Subtraction of the contribution in production at the one-loop level
arXiv:2411.07455 · doi:10.1007/JHEP01(2025)158
Abstract
The production contributes to the real corrections to the cross section. It would interfere with the top quark pair production, causing difficulties in a clear definition of the events. The subtraction of the contributions has been performed in the diagram removal or diagram subtraction schemes for the tree-level processes. However, these schemes rely on the ability to identify the double resonant diagrams and thus can not be extended to loop diagrams. We propose a new scheme to subtract the contributions by power expansion of the squared amplitude in the resonant region. In order to cancel the infra-red divergences of the loop amplitudes, a widely used method is to introduce the dipole counter-terms, an ingredient in calculations of the full next-to-leading order QCD corrections. In our scheme, these counter-terms are also power-expanded. As a proof of principle, we calculate the one-loop correction to the process, and present the invariant mass distribution of the system.
arXiv comment21 pages, 8 figures; v2: version published in JHEP
References in corpus (37)
- A General Algorithm for Calculating Jet Cross Sections in NLO QCD
- The total top quark pair production cross-section at hadron colliders through O(alpha_S^4)
- Single-top Wt-channel production matched with parton showers using the POWHEG method
- Two-loop soft anomalous dimensions for single top quark associated production with a W- or H-
- Single-top hadroproduction in association with a W boson
- FeynCalc 9.3: New features and improvements
- Dimensionally Regulated Pentagon Integrals
- The Dipole Formalism for Next-to-Leading Order QCD Calculations with Massive Partons
- OpenLoops 2
- Scalar one-loop integrals for QCD
- HATHOR for single top-quark production: Updated predictions and uncertainty estimates for single top-quark production in hadronic collisions
- Package-X 2.0: A Mathematica package for the analytic calculation of one-loop integrals
- Single top quark production at the Tevatron: threshold resummation and finite-order soft gluon corrections
- Next-to-leading order corrections to Wt production and decay
- Electroweak Radiative Corrections for Collider Physics
- An NLO+PS generator for and production and decay including non-resonant and interference effects
- Top-quark pair hadroproduction at next-to-next-to-leading order in QCD
- The t W- Mode of Single Top Production
- tWH associated production at the LHC
- Unstable particles in One Loop Calculations
- NNLO QCD Corrections to t-channel Single Top-Quark Production and Decay
- Effective theory approach to unstable particle production
- Single Top Quark at Future Hadron Colliders. Complete Signal and Background Study
- QCD Corrections to W Boson plus Heavy Quark Production at the Tevatron
- Higher-order corrections for production at high-energy hadron colliders
- Single-top-quark production in the -channel at NNLO
- NLO corrections to squark-squark production and decay at the LHC
- Automated simulations beyond the Standard Model: supersymmetry
- s-channel Single Top Quark Production and Decay at NNLO in QCD
- Analytic three-loop QCD corrections to top-quark and semileptonic decays
- Momentum-space threshold resummation in production at the LHC
- Analytic two-loop master integrals for production at hadron colliders: I
- A CT18 global PDF fit at the leading order in QCD
- One-loop squared amplitudes for hadronic production at next-to-next-to-leading order in QCD
- Analytic two-loop amplitudes for production: leading color and light fermion-loop contributions
- Analytic two-loop master integrals for production at hadron colliders. Part II
- Complete two-loop QCD amplitudes for production at hadron colliders