Dr. Lamiaa El Fassi is an Associate Professor in the Department of Physics & Astronomy at Mississippi State University. Her research focuses on 1. unraveling the dynamics of strongly interacting particles, hadrons, and their elementary constituents, quarks and gluons, via the study of the hadronization and fragmentation processes that probe the dynamics of quark propagation and hadron formation in cold nuclear matter, and the color transparency phenomenon; that is, the formation and evolution of small size configurations to regular hadrons as well as deciphering the effect of in-medium modifications of the transverse momentum distributions (TMDs) in nuclei, and 2. studying the nucleon structure mainly the anti-quark asymmetry and some medium stimulated effects such as the quark energy loss and the “EMC” effect using the unpolarized Drell-Yan (DY) process as well as the study of the sea-quark Sivers functions, the poorly known gluon/Twist-3 transverse momentum distributions via the J/Ψ production, and the transverse polarization, or transversity, distribution on the polarized DY production.

• Website
• Curriculum Vitae

Post-Doctoral Associates

• Vaniya Ansari, Current Post-Doctoral Research Associate, 2024 Ph.D.
• Mathieu Ouillon, Former Post-Doctoral Research Associate, 2024 Ph.D.
• Utsav Shrestha, Former Post-Doctoral Research Associate, 2021 Ph.D.
• Eric Fuchey, Former Post-Doctoral Research Associate, 2010 Ph.D.
• Mikhail Yurov, Former Post-Doctoral Research Associate, 2018 Ph.D.
• Catherine Ayuso, Former Post-Doctoral Research Associate, 2020 Ph.D.
• Taya Chetry, Former Post-Doctoral Research Associate, 2019 Ph.D.
• Hao Jiang, Former Post-Doctoral Research Associate, 2017 Ph.D.
• Md Latiful Kabir, Former Post-Doctoral Research Associate, 2015 Ph.D.
• Krishna Adhikari, Former Post-Doctoral Research Associate, 2013 Ph.D.

Graduate Students

• Sayantan Acharjya, 2032 Ph.D.
• Uditha Weerasinghe, 2030 Ph.D.
• Nuwan Chaminda Gunawardhana Waduge, 2022 Thesis M.S.
• Shirsendu Nanda, 2019 (non-Thesis) M.S.
• Pubuduni Ekanayaka, 2018 (non-Thesis) M.S.

Teaching Areas

• PH 2233 Physics III
• PH 4213/6213 Intermediate Mechanics I
• PH 4223/6223 Intermediate Mechanics II
• PH 8111 Colloquia & Seminars
• PH 8213 Mechanics
• PH 8613 Nuclear Physics I

Education

• Ph. D., Mohammed V University, Rabat, Morocco jointly with Argonne National Laboratory, Lemont, IL, 2008
• M.S. in High Energy Phys., Mohammed V University, Rabat, Morocco, 2003
• B.S. in Nuclear Phys., Abdelmalek Essaadi University, Tetouan, Morocco, 1999

Experience

• 2020-present: Associate Professor, Mississippi State University
• 2019-2020: Assistant Professor, Mississippi State University
• 2014-2019: Assistant Professor Bridge Position, Mississippi State University
• 2013-2014: Post-Doctoral Associate, Old Dominion University jointly with Jefferson Lab
• 2009-2013: Post-Doctoral Associate, The State of New Jersey University
• 2008-2009: Visiting Research Scholar: The State of New Jersey University
• 2003-2007: Research Assistant, Argonne National Laboratory

