Header

UZH-Logo

Maintenance Infos

Identified hadrons in antenna subtraction at NNLO


Stagnitto, Giovanni; Gehrmann, Thomas (2022). Identified hadrons in antenna subtraction at NNLO. In: Loops and Legs in Quantum Field Theory, Ettal, Germany, 25 April 2022 - 30 April 2022.

Abstract

Processes with identified hadrons require the introduction of fragmentation functions to describe the hadronisation of a quark or a gluon into the observed hadron particle. Such identified particles in the final state make the treatment of infrared divergences more subtle, because of additional collinear divergences to be handled. We extend the antenna subtraction method to include hadron fragmentation processes up to next-to-next-to-leading order (NNLO) in QCD in e+e− collisions. To this end, we introduce new double-real and real-virtual fragmentation antenna functions in the final-final kinematics, with associated phase space mappings. These antenna functions are integrated over the relevant phase spaces, retaining their dependence on the momentum fraction of the fragmenting parton.

Abstract

Processes with identified hadrons require the introduction of fragmentation functions to describe the hadronisation of a quark or a gluon into the observed hadron particle. Such identified particles in the final state make the treatment of infrared divergences more subtle, because of additional collinear divergences to be handled. We extend the antenna subtraction method to include hadron fragmentation processes up to next-to-next-to-leading order (NNLO) in QCD in e+e− collisions. To this end, we introduce new double-real and real-virtual fragmentation antenna functions in the final-final kinematics, with associated phase space mappings. These antenna functions are integrated over the relevant phase spaces, retaining their dependence on the momentum fraction of the fragmenting parton.

Statistics

Citations

Dimensions.ai Metrics

Altmetrics

Downloads

6 downloads since deposited on 14 Feb 2023
2 downloads since 12 months
Detailed statistics

Additional indexing

Item Type:Conference or Workshop Item (Paper), not_refereed, original work
Communities & Collections:07 Faculty of Science > Physics Institute
Dewey Decimal Classification:530 Physics
Scopus Subject Areas:Health Sciences > Multidisciplinary
Language:English
Event End Date:30 April 2022
Deposited On:14 Feb 2023 16:34
Last Modified:18 Feb 2023 15:35
OA Status:Hybrid
Publisher DOI:https://doi.org/10.22323/1.416.0060
  • Content: Published Version
  • Language: English