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Michael Dugger

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Assoc Professor
Faculty, POLY Campus, Mailcode 2780
Biography: 

Michael Dugger obtained a merged physics/mathematics undergraduate degree at Northern Arizona University. Since that time, Michael has been associated with Arizona State University. In 2001 Professor Dugger successfully defended his dissertation on eta(547) and eta(958) meson photoproduction on the proton, graduating with a doctorate from Arizona State University. Immediately after he became a postdoctoral fellow, then an assistant research professor (2006), an associate research professor (2013) and is currently an associate professor (2017). The bulk of Professor Dugger's research has been associated with the Thomas Jefferson National Accelerator Facility located in Newport News, Virginia, where a multi-GeV electron beam is utilized to produce physics events related to the structure of the strongly interacting systems of quarks.

Education: 
  • Ph.D. Department of Physics and Astronomy, Arizona State University
  • B.S. Department of Physics and Astronomy, Northern Arizona University
Research Interests: 

The vast majority of the mass in an atom is contained within a nucleus that is comprised of nucleons (neutrons and protons). Each nucleon contains three quarks that communicate to each other by way of the strong force through gluon fields. In addition to the family of three quark objects (baryons), there are many known bound states made up of a quark and anti-quark. The family of quark anti-quark objects are called mesons and are the primary way in which information flows between the nucleons that make up the nucleus of an atom. The theoretical framework for understanding the strongly interacting quark systems is called Quantum Chromodynamics (QCD).

 

It is believed that QCD is the correct theory for strongly interacting systems, however QCD is very difficult theory for calculating the properties of bound states. At this time no one has been able to use QCD to calculate the spectrum of baryons or mesons. Because of the difficulty theorist have in calculating bound quark states using QCD, many theorists have developed models of the baryons and mesons by guessing what symmetries and degrees of freedom within QCD are most essential to the question of bound state quarks. This is challenging work and requires detail experimental information to help illuminate the way forward.

 

Theoretical models for hadrons (bound quark systems that include baryons, mesons) tend to over estimate the number of excited neutron and proton states (called resonances), leading to the missing resonance problem. On the experimental side, the discovery of a full resonance picture is hampered by the fact that most of the resonances are broad and overlapping, making the determination of individual resonances, and properties thereof, difficult. To resolve individual resonances, cross section measurements are not enough, leading to the need for polarization observables.

 

Another question that needs to be addressed, is what type of hadronic matter is possible. There is no theoretical justification within QCD to exclude hadrons beyond mesons and baryons. There might well exist "exotic" hadrons comprised of four or more quarks, and even the case of zero quarks (glueballs). Of the exotic hadrons a hybrid meson is one possibility. The hybrid meson can be thought of as a normal meson state where one of more gluons has been promoted from virtual to real.

 

Dr. Dugger's research interests are in determining the resonance structure of baryons and in finding exotic QCD objects to help us better understand strongly interacting systems. To this end, Michael is a member of two large collaboration of physicists: the CEBAF (Continuous Electron Beam Accelerator Facility) Large Acceptance Spectrometer Collaboration (CLAS), and the GlueX collaboration. Dr. Dugger's CLAS collaboration efforts center on determining the details of the baryon resonance structure by measuring differential cross section, as well as various polarization observables. The GlueX portion of his research efforts deal with the observation of potential hybrid meson states. As part of his GlueX involvement, Dr. Dugger designed and built, with the assistance of students, a novel photon polarimeter that uses the production of electron-positron pairs of an atomic electron to determine the polarization of a high-energy photon beam that is used to create mesons by way of photoproduction from a proton target. The polarization information of the incident photon beam is vital in helping determine if a produced meson can be identified as exotic. Dr. Dugger is also exploring possible participation in a collaborative effort to establish a kaon beam capability at Jefferson Lab to be used with the GlueX detector. The kaon beam, having net strangeness, will be a very useful tool in creating excited cascade states that have a missing resonance problem that is even more pronounced than that of the proton and neutron.

