papers/talks
Recent Papers
For a full list of publications, please visit my page on INSPIRE-HEP.
*Indicates undergraduate student
*M. Harris, *J. Marsh, D. Pitonyak, A. Prokudin, *J. Putnam, D. Rein and M. Schlegel, “Transverse single-spin asymmetries in γSIDIS as a direct probe of quark-gluon-quark longitudinal momentum structure,” [arXiv:2505.02711 [hep-ph]], submitted to Physics Letters B.
D. Adamiak, N. Baldonado, Y. V. Kovchegov, M. Li, W. Melnitchouk, D. Pitonyak, N. Sato, M. D. Sievert, A. Tarasov and Y. Tawabutr, “First study of polarized proton-proton scattering with small-x helicity evolution,” [arXiv:2503.21006 [hep-ph]], submitted to Physical Review D.
D. Pitonyak, C. Cocuzza, A. Metz, A. Prokudin and N. Sato, “Comment on “QCD factorization with multihadron fragmentation functions”,” [arXiv:2502.15817 [hep-ph]], submitted to Physical Review D.
*S. Fitzgibbons, *M. Malda, *J. Marsh, D. Pitonyak and *P. Smith, “Updated numerical study of transverse single-spin asymmetries in single-inclusive pion production from lepton-nucleon collisions,” Phys. Lett. B 852, 138606 (2024) [arXiv: 2401.02391 [hep-ph]].
C. Cocuzza, A. Metz, D. Pitonyak, A. Prokudin, N. Sato and R. Seidl, “Transversity distributions and tensor charges of the nucleon: extraction from dihadron production and their universal nature,” Phys. Rev. Lett. 132, 091901 (2024) [arXiv:2306.12998 [hep-ph]].
C. Cocuzza, A. Metz, D. Pitonyak, A. Prokudin, N. Sato and R. Seidl, “First Simultaneous Global QCD Analysis of Dihadron Fragmentation Functions and Transversity Parton Distribution Functions,” Phys. Rev. D 109, 034024 (2024) [arXiv:2308.14857 [hep-ph]].
D. Pitonyak, C. Cocuzza, A. Metz, A. Prokudin and N. Sato,“Number density interpretation of dihadron fragmentation functions,” Phys. Rev. Lett. 132, 011902 (2024) [arXiv:2305.11995 [hep-ph]].
D. Adamiak, N. Baldonado, Y. V. Kovchegov, W. Melnitchouk, D. Pitonyak, N. Sato, M. D. Sievert, A. Tarasov and Y. Tawabutr, “Global analysis of polarized DIS & SIDIS data with improved small-x helicity evolution,” Phys. Rev. D 108, 114007 (2023) [arXiv:2308.07461 [hep-ph]].
P. C. Barry, L. Gamberg, W. Melnitchouk, E. Moffat, D. Pitonyak, A. Prokudin and N. Sato, “Tomography of pions and protons via transverse momentum dependent distributions,” Phys. Rev. D 108, L091504 (2023) [arXiv:2302.01192 [hep-ph]].
*B. Bauer, D. Pitonyak and *C. Shay, “Numerical study of the twist-3 asymmetry ALT in single-inclusive electron-nucleon and proton-proton collisions,” Phys. Rev. D 107, 014013 (2023) [arXiv:2210.14334 [hep-ph]].
L. Gamberg, *M. Malda, *J. A. Miller, D. Pitonyak, A. Prokudin and N. Sato, “Updated QCD global analysis of single transverse-spin asymmetries: Extracting H~, and the role of the Soffer bound and lattice QCD,” Phys. Rev. D 106, 034014 (2022) [arXiv:2205.00999 [hep-ph]].
M. Boglione, M. Diefenthaler, S. Dolan, L. Gamberg, W. Melnitchouk, D. Pitonyak, A. Prokudin, N. Sato and Z. Scalyer, “New tool for kinematic regime estimation in semi-inclusive deep-inelastic scattering,” JHEP 2204, 084 (2022) [arXiv:2201.12197 [hep-ph]].
S. Bhattacharya, Z. B. Kang, A. Metz, G. Penn and D. Pitonyak, “First global QCD analysis of the TMD g1T from semi-inclusive DIS data,” Phys. Rev. D 105, 034007 (2022) [arXiv:2110.10253 [hep-ph]].
D. Adamiak, Y. V. Kovchegov, W. Melnitchouk, D. Pitonyak, N. Sato and M. D. Sievert, “First analysis of world polarized DIS data with small-x helicity evolution,” Phys. Rev. D 104, L031501 (2021) [arXiv:2102.06159 [hep-ph]].
