The midpoint between dipole and parton showers

By S. Höche, Stefan Prestel. The European Physical Journal C, 2015

157 citations recorded by the source corpus.

We present a new parton-shower algorithm. Borrowing from the basic ideas of dipole cascades, the evolution variable is judiciously chosen as the transverse momentum in the soft limit. This leads to a very simple analytic structure of the evolution. A weighting algorithm is implemented that allows one to consistently treat potentially negative values of the splitting functions and the parton distributions. We provide two independent, publicly available implementations for the two event generators Pythia and Sherpa.

Subfields: Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/bf2472c1168872ef6dff13c1033e80953578d0d4

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

In Nuclear and High Energy Physics

Citations in the corpus

Jet substructure at the Large Hadron Collider: A review of recent advances in theory and machine learning (2017, background): “ages and disadvantages, and emphasizes dierent physics aspects. Examples include Pythia [142,143,144], a pT-ordered dipole shower; Vincia [145,146,147], Sherpa [148,149], Ariadne [150,151], and DIRE [152], dipole-antenna showers; Herwig++/Herwig7 [153,154,155,156,157,158], an angular-ordered dipole ”
Analytic boosted boson discrimination (2015, methodology): “ors (for reviews, see e.g. [124{128]). Some examples include Pythia [97,98], a p T-ordered dipole shower with a veto on wide angle radiation; Vincia [85{90], Sherpa [129,130], Ariadne [131], and Dire [132], dipole-antenna showers; and Herwig++ [133{136], an angular-ordered dipole shower.12 As repres”
Les Houches 2017: Physics at TeV Colliders Standard Model Working Group Report (2017, methodology): “Direct numerical evaluation remains a powerful technique.”
Event generation with Sherpa 2.2 (2019, methodology): “Within the framework of DIRE, it has been shown that triple-collinear and double-soft NLO corrections to the splitting functions can consistently be included in a parton shower [20, 114].”
Les Houches 2015: Physics at TeV Colliders Standard Model Working Group Report (2016, methodology): “2.0, comprises two parton shower algorithms: Csshower [373] and Dire [443].”
Systematics of quark/gluon tagging (2017, background): “0 [46] (with cluster hadronization performed by Sherpa).”
Higgs Physics at the HL-LHC and HE-LHC (2019, background): “Theoretical predictions for the mass shift are under good control, with the interference being known to NLO in QCD [480, 483, 484] and matched to parton shower [161, 485].”