 

Publications: 
  1. “The Palo Verde reactor neutrino experiment – a test for long baseline neutrino oscillations,” F. Boehm, J. Hanson, H. Henrikson, D. Michael, V.M. Novikov, A. Piepke, P. Vogel, S. Yang, G. Gratta, L. Miller, D. Tracy, Y.F. Wang, J. Busenitz, J. Cornis, A. Vital, J. Wolf, M. Dugger, D. Lawrence, B. Ritchie, S. Pittalwala, R. Wilferd, S. Young, Prog. Part. and Nucl. Phys. 40, 253-262 (1998).
  2. “The Palo Verde reactor neutrino experiment: a test for long baseline neutrino oscillations,” F. Bo­ehm, J. Busenitz, J. Cornis, M. Dugger, G. Gratta, J. Hanson, H. Henrikson, D. Lawrence, D. Michael, L. Miller, V. M. Novikov, A. Piepke, S. Pittalwala, B. Ritchie, D. Tracy, A. Vital, J.P. Vogel, Y.F. Wang, R. Wilferd, J. Wolf, S. Young, Nucl. Phys. B Proc. Supp. 70, 191-194 (1999).
  3. “The bremsstrahlung tagged photon beam in Hall B at JLab,” D.I. Sober, Hall Crannell, Alberto Longhi, S. K. Matthews, J.T. O’Brien, B.L. Berman, W.J. Briscoe, Philip L. Cole, J.P. Connelly, W.R. Dodge, L.Y. Murphy, S.A. Philips, M.K. Dugger, D. Lawrence, B.G. Ritchie, E.S. Smith, James M. Lambert, E. An­ciant, G. Audit, T. Auger, C. Marchand, M. Klusman, J. Napolitano, M.A. Khandaker, C.W. Salgado and A.J. Sarty, Nucl. Instr. and Meth. in Phys. Res. A 440, 263-284 (2000).
  4. “Photoproduction of φ(1020) mesons on the pro­ton at large momentum transfer,” E. Anciant, et al. (The CLAS Collaboration), Phys. Rev. Lett. 85, 4682­4686 (2000).
  5. “The epe'pη reaction at and above the S11 (1535) baryon resonance,” R. Thompson, et al. (The CLAS Collaboration), Phys. Rev. Lett. 86, 1702-1706 (2000).
  6. “Electroproduction of the Λ(1520) hyperon,” S. P. Barrow, et al. (The CLAS Collaboration), Phys. Rev. C 64, 044601-1 to 044601-10 (2001).
  7. “Photoproduction of the ρ0 meson on the proton at large momentum transfer,” M. Battaglieri, et al. (The CLAS Collaboration), Phys. Rev. Lett. 87, 172002­1 to 172002-6 (2001).
  8. “First measurement of the double spin asymmetry in in the resonance region,” R. De Vita, et al. (The CLAS Collaboration), Phys. Rev. Lett. 88, 082001-1 to 082001-6 (2002).
  9. Q2 dependence of quadrupole strength in the γ + p → ∆+(1232) → pπ0 transition,” K. Joo, et al. (The CLAS Collaboration), Phys. Rev. Lett. 88, 122001-1 to 122001-5 (2002).
  10. η photoproduction on the proton for photon en­ergies from 0.75 to 1.95 GeV,” M. Dugger, et al. (The CLAS Collaboration), Phys. Rev. Lett. 88, 222002-1 to 222002-5 (2002).
  11. “Photoproduction of the ω meson on the proton at large momentum transfer,” M. Battaglieri, et al. (The CLAS Collaboration), Phys. Rev. Lett. 90, 022002­1 to 0222002-5 (2002).
  12. “First measurement of the transferred polarization in the exclusive reaction,” D.S. Carman, et al. (The CLAS Collaboration), Phys. Rev. Lett. 90, 131804-1 to 131804-6 (2003).
  13. “The CEBAF large acceptance spectrometer (CLAS),” B.A. Mecking, et al. (The CLAS Collab­oration), Nucl. Instrum. and Meth. A 503, 513-553 (2003).
  14. “Measurement of inclusive spin structure func­tions of the deuteron,” J. Yun, et al. (The CLAS Collaboration), Phys. Rev. C 67, 055203-1 to 055203-10 (2003).
  15. “Kinematically complete measurement of the pro­­ton structure function F2 in the resonance region and evaluation of its moments,” M. Osipen­ko, et al. (The CLAS Collaboration), Phys. Rev. D 67, 092001-1 to 092001-18 (2003).
  16. “Measurement of ep→epπ+π− and baryon reso­nance analysis,” M. Ripani, et al. (The CLAS Col­laboration), Phys. Rev. Lett. 91, 222002-1 to 222002-6 (2003).
  17. “Observation of nuclear scaling in the A(e,e') re­action at xB >1,” K.Sh. Egiyan, et al. (The CLAS Collaboration), Phys. Rev. C 68, 014313-1 to 014313-10 (2003).