L. Gamberg, Z. B. Kang, D. Pitonyak, A. Prokudin, N. Sato and R. Seidl, “Electron-Ion Collider impact study on the tensor charge of the nucleon,” Phys. Lett. B 816, 136255 (2021) [arXiv:2101.06200 [hep-ph]].
*J. Cammarota, L. Gamberg, Z. B. Kang, *J. A. Miller, D. Pitonyak, A. Prokudin, T. C. Rogers and N. Sato, “Origin of single transverse-spin asymmetries in high-energy collisions,” Phys. Rev. D 102, 054002 (2020) [arXiv:2002.08384 [hep-ph]].
L. Gamberg, Z. B. Kang, D. Pitonyak, M. Schlegel and S. Yoshida, “Polarized hyperon production in single-inclusive electron-positron annihilation at next-to-leading order,” JHEP 1901, 111 (2019) [arXiv:1810.08645 [hep-ph]].
recent talks
Presented by D. Pitonyak unless otherwise stated
*Indicates undergraduate student
“Latest Developments in the Theory of Multi-hadron Fragmentation Functions” Invited talk at the QCD Evolution Workshop, May 19, 2025, Newport News, VA.
“Global QCD Analysis of Proton’s Transverse Spin Structure through TMDs and DiFFs,” Invited talk at the APS Group on Hadronic Physics Workshop, Mar. 16, 2025, Anaheim, CA (slides by C. Cocuzza).
“Transverse Single-Spin Asymmetries in the SIDIS Production of Photons: Modeling Multi-Parton Correlations in the Nucleon,” Contributed talk at the APS Group on Hadronic Physics Workshop, Mar. 16, 2025, Anaheim, CA. Presented by *Michael Harris.
“Transverse Single-Spin Asymmetries in Inclusive DIS and SIDIS Production of Photons: Numerical Predictions using Models for Multi-Parton Correlators,” Contributed poster at the APS Global Summit, Mar. 19, 2025. Presented by *Jack Putnam.
“Transversity from the World Data,” Invited talk at the APS Division of Nuclear Physics Fall Meeting, Oct. 9, 2024, Boston, MA.
“Updated Numerical Study of Transverse Single-Spin Asymmetries in Single-Inclusive Pion Production from Lepton-Nucleon Collisions,” Contributed talk at the APS Division of Nuclear Physics Fall Meeting, Oct. 9, 2024, Boston, MA. Presented by *Jacob Marsh.
“Transverse Single-Spin Asymmetries in Inclusive DIS and SIDIS Production of Photons: Numerical Predictions using Models for Multi-Parton Correlators,” Contributed talk at the Conference Experience for Undergraduates at the APS Division of Nuclear Physics Fall Meeting, Oct. 10, 2024, Boston, MA. Presented by *Michael Harris.
“Global Analysis of TSSAs: Transversity, Nucleon Tensor Charges, and the Role of Lattice QCD,” Invited talk the Institute for Nuclear Theory Workshop on Inverse Problems and Uncertainty Quantification in Nuclear Physics, Jul. 9, 2024, Seattle, WA.
“Global Analysis of TSSAs: Transversity, Nucleon Tensor Charges, and Opportunities for SoLID,” Invited talk at SoLID: Opportunities and Challenges of Nuclear Physics at the Luminosity Frontier, Jun. 18, 2024, Lemont, IL.
“Transversity from Single-Hadron TSSAs and Dihadron Fragmentation Theory Developments,” Invited talk at the 7th International Workshop on Transverse Polarization Phenomena, Jun. 3, 2024, remote.
“Transverse Single-Spin Asymmetries and the Universal Nature of Transversity PDFs and Nucleon Tensor Charges,” Invited talk at the QCD Evolution Workshop, May 30, 2024, Pavia, Italy.
“Transversity PDFs from Single-Hadron and Dihadron Observables: Current Status and Prospects for the EIC,” Invited talk at the Jefferson Lab EIC Meeting, May 24, 2024, remote.
“The Universal Nature of Transversity PDFs and the Tensor Charges of the Nucleon,” Contributed talk at the APS April Meeting, Apr. 3, 2024, Sacramento, CA.
“Numerical Computation of Left-Right Asymmetries in Single-Inclusive Pion Production from Lepton-Nucleon Collisions,” Contributed talk at the APS April Meeting, Apr. 3, 2024, Sacramento, CA. Presented by *Penn Smith.
