Tobias Neumann

Department of Physics, Room 203

3215 Daniel Ave.

Southern Methodist University

Dallas, Texas 75205

I am a theoretical physicist and my research aims at gaining novel insight into the fundamental laws of nature through perturbative precision calculations across the scope of particle collider programs.

My research is at the interface of the technical theory community and the experimental analyses, and extends from higher-order multi-loop calculations to Monte-Carlo event generators relevant to experimental analyses, to lattice-matching calculations for crucial input parameters like PDFs. The use of large scale numerical and computer algebra methods is part of my daily work.

Find out more about the research in my group, our publications, outreach, and opportunities and ‘join the group’ to contribute at the undergraduate to graduate level!

news

Oct 05, 2026	New paper with Christopher Monahan on arXiv:2609.40205: we compute one-loop quark and gluon quasi- and pseudo-distributions and their matching to light-cone PDFs. We show that the $\lvert x \rvert > 1$ region of quasi-PDFs carries no independent non-perturbative information, and we resolve a discrepancy in the gluon matching kernel that makes the extracted gluon PDF systematically harder than previously reported.
Feb 18, 2026	I am excited to welcome Andreas Rapakoulias (U. Regensburg) and Jyotirmoy Roy (Duke) to the group this fall! Andreas brings deep expertise in analytic multi-loop methods, while Roy joins us as a specialist in EFT frameworks and factorization.
Nov 17, 2025	Interested in shaping my new group as a postdoctoral researcher in high-energy theory? The priority consideration date for applications is December 15. More information on InspireHEP, apply on Interfolio!

selected publications

Third order QCD predictions for fiducial W-boson production

John Campbell and Tobias Neumann

JHEP 11 (2023) 127, arXiv:2308.15382

DOI arXiv Bib

@article{Campbell:2023lcy,
  author = {Campbell, John and Neumann, Tobias},
  title = {{Third order QCD predictions for fiducial W-boson production}},
  archiveprefix = {arXiv},
  primaryclass = {hep-ph},
  reportnumber = {FERMILAB-PUB-23-463-T},
  doi = {10.1007/JHEP11(2023)127},
  journal = {JHEP},
  volume = {11},
  pages = {127},
  year = {2023},
}

Fiducial Drell-Yan production at the LHC improved by transverse-momentum resummation at N⁴LLₚ+N³LO

Tobias Neumann and John Campbell

Phys. Rev. D 107 (2023) L011506, arXiv:2207.07056

DOI arXiv Bib

@article{Neumann:2022lft,
  author = {Neumann, Tobias and Campbell, John},
  title = {Fiducial Drell-Yan production at the LHC improved by transverse-momentum resummation at N⁴LLₚ+N³LO},
  archiveprefix = {arXiv},
  primaryclass = {hep-ph},
  reportnumber = {FERMILAB-PUB-22-528-T},
  doi = {10.1103/PhysRevD.107.L011506},
  journal = {Phys. Rev. D},
  volume = {107},
  number = {1},
  pages = {L011506},
  year = {2023},
}

Projection-to-Born-improved subtractions at NNLO

John Campbell, Tobias Neumann, and Gherardo Vita

JHEP 05 (2025) 172, arXiv:2408.05265

DOI arXiv Bib

@article{Campbell:2024hjq,
  author = {Campbell, John and Neumann, Tobias and Vita, Gherardo},
  title = {{Projection-to-Born-improved subtractions at NNLO}},
  archiveprefix = {arXiv},
  primaryclass = {hep-ph},
  reportnumber = {CERN-TH-2024-102, FERMILAB-PUB-24-0402-T},
  doi = {10.1007/JHEP05(2025)172},
  journal = {JHEP},
  volume = {05},
  pages = {172},
  year = {2025},
}