  18. ep → epπ0 reaction studied in the ∆(1232) mass region using polarization asymmetries,” A. Biselli, et al. (The CLAS Collaboration), Phys. Rev. C 68, 035202-1 to 035202-10 (2003).
  19. “Measurement of the polarized structure function sLT  for in the ∆(1232) resonance region,” K. Joo, et al. (The CLAS Collaboration), Phys. Rev. C 68, 032201-1 to 032201-5 (2003).
  20. “Measurement of the proton spin structure func­tion g1(x,Q2) for Q2 from 0.15 to 1.6 GeV2 with CLAS,” R. Fatemi, et al. (The CLAS Collaboration), Phys. Rev. Lett. 91, 222002-1 to 222002-6 (2003).
  21. “Observation of an exotic S =+1 baryon in exclu­sive photoproduction from the deuteron,” S. Stepa­nyan, et al. (The CLAS Collaboration), Phys. Rev. Lett. 91, 252002-1 to 252001-6 (2003).
  22. “Observation of an exotic baryon with S =+1 in photoproduction from the proton,” V. Ku­ba­rov­sky, et al. (The CLAS Collaboration), Phys. Rev. Lett. 92, 032001-1 to 032001-5 (2004).
  23. “Two-nucleon momentum distributions measured in 3He(e,epp)n,” R.A. Niyazov, et al. (The CLAS Col­laboration), Phys. Rev. Lett. 92, 052303-1 to 052303-5 (2004).
  24. “Tensor polarization of the phi meson photopro­duced at high t,” K. McCormick, et al. (The CLAS Col­laboration), Phys. Rev. Lett. 92, 032203-1 to 032203-5 (2004).
  25. “Hyperon photoproduction in the nucleon reso­nance region,” J.W.C. McNabb, et al. (The CLAS Collaboration), Phys. Rev. C 69, 042201-1 to 042201-5 (2004).
  26. “Measurement of beam-spin asymmetries for π+ electroproduction above the baryon resonance re­gion,” H. Avakian, et al. (The CLAS Collaboration), Phys. Rev. D 69, 112004-1 to 112004-7 (2004).
  27. “Complete angular distribution measurements of two-body deuteron photodisintegration between 0.5 and 3 GeV,” M. Mirazita, et al. (The CLAS Collaboration), Phys. Rev. C 70, 014005-1 to 014005-12 (2004).
  28. “Proton source size measurements in the eA→ e’ ppX reaction,” A.V. Stavinsky, et al. (The CLAS Col­lab­o­ra­tion), Phys. Rev. Lett. 93 192301-1 to 192301-6 (2004).
  29. “Measurement of the polarized structure function σLT  for  in the ∆(1232) resonance re­gion,” K. Joo, et al. (The CLAS Collaboration), Phys. Rev. C 70, 042201-1 to 042201-6 (2004).
  30. “Complete measurement of three-body photodis­integration of 3He for photon energies between 0.35 and 1.55 GeV,” S. Niccolai, et al. (The CLAS Collaboration), Phys. Rev. C 70, 064003-1 to 064003-18 (2004).
  31. “Exclusive ρ0 meson electroproduction from hy­drogen at CLAS,” C. Hadjidakis, et al. (The CLAS Collaboration), Phys. Lett. B 605, 256-264 (2005).
  32. “Onset of asymptotic scaling in deuteron photo­disintegration,” P. Rossi, et al. (The CLAS Collabora­tion), Phys. Rev. Lett. 93, 012301-1 to 012301-4 (2005).
  33. “Survey of ALT’ asymmetries in semi-exclusive elec­tron scattering on 4He and 12C,” D. Pro­to­popescu, et al. (The CLAS Collaboration), Nucl. Phys. A 748, 357-373 (2005).
  34. “Exclusive photoproduction of the cascade (Ξ) hyperon,” J. W. Price et al. (The CLAS Collaboration), Phys. Rev. C 71, 058201-1 to 058201-5 (2005).
  35. “Radiative decays of the Σ0(1385) and Λ(1520) hyperons,” S. Taylor et al. (The CLAS Collaboration), Phys. Rev. C 71, 054609-1 to 054609-14 (2005).
  36. “Deeply virtual and exclusive electroproduction of omega mesons,” L. Morand, et al. (The CLAS Collaboration), Eur. J. Phys. A 24, 445-458 (2005).
  37. “Beam-Helicity Asymmetries in Double-Charged-Pion Photoproduction on the Proton,” S.  Strauch, et al. (The CLAS Collaboration), Phys. Rev. Lett. 95, 162003-1 to 16203-16 (2005).

