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Leading-color fully differential two-loop soft corrections to QCD dipole showers

Dulat, Falko ; Höche, Stefan and Prestel, Stefan LU (2018) In Physical Review D 98(7).
Abstract

We compute the next-to-leading-order corrections to soft-gluon radiation differentially in the one-emission phase space. We show that their contribution to the evolution of color dipoles can be obtained in a modified subtraction scheme, such that both one- and two-emission terms are amenable to Monte Carlo integration. The two-loop cusp anomalous dimension is recovered naturally upon integration over the full phase space. We present two independent implementations of the new algorithm in the two event generators Pythia and Sherpa, and we compare the resulting fully differential simulation to the Catani-Marchesini-Webber (CMW) scheme.

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author
; and
publishing date
type
Contribution to journal
publication status
published
subject
in
Physical Review D
volume
98
issue
7
article number
074013
publisher
American Physical Society
external identifiers
  • scopus:85056167312
ISSN
2470-0010
DOI
10.1103/PhysRevD.98.074013
language
English
LU publication?
no
id
1f614359-b534-4e82-addf-9ec3b13f30b5
date added to LUP
2019-05-16 13:31:41
date last changed
2020-12-29 03:56:29
@article{1f614359-b534-4e82-addf-9ec3b13f30b5,
  abstract     = {<p>We compute the next-to-leading-order corrections to soft-gluon radiation differentially in the one-emission phase space. We show that their contribution to the evolution of color dipoles can be obtained in a modified subtraction scheme, such that both one- and two-emission terms are amenable to Monte Carlo integration. The two-loop cusp anomalous dimension is recovered naturally upon integration over the full phase space. We present two independent implementations of the new algorithm in the two event generators Pythia and Sherpa, and we compare the resulting fully differential simulation to the Catani-Marchesini-Webber (CMW) scheme.</p>},
  author       = {Dulat, Falko and Höche, Stefan and Prestel, Stefan},
  issn         = {2470-0010},
  language     = {eng},
  month        = {10},
  number       = {7},
  publisher    = {American Physical Society},
  series       = {Physical Review D},
  title        = {Leading-color fully differential two-loop soft corrections to QCD dipole showers},
  url          = {http://dx.doi.org/10.1103/PhysRevD.98.074013},
  doi          = {10.1103/PhysRevD.98.074013},
  volume       = {98},
  year         = {2018},
}