“Transverse Single-Spin Asymmetries in Single-Inclusive Pion Production from Lepton-Nucleon Collisions with Unpolarized Next-to-Leading Order Corrections,” Contributed poster at the APS April Meeting, Apr. 6, 2024, Sacramento, CA. Presented by *Sophia Fitzgibbons and *Jacob Marsh.
“Transverse Single-Spin Asymmetries in Single-Inclusive Pion Production from Lepton-Nucleon Collisions with Unpolarized Next-to-Leading Order Corrections,” Contributed poster at the Conference for Undergraduate Women in Physics, Jan. 20, 2024, Philadelphia, PA. Presented by *Sophia Fitzgibbons.
“Transverse Single-Spin Asymmetries in Single-Inclusive Pion Production from Lepton-Nucleon Collisions with Unpolarized Next-to-Leading Order Corrections,” Contributed poster at the 25th International Spin Physics Symposium, Sept. 28, 2023, Durham, NC. Presented by *Penn Smith.
“QCD Global Analysis of Single-Hadron Fragmentation TSSAs & New Theory Developments for Dihadron Fragmentation,” Invited talk at the Center for Frontiers in Nuclear Science Workshop on TMDs and Synergy with Lattice QCD, June 22, 2023.
“New Framework for the Analysis of Dihadron Fragmentation,” Invited talk at Jefferson Lab’s Theory Group Seminar, June 7, 2023, remote.
“QCD Global Analyses of Transverse Single-Spin Asymmetries: Single Hadron and Dihadron Observables,” Contributed talk at the QCD Evolution Workshop, May 22, 2023, Orsay, France.
“Extracting the Proton’s Tensor Charge from QCD Phenomenology,” Invited plenary talk at the APS Group on Hadronic Physics Meeting, Apr. 12, 2023, Minneapolis, MN.
“Numerical Study of Twist-3 Longitudinal-Transverse Double-Spin Asymmetries: a Probe of Quark- Gluon-Quark Correlations in Hadrons,” Contributed talk at the APS Group on Hadronic Physics Meeting, Apr. 14, 2023, Minneapolis, MN. Presented by *Brandon Bauer.
“Numerical Study of Single-Inclusive Longitudinal-Transverse Double-Spin Asymmetries in Electron-Nucleon and Proton-Proton Collisions,” Contributed poster at the APS April Meeting, Apr. 15, 2023, Minneapolis, MN. Presented by *Cody Shay.
“Numerical Study of Single-Inclusive Longitudinal-Transverse Double-Spin Asymmetries in Electron-Proton and Proton-Proton Collisions,” Contributed poster at the Conference Experience for Undergraduates at the APS Division of Nuclear Physics Fall Meeting, Oct. 28, 2022, New Orleans, LA. Presented by *Brandon Bauer.
“Updated QCD Global Analysis of SSAs: H~, the Soffer Bound, and Lattice gT,” Invited talk at the 6th International Workshop on Transverse Polarization Phenomena, May 24, 2022, remote.
“Updated QCD Global Analysis of SSAs: New Experimental Data and Constraints,” Invited talk at the QCD Evolution Workshop, May 11, 2022, Charlottesville, VA.
“Updated QCD Global Analysis of Single Transverse-Spin Asymmetries with Additional Constraints from Experimental Data and Lattice QCD,” Contributed talk at the APS April Meeting, Apr. 9, 2022, New York, NY. Presented by *Michel Malda.
“Analysis of the cos2φ and cosφ Modulations in Semi-Inclusive Deep-Inelastic Scatterring,” Contributed talk at the APS April Meeting, Apr. 9, 2022, New York, NY. Presented by *Ben Gordon.
“First global QCD analysis of the TMD g1T from semi-inclusive DIS data,” Invited seminar at the COMPASS Analysis Meeting, Jan. 20, 2022, remote.
“Multi-Parton Fragmentation Functions in a QCD Global Analysis of Single Transverse-Spin Asymmetries,” Invited talk at the Institute for Nuclear Theory Workshop on Fragmentation Functions, Nov. 2, 2021, remote.
“Small-x Helicity Evolution and the Proton Spin Puzzle,” Invited talk at the 24th International Spin Symposium, Oct. 22, 2021, remote.
“Status of Phenomenology for the Transversity Distribution,” Invited talk at the 5th Workshop on the QCD Structure of the Nucleon, Oct. 4, 2021, remote.