  38. “Measurement of the polarized structure function σ­­LT’ for pion electroproiduction in the Roper-resonance region,” K. Joo, et al. (The CLAS Collaboration),  Phys. Rev. C 72, 058202-1 to 058201-5 (2005).

  39. “Search for θ+(1540) pentaquark in high-statistics measurement of  at CLAS,” M. Battaglieri, et al. (The CLAS Collaboration). Rev. Lett. 96, 042001-1 to 042001-6 (2006).

  40. “η’ photoproduction on the proton for photon energies from 1.527 to 2.227 GeV,” M. Dugger, et al. (The CLAS Collaboration), Phys. Rev. Lett. 96, 062001-1 to 062001-6 (2006).

  41. “Single π+ electroproduction on the proton in the first and second resonance regions at 0.25 GeV2 < Q2 < 0.65 GeV2.” H. Egiyan, et al. (The CLAS Collaboration). Phys. Rev. C 73, 025204-1 to 025204-32 (2006).

  42. “Measurement of two- and three-nucleon short-range correlation probabilities in nuclei,” K. Egiyan, et al. (The CLAS Collaboration). Phys. Rev. Lett. 96, 082501-1 to 082501-6 (2006).

  43. “Elecytron scattering from high-momentum neutrons in deuterium,” A.V. Klimenko, et al. (The CLAS Collaboration). Phys. Rev. C 73, 035212-1 to 035212-14 (2006).

  44. “Differential cross sections for γ + p → k+ + Y for Λ and Σ0 hyperons.” R. Bradford, et al. (The CLAS Collaboration). Phys Rev C. 73, 035202-1 to 035202-36 (2006).

  45. “Measurenemt of the deuteron structure function F2 in the resonance region and evaluation of its moments,” Osipenko, M, et al. (The CLAS Collaboration). Phys. Rev. C. 73, 045205-1 to 045205-22 (2006).

  46. “Search for the Theta(+) Pentaquark in the reaction gamma d -> pK(-)K(+)n,” McKinnon, B, et al. (The CLAS Collaboration). Phys. Rev. Lett. 96, 212001 (2006).

  47. “Search for the Theta(+) pentaquark in the gamma d ->Lambda nK(+) reaction measured with the CLAS spectrometer,” Niccolai, S, et al. (The CLAS Collaboration). Phys. Rev. Lett. 97, 032001 (2006).

  48. “Measurement of deeply virtual compton scattering with a polarized-proton target,” Chen, S, et al. (The CLAS Collaboration).  Phys. Rev. Lett. 97, 072002 (2006).

  49. “Search for the Theta(+) pentaquark in the reactions gamma p ->(K)over-bar(0)K(+)n and gamma p ->(K)over-bar(0)K(0)p,” De Vita, R, et al. (The CLAS Collaboration).  Phys. Rev. D. 74, 032001 (2006).

  50. “Measurement of the N ->Delta (+)(1232) transition at high-momentum transfer by pi(0) electroproduction,” Ungaro, M, et al. (The CLAS Collaboration). Phys. Rev. Lett. 97, 112003 (2006).

