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Second order splitting functions and infrared safe cross sections in N = 4 SYM theory

Banerjee, Pulak; Chakraborty, Amlan; Dhani, Prasanna K.; Ravindran, V.; Seth, Satyajit

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Authors

Pulak Banerjee

Amlan Chakraborty

Prasanna K. Dhani

V. Ravindran

Satyajit Seth



Abstract

We report our findings on the perturbative structure of N = 4 supersymmetric Yang-Mills (SYM) theory in the infrared sector by computing inclusive scattering cross sections of on-shell particles. We use half-BPS, energy-momentum tensor and Konishi operators to produce singlet states in the scattering processes to probe the soft and the collinear properties of the cross sections. By appropriately defining the infrared safe observables, we obtain collinear splitting functions up to second order in the perturbation theory. The splitting functions and the infrared finite cross sections demonstrate several interesting connections with those in the perturbative QCD. We also determine the process independent soft distribution function up to third order in the perturbation theory and show that it is universal i.e. independent of the operators as well as the external states. Interestingly, the soft distribution function in N = 4 SYM theory matches exactly with the leading transcendental part of the corresponding one in the QCD. This enables us to predict the third order soft plus virtual cross section for the production of the on-shell singlet states.

Citation

Banerjee, P., Chakraborty, A., Dhani, P. K., Ravindran, V., & Seth, S. (2019). Second order splitting functions and infrared safe cross sections in N = 4 SYM theory. Journal of High Energy Physics, 2019(4), Article 58. https://doi.org/10.1007/jhep04%282019%29058

Journal Article Type Article
Acceptance Date Mar 26, 2019
Online Publication Date Apr 8, 2019
Publication Date Apr 30, 2019
Deposit Date May 1, 2019
Publicly Available Date Mar 28, 2024
Journal Journal of High Energy Physics
Print ISSN 1126-6708
Publisher Scuola Internazionale Superiore di Studi Avanzati (SISSA)
Peer Reviewed Peer Reviewed
Volume 2019
Issue 4
Article Number 58
DOI https://doi.org/10.1007/jhep04%282019%29058

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Publisher Licence URL
http://creativecommons.org/licenses/by/4.0/

Copyright Statement
This article is distributed under the terms of the Creative Commons Attribution License (CC-BY 4.0), which permits any use, distribution and reproduction in any medium, provided the original author(s) and source are credited.





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