Research Interests

• Nuclear and Particle Physics

Publication Impact

Recent Publications

• See the full publication list here.
• "Electro- and photoproduction of muon pairs with \muCLAS12: double deeply virtual compton scattering, timelike compton scattering, and J/psi production", CLAS Collaboration, J.S. Alvarado et al., Eur. Phys. J. A. 62:157, Aug. 2026. Citations: 5
• "Measurement of the near-threshold J/psi photoproduction cross section with the CLAS12 experiment", CLAS Collaboration, P. Chatagnon et al., Phys. Rev. Lett. 113:065203, June 2026. Citations: 16
• "Final SeaQuest Results on the Flavor Asymmetry of the Proton Light-Quark Sea with Proton-Induced Drell-Yan Process", FNAL E906/SeaQuest, C.H. Leung et al., Phys. Rev. Lett. 136: 171901, Apr. 2026. Citations: 2
• "Recoil polarization in K+Y electroproduction in the nucleon resonance region with CLAS12", CLAS Collaboration, D.S Carman et al., Phys. Rev. C. 112:035206, Sept. 2025. Citations: 2
• "First Measurement of Deeply Virtual Compton Scattering on the Neutron with Detection of the Active Neutron", CLAS Collaboration, A. Hobart et al., Phys. Rev. Lett. 133:211903, Nov. 2024. Citations: 18
• "Strong Interaction Physics at the Luminosity Frontier with 22 GeV Electrons at Jefferson Lab", A. Accardi et al., Eur. Phys. J. A 60:173, Sept. 2024. Citations: 224
• "The present and future of QCD", P. Achenbach et al., Nucl. Phys. A 1047:122874, July 2024. Citations: 135
• "Measurement of flavor asymmetry of the light-quark sea in the proton with Drell-Yan dimuon production in p+p and p+d collisions at 120 GeV", FNAL SeaQuest Collaboration, J. Dove et al., Phys. Rev. C 108:035202, Sept. 2023. Citations: 22
• "Precision studies of QCD in the low energy domain of the EIC", V.D. Burkert et al., Prog. Part. Nucl. Phys. 131: 104032, July 2023. Citations: 95
• "First Measurement of Λ Electroproduction off Nuclei in the Current and Target Fragmentation Regions”, CLAS Collaboration, T. Chetry et al., Phys. Rev. Lett. 130:142301, Apr. 2023. Citations: 9

• " ATHENA detector proposal - a totally hermetic electron nucleus apparatus proposed for IP6 at the Electron-Ion Collider", ATHENA Collaboration, J. Adam et al., JINST 17:P10019, Oct. 2022. Citations: 51

• "Science Requirements and Detector Concepts for the Electron-Ion Collider: EIC Yellow Report", The EIC Users Group, R. Abdul Khalek et al., Nucl. Phys. A 1026:122447, Oct. 2022. Citations: 1649

• "The Asymmetry of Antimatter in the Proton”, SeaQuest Collaboration, J. Dove et al., Nature  604:E26, April 2022; Publisher Correction of Nature 590:561-565, Feb. 2021. Citations: 122

• "Determining the gluonic gravitational form factors of the proton", B. Duran et al., Nature 615: 813-816, March 2022. Citations: 191

• "Multidimensional, High Precision Measurements of Beam Single Spin Asymmetries in Semi-inclusive π+ Electroproduction off Protons in the Valence Region," CLAS Collaboration, S. Diehl et al., Phys. Rev. Lett. 128:062005, Feb. 2022. Citations: 24
• "Experimental study of the behavior of the Bjorken sum at ver low Q2", A. Deur et al., Phys. Lett. B 825:136878, Feb. 2022. Citations: 38
• "Measurement of charged-pion production in deep-inelastic scattering off nuclei with the CLAS detector", CLAS Collaboration, S. Moran et al., Phys. Rev. C 105:015201, Jan. 2022. Citations: 29
• "Measurement of the EMC effect in light and heavy nuclei" (Editors' Suggestion), J. Arrington  et al., Phys. Rev. C 104:065203, Dec. 2021. Citations: 36
• "First Measurement of Timelike Compton Scattering", CLAS Collaboration, P. Chatagnon et al., Phys. Rev. Lett. 127:262501, Dec. 2021. Citations: 61
• "Improved Λp Elastic Scattering Cross Sections Between 0.9 and 2.0 GeV/c and Connections to the Neutron Star Equation of State", CLAS Collaboration, J. Rowley et al., Phys. Rev. Lett. 127:272303, Dec. 2021. Citations: 53
• "Electron-beam energy reconstruction for neutrino oscillation measurements", CLAS & e4ν Collaborations, M. Khachatryan et al., Nature 599:565-570, Nov. 2021. Citations: 75

Honors/Professional Activities

• SouthEastern Section of the American Physical Society (SESAPS) Executive Committee (EC) Chairline, "Vice Chair" (Jan. - Dec. 2024), "Chair-Elect" (Jan. - Dec. 2025)
• Miss. State U. Office of Research & Economic Development, "College of Arts & Sciences Faculty Research Award," 2021
• Jefferson Lab CLAS Collaboration, "Chair of the Nuclear Physics Working Group", Sept. 2019 - Aug. 2025
• SouthEastern Section of the American Physical Society (SESAPS), "Member-at-Large at the SESAPS Executive Committee", Jan. 2019 - Dec. 2022
• Jefferson Lab Users Organization (JLUO), "Outreach Director at the JLUO Board of Directors", June 2017 - June 2019
• Jefferson Lab/Hall-B, "Full membership of the CLAS Collaboration", December 2016
• Non Scientific Organization, "Top Female Professional", as a recognition of career accomplishments in physics research and education, October 2015