  51. “Measurement of the x- and Q(2)-dependence of the asymmetry A(1) on the nucleon,” Dharmawardane, et al. (The CLAS Collaboration). KV, Phys. Lett. B. 641, 11 (2006).

  52. “First measurement of beam-recoil observables C-x and C-z in hyperon photoproduction,”  Bradford, RK, et al. (The CLAS Collaboration). Phys. Rev. C 75, 035205 (2007).

  53. “Cross sections for the gamma p -> K-*0 Sigma(+) reaction at E-gamma=1.7-3.0 GeV,” Hleiqawi, I, et al. (The CLAS Collaboration). Phys. Rev. C 75, 042201 (2007).

  54. “Experimental study of exclusive H-2(e,e ' p)n reaction mechanisms at high Q(2),” Egiyan, KS, et al. (The CLAS Collaboration). Phys. Rev. Lett. 98, 262502 (2007).

  55. “Cascade production in the reactions gamma p -> K+K+(X) and gamma p -> K+K+pi(-)(X),” Guo, L, et al. (The CLAS Collaboration). Phys. Rev. C 76, 025208 (2007).

  56. “pi(0) photoproduction on the proton for photon energies from 0.675 to 2.875 GeV,” Dugger, M, et al. (The CLAS Collaboration). Phys. Rev. C 76, 025211 (2007).

  57. “Cross sections for the gamma p K-*0 Sigma(+) reaction at E gamma = 1.7-3.0 GeV,” Hleiqawi, I, et al. (The CLAS Collaboration). Phys. Rev. C 76, 039905 (2007).

  58. “Separated structure functions for the exclusive electroproduction of K+Lambda and K+Sigma(0) final states,” Ambrozewicz, P, et al. (The CLAS Collaboration). Phys. Rev. C 75, 045203 (2007).

  59. “Search for medium modifications of the rho meson,” Nasseripour, R, et al. (The CLAS Collaboration). Phys. Rev. Lett. 99, 262302 (2007).

  60. “Measurement of coherent phi-meson photoproduction from the deuteron at low energies,” Mibe, T, et al. (The CLAS Collaboration). Phys. Rev. C 76, 052202 (2007).

  61. “Cross sections and beam asymmetries for (e)over-right-arrowp -> en pi(+) in the nucleon resonance region for 1.7 <= Q(2)<= 4.5 GeV2,” Park, K, et al. (The CLAS Collaboration). Phys. Rev. C 77, 015208 (2008).

  62. “Bayesian analysis of pentaquark signals from CLAS data,” Ireland, DG, et al. (The CLAS Collaboration). Phys. Rev. Lett. 100, 052001 (2008).

  63. “Measurement of ep -> ep pi(0) beam spin asymmetries above the resonance region,” De Masi, R, et al. (The CLAS Collaboration). Phys. Rev. C 77, 042201 (2008).

  64. “Measurement of deeply virtual compton scattering beam-spin asymmetries,” Girod, FX, et al. (The CLAS Collaboration). Phys. Rev. Lett. 100, 162002 (2008).

  65. “Polarized structure function σLT’ for 1H(e,e’,K+)Λ in the nucleon resonance region,” Nasseripour, R,  et al. (The CLAS Collaboration). Phys. Rev. C 77, 065208 (2008).

  66. “Electroproduction of phi(1020) mesons at 1.4 <= Q(2) <= 3.8 GeV2 measured with the CLAS spectrometer,” Santoro, JP, et al. (The CLAS Collaboration).  Phys. Rev. C 78, 025210 (2008).

  67. “Electroexcitation of the Roper resonance for 1.7 < Q(2)< 4.5 GeV2 in ep -> en pi(+),” Aznauryan, IG, et al. (The CLAS Collaboration).  Phys. Rev. C 78, 045209 (2008).

  68. “First measurement of target and double spin asymmetries for ep -> ep pi(0) in the nucleon resonance region above the Delta(1232),” Biselli, AS, et al. (The CLAS Collaboration).  Phys. Rev. C 78, 045204 (2008).

  69. “Moments of the spin structure functions g(1)(p) and g(1)(d) for 0.05 < Q(2) < 3.0 GeV2,” Prok, Y; Bosted, P; Burkert, VD, et al. (The CLAS Collaboration).  Phys. Lett. B 672, 12 (2009).

