B2a Automated calculations in Soft-Collinear Effective Theory

Principal Investigator
Prof. Guido Bell University of Siegen

Subject

This project aims at streamlining calculations in Soft-Collinear Effective Theory (SCET). Specifically, we envisage to develop automated codes for the calculation of soft, jet and beam functions to next-to-next-to-leading order in the strong-coupling expansion, and we will apply them to compute various key ingredients that are needed to extend SCET resummations for collider observables to higher logarithmic accuracy. Likewise we will compute counterterms for NNLO slicing techniques, and we plan to interface our codes with existing libraries to enable automated resummations based on effective-field-theory methods.

Topics

  1. Soft functions
    • Extension of SoftSERVE to processes with aribtrary number of jets
    • Development of a similar code for top-quark related soft functions
  2. Development of an automated resummation code for e+e− observables ◦ Comparison to the CAESAR/ARES approach
    • Extension to hadron-collider observables
  3. SCET subtractions
    • $N$ -jettiness subtraction for processes with more than one jet
    • $q_\perp$ subtraction for (associated) tt ̄ production
    • Studies to improve performance of NNLO subtraction/slicing techniques
P3H-24-064
Title: NNLO beam functions for angularity distributions
Type: Paper
Authors: Guido Bell, Kevin Brune, Goutam Das, Marcel Wald
arXiv: 2409.13348
Info:
P3H-24-056
Title: Next-to-soft threshold effects on Higgs boson production via bottom quark annihilation
Type: Paper
Authors: G. Das, A. Sankar
arXiv: 2409.01553
Info:
P3H-24-043
Title: New multiloop capabilities of FeynCalc 10
Type: Proceedings
Authors: Vladyslav Shtabovenko
arXiv: 2407.01447
Info:
P3H-24-035
Title: Revisiting strong-coupling determinations from e+e− event shapes
Type: Proceedings
Authors: G. Bell, C. Lee, Y. Makris, J. Talbert, B. Yan
arXiv: 2406.07916
Info: Contribution to the 2024 QCD session of the 58th Rencontres de Moriond.
P3H-24-004
Title: The NNLO gluon beam function for jet veto resummation
Type: Paper
Authors: G. Bell, K. Brune, G. Das, D. Shao, M. Wald
arXiv: 2403.15247
Info: Published in JHEP 07 (2024) 014
P3H-23-098
Title: N3LL resummation of one-jettiness for Z-boson plus jet production at hadron colliders
Type: Paper
Authors: S. Alioli, G. Bell, G. Billis, A. Broggio, B. Dehnadi, M. A. Lim, G. Marinelli, R. Nagar, D. Napoletano,R. Rahn
arXiv: 2312.06496
Info: Published in Phys.Rev.D 109 (2024) 9, 094009
P3H-23-089
Title: FeynCalc 10: Do multiloop integrals dream of computer codes?
Type: Paper
Authors: Vladyslav Shtabovenko
arXiv: 2312.14089
Info:
P3H-23-079
Title: Effects of Renormalon Scheme and Perturbative Scale Choices on Determinations of the Strong Coupling from e+e- Event Shapes
Type: Paper
Authors: G. Bell, C. Lee, Y. Makris, J. Talbert, B. Yan
arXiv: 2311.03990
Info: Published in Phys.Rev.D 109 (2024) 9, 094008
P3H-22-065
Title: The NNLO soft function for N-jettiness in hadronic collisions
Type: Paper
Authors: Guido Bell, Bahman Dehnadi, Tobias Mohrmann, Rudi Rahn
arXiv: 2312.11626
Info: Published in JHEP 07 (2024) 077