Conveners
Parallel 7
- Ayres Freitas (University of Pittsburgh)
Parallel 7
- Ayres Freitas (University of Pittsburgh)
We present the parton shower algorithm ALARIC that extends the coherent branching formalism and allows for a direct analytic proof of NLL accuracy by means of a suitable kinematics mapping and choice of evolution variable. Final-state and initial-state evolution are treated in a unified manner, and the matching to NLO calculations is straightforward.
We discuss the general structure of the...
To do experimentally clean measurements, one of the proposed strategies is to use track-based observables, which means working exclusively with final-state charged hadrons (tracks). A field-theoretic framework, the so-called track function formalism, for calculating track-based observables has been introduced. Although the case of most experimental interest is tracks, this framework is based...
The reduction of Feynman integrals to a basis of master integrals plays a crucial role for many high-precision calculations and Kira is one of the leading tools for this task. In this talk I will discuss the new features and improvements we are currently developing for the next release of Kira.
We report on a new version of the FeynCalc package (arXiv:2312.14089) that features a large collection of useful routines for multiloop calculations. Those include topology identification and minimization, optimized tensor reduction, detection of equivalent or scaleless loop integrals and construction of Feynman parametric as well as graph representations for master integrals. In addition to...
The calculation of phase-space integrals via reverse unitarity and differential equations often faces bottlenecks in fixing boundary conditions. In this talk we present a general and analytical method to derive boundary conditions for phase-space master integrals. Our strategy is based on the auxiliary mass flow method (AMFlow), but it is purely analytic. It is suited for the calculation of...
The development of a fully automated tool for the numerical calculation
of NNLO corrections to scattering amplitudes is a highly desirable goal for the LHC era.
In our approach, D-dimensional two-loop amplitudes are decomposed into Feynman integrals with four-dimensional numerators as well as (D-4)-dimensional remainders, which can contribute to the finite result through the interaction with...