  70. “Electroproduction of p pi(+)pi(-) off protons at 0.2 < Q(2) < 0.6 GeV2 and 1.3 < W < 1.57 GeV with the CLAS detector,” Fedotov, GV; Mokeev, VI; Burkert, VD,  et al. (The CLAS Collaboration). Phys. Rev. C 79, 015204 (2009).

  71. “Exclusive rho(0) electroproduction on the proton at CLAS,” Morrow, SA; Guidal, M; Garcon, M,  et al. (The CLAS Collaboration). Eur. Phys. Jour. A. 39 5 (2009).

  72. “Search for the Photoexcitation of Exotic Mesons in the pi(+)pi(+)pi(-) System,” Nozar, M; Salgado, C; Weygand, DP, et al. (The CLAS Collaboration). Phys. Rev. Lett. 102, 102002 (2009).

  73. “Measurement of Direct f(0)(980) Photoproduction on the Proton,” Battaglieri, M; De Vita, R; Szczepaniak, AP, et al. (The CLAS Collaboration ). Phys. Rev. Lett. 102, 102001 (2009).

  74. “Precise Measurement of the Neutron Magnetic Form Factor G(M)(n) in the Few-GeV2 Region,” Lachniet, J; Afanasev, A; Arenhovel, H, et al. (The CLAS Collaboration ). Phys. Rev. Lett. 102, 192001 (2009).

  75. “pi(+) photoproduction on the proton for photon energies from 0.725 to 2.875 GeV,” Dugger, M; Ritchie, BG; Ball, JP,  et al. (The CLAS Collaboration). Phys. Rev. C 79, 065206 (2009).

  76. “Measurement of semi-inclusive pi(+) electroproduction off the proton,” Osipenko, M, et al. (The CLAS Collaboration). Phys. Rev D. 80, 032004 (2009).

  77. “Beam spin asymmetries in deeply virtual Compton scattering (DVCS) with CLAS at 4.8 GeV,” Gavalian, G, et al. (The CLAS Collaboration). Phys. Rev. C 80, 035206 (2009).

  78. “Differential cross sections for the reactions gamma p -> p eta and gamma p -> p eta',” Williams, M, et al. (The CLAS Collaboration). Phys. Rev. C 80, 045213 (2009).

  79. “Differential cross sections and spin density matrix elements for the reaction gamma p -> p omega,” Williams, M et al. (The CLAS Collaboration). Phys. Rev. C 80, 065208 (2009).

  80. “Partial wave analysis of the reaction gamma p -> p omega and the search for nucleon resonances,” Williams, M et al. (The CLAS Collaboration). Phys. Rev. C 80, 065209 (2009).

  81. “Angular distribution of scattered electrons associated with collimated bremsstrahlung and the tagging technique”, L.C. Maximon, J. Ahrens, and M. Dugger, Nucl. Instr. And Meth. In Phys. Res. A 603, 268 (2009).

  82. “Evidence for a backward peak in the gamma d -> pi(0)d cross section near the eta threshold,” Ilieva, Y. et al. (The CLAS Collaboration). Eur. Phys A 43, 261 (2010).

  83. “Differential cross section and recoil polarization measurements for the gamma p -> K+ Lambda reaction using CLAS at Jefferson Lab,” McCracken, ME. et al. (The CLAS Collaboration). Phys. Rev. C 81, 025201 (2010).

  84. “Differential cross section of gamma n -> K+Sigma(-) on bound neutrons with incident photons from 1.1 to 3.6 GeV,” Pereira, SA. et al. (The CLAS Collaboration). Phys. Lett. B 688 289 (2010).

  85. “Differential cross sections and recoil polarizations for the reaction gamma p -> K+Sigma(0),” Dey, B.  et al. (The CLAS Collaboration). Phys. Rev. C 82 025202 (2010).

  86. “Comment on ‘Observation of a narrow structure in H-1(gamma,K-S(0))X via interference with phi-meson production’,” Anghinolfi, M . et al.  Phys. Rev. C 86 069801 (2012).

