy Hadron Molecules (but mostly X(3872)). November 17, 2011 2011
 Charmed Exotics and the X(3872). September 3, 2010 2010
 Charming Exotic Mesons and the Strong Interactions'' Departmental Colloquium, NC State, Raleigh, NC 2010/03/22 March 22, 2010 0 71 35804 [859]Mehen,Thomas [531]Invited Lectures Charmed Exotics and the X(3872)''. September 3, 2010 2010
 X(3872) Decays in XEFT. December 17, 2009 2009
 Phenomenology of ColorOctet Scalars at the LHC. October 23, 2009 2009
 Effective Field Theories and Multiple Scales in Quantum Physics. September 11, 2009 2009
 Hadronic Molecules. September 2, 2009 2009
 Decays of X(3872) to Quarkonia in XEFT. August 11, 2009 2009
 XEFT and X(3872) Decays to Quarkonia. August 4, 2009 2009
 Resummation in Heavy Particle Production. May 7, 2009 2009
 NonRelativistic Conformal Field Theory and Trapped Cold Atoms. March 23, 2009 2009
 "XEFT and X(3872) Decays to Quarkonia'' International Workshop on Heavy Quarkonia 2008. December 3, 2008 2008
 Effective Field Theory and Strongly interacting Systems: from Charmed Hadrons and Cold Atoms. February 29, 2008 2008

Service to the Profession
 Early Career Award (DoE) Reviewer. December 21, 2013 2013
 Journal Referee Physical Review Letters, Physical Review D, Physics Letters B. December 21, 2013 2013
 Conference Organizer, SCET2013: Xth Annual Workshop on SoftCollinear Effective Theory, Duke U., Durham, NC,. March 14, 2013  March 16, 2016 2013  2016
 Conference Organizer, SCET2013, to be held at Duke Uinversity, March 1416, 2013. December 15, 2012 2012
 Journal Referee Physical Review Letters, Physical Review D, Physics Letters B. December 15, 2012 2012
 Triangle Nuclear Theory Colloquium Organizer. December 15, 2012 2012
 Referee  Physical Review D, Jounal of High Energy Physics, European Journal of Physics A, Physics Letters B. December 13, 2011 2011
 ``Frontiers in QCD'' : Institute for Nuclear Theory Workshop, coorganizer. September 19, 2011  November 18, 2011 2011
 Referee  Physical Review D, Physics Review Letters, European Journal of Physics C. December 19, 2010 2010
 Triangle Theory Nuclear Colloquium Committee, Organizer. December 19, 2010 2010
 ``Frontiers in QCD'' : Institute for Nuclear Theory Workshop, CoOrganizer. December 19, 2010 2010
 Referee  Nuclear Physics A, Physical Review D, Physics Letter, Physics Review Letters, European Journal of Physics C. December 18, 2009 2009
 Triangle Nuclear Theory Colloquium, Organizer. December 18, 2009 2009
 Journal Referee. December 15, 2008 2008
 Nuclear/Particle Theory Seminar Organizer. December 15, 2008 2008
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