  87. “Differential photoproduction cross sections of the Sigma(0)(1385), Lambda(1405), and Lambda(1520) ,” Moriya, K. et al. (The CLAS Collaboration). Phys. Rev. C 88 045201 (2013).

  88. “Beam asymmetry Sigma for pi(+) and pi(0) photoproduction on the proton for photon energies from 1.102 to 1.862 GeV,” Dugger, M. et al. (The CLAS Collaboration). Phys. Rev. C 88 065203 (2013).

  89. “Spin and parity measurement of the Lambda(1405) baryon,” Moriya, K. et al. (The CLAS Collaboration). Phys. Rev. Lett. 112 082004 (2014).

  90. “phi-meson photoproduction on hydrogen in the neutral decay mode,” Seraydaryan, H. et al. (The CLAS Collaboration). Phys. Rev. C 89 055206 (2014).

  91. “Data analysis techniques, differential cross sections, and spin density matrix elements for the reaction gamma p → phi p,” Dey, B. et al. (The CLAS Collaboration). Phys. Rev. C 89 055208 (2014).

  92. “Momentum sharing in imbalanced Fermi systems,” Hen, O. et al. (The CLAS Collaboration). Science  346, issue 6209, pages 614-617 (2014).

  93. “First measurement of the polarization observable E in the gamma p → p pi(+) n reaction up to 2.25 GeV,” Strauch, S. et al. (The CLAS Collaboration). Phys. Lett. B 750 53-58 (2015).

  94. “First measurement of the helicity asymmetry E in eta photoproduction on the proton,” Senderovich, I. et al. (The CLAS Collaboration). Phys. Lett. B 755 64-69 (2016).

  95. “Photoproduction of Lambda and Sigma(0) hyperons using linearly polarized photons ,” Peterson, C.A. et al. (The CLAS Collaboration). Phys. Rev. C 93 065201 (2016).

  96. “Photoproduction of the f(1)(1285) meson,” Dickson, R. et al. (The CLAS Collaboration). Phys. Rev. C 93 065202 (2016).

  97. "Measurement of the beam asymmetry Σ for π0 and η photoproduction on the proton at Eγ = 9 GeV", H. Al Ghoul et al.(CLAS Collaboration), Phys. Rev. C95 (2017) (4), p. 042201

  98. "Photon beam asymmetry Σ for η and η! photoproduction from the proton", P. Collins et al.(CLAS Collaboration), Phys. Lett. B771 (2017), pp. 213–221

  99. "Design and construction of a high-energy photon polarimeter", M. Dugger et al., Nucl. Instrum. Meth. A867 (2017), pp. 115–127

  100. "Differential cross sections and polarization observables from CLAS K* photoproduction and the search for new N* states", A. V. Anisovich et al.(CLAS Collaboration), Phys. Lett. B771 (2017), pp. 142–150

  101. "Differential cross section measurements for γn -> π−p above the first nucleon resonance region", P. T. Mattione et al.(CLAS Collaboration), Phys. Rev. C96 (2017) (3), p. 035204.

  102. "Photon beam asymmetry Σ  in the reaction γp -> pω for Eγ  = 1.152 to 1.876 GeV", P.  Collins  et al.(CLAS Collaboration), Phys. Lett. B773 (2017), pp. 112–120

  103.  "N∗ -> Nη' decays from photoproduction of η'-mesons off protons", A. V. Anisovich, V. Burkert, P. M. Collins, M. Dugger, E. Klempt, V. A. Nikonov, B. G. Ritchie,A. V. Sarantsev and U. Thoma, Phys. Lett. B772 (2017), pp. 247–252

  104. "Measurement of the helicity asymmetry E in ω π+π−π0 photoproduction", Z. Akbar et al.(CLAS Collaboration), Phys. Rev. C96 (2017) (6), p. 065209

  105. "Measurement of the beam asymmetry Σ and the target asymmetry T in the photoproduction of ω mesons off the proton using CLAS at Jefferson Laboratory," P. Roy et al.(CLAS Collaboration), Phys. Rev. C97 (2018) (5), p. 055202

  106. "Exclusive photoproduction of π0 up to large values of Mandelstam variables s, t and u with CLAS", M. C. Kunkel et al.(CLAS Collaboration), Phys. Rev. C98 (2018) (1), p. 015207

  107. "Proton-η' interactions at threshold", A. V. Anisovich, V. Burkert, M. Dugger, E. Klempt, V. A. Nikonov, B. G. Ritchie, A. V. Sarantsev and U. Thoma, Phys. Lett. B785 (2018), pp. 626–630

  108. "First measurement of Ξ− polarization in photoproduction", J. Bono et al.(CLAS Collaboration), Phys. Lett. B783 (2018), pp. 280–286

  109. "First results on nucleon resonance photocouplings from the γp -> π+π−p reaction", E. Golovatch et al.(CLAS Collaboration), Phys. Lett. B788 (2019), pp. 371–379

  110. "Photoproduction of K+K− meson pairs on the proton", S. Lombardo et al.(CLAS Collaboration), Phys. Rev. D98 (2018) (5), p. 052009

  111. "Study of Ξ∗ Photoproduction from Threshold to W = 3.3 GeV", J. T. Goetz et al.(CLAS Collaboration), Phys. Rev. C98 (2018) (6), p. 062201

  112. "First Measurements of the Double-Polarization Observables F , P , and H in Photoproduction off Transversely Polarized Protons in the N* Resonance Region", P. Roy et al.(CLAS Collaboration), Phys. Rev. Lett. 122 (2019) (16), p. 162301

  113. "First measurement of near-threshold J/ψ exclusive photoproduction off the proton", A. Ali et al.(GlueX Collaboration), Phys. Rev. Lett. 123 (2019) (7), p. 072001

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  116. "Measurement of the photon beam asymmetry in γ p → K+ Σ0 at Eγ = 8.5 GeV", S. Adhikari et al. (GlueX Collaboration), Phys. Rev. C 101 (2020) 6, 065206

  117. "First measurement of direct photoproduction of the a­2(1320)0 meson on the proton", A. Celentano et al.(CLAS Collaboration), Phys. Rev. C 102 (2020) 3, 032201

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Research Activity: 
Summer 2022
Course NumberCourse Title
PHY 792Research
PHY 795Continuing Registration
Spring 2022
Course NumberCourse Title
PHY 111General Physics
PHY 252Physics III
PHY 492Honors Directed Study
PHY 493Honors Thesis
PHY 495Project Research
PHY 499Individualized Instruction
PHY 792Research
PHY 799Dissertation
Fall 2021
Course NumberCourse Title
PHY 321Vector Mechanics and Vibration
PHY 495Project Research
PHY 792Research
PHY 795Continuing Registration
Summer 2021
Course NumberCourse Title
PHY 792Research
PHY 795Continuing Registration
Spring 2021
Course NumberCourse Title
PHY 321Vector Mechanics and Vibration
PHY 456Laser Optics
PHY 492Honors Directed Study
PHY 493Honors Thesis
PHY 499Individualized Instruction
PHY 792Research
PHY 799Dissertation
Fall 2020
Course NumberCourse Title
PHY 121Univ Physics I: Mechanics
PHY 321Vector Mechanics and Vibration
PHY 495Project Research
PHY 792Research
Summer 2020
Course NumberCourse Title
PHY 792Research
Spring 2020
Course NumberCourse Title
PHY 321Vector Mechanics and Vibration
PHY 394Special Topics
PHY 493Honors Thesis
PHY 499Individualized Instruction
PHY 792Research
Fall 2019
Course NumberCourse Title
PHY 321Vector Mechanics and Vibration
PHY 495Project Research
PHY 792Research
Summer 2019
Course NumberCourse Title
PHY 112General Physics
PHY 792Research
Spring 2019
Course NumberCourse Title
PHY 321Vector Mechanics and Vibration
PHY 499Individualized Instruction
PHY 792Research
Fall 2018
Course NumberCourse Title
PHY 321Vector Mechanics and Vibration
PHY 495Project Research
PHY 499Individualized Instruction
Spring 2018
Course NumberCourse Title
PHY 321Vector Mechanics and Vibration
PHY 493Honors Thesis
PHY 499Individualized Instruction
Fall 2017
Course NumberCourse Title
PHY 331Prin Modern Electromagnetism
PHY 495Project Research
PHY 499Individualized Instruction