QCD Radiation in the Production of Heavy Colored Particles at the LHC

By Johan Alwall, S. Visscher, Fabio Maltoni. 2008

255 citations recorded by the source corpus.

We present a study of the effects of QCD radiation in the production of heavy colored states, employing inclusive multi-jet samples obtained by matching matrix elements and parton showers. We discuss several examples showing that matched samples are in general not only more accurate than a parton shower alone, but also sometimes indispensable to make reliable predictions of beyond the Standard Model signals.

Subfields: Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/977ad240f0624da77efea8e6d968d23cb5cc1afd

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

QCD matrix elements and truncated showers (2009, methodology): “The differences between the three merging prescriptions have been investigated using the example of W -production at the Tevatron and the LHC [18].”
NLO matrix elements and truncated showers (2010, methodology): “on colliders. An extension of the algorithm to account for hard QCD radiation in the production of heavy coloured states as they appear in various beyond the Standard Model scenarios was presented in [17]. The diﬀerences between the three merging prescriptions have been investigated using the exampl”
A comprehensive approach to new physics simulations (2009, methodology): “In each case, tools that are able to make predictions for wide classes of Beyond the Standard Model (BSM) physics, as well as those that help in building up an effective field theory from the data (such as the so called OSET method [2]), could be employed.”
Handbook of LHC Higgs Cross Sections: 1. Inclusive Observables (2011, methodology): “ soft limit for these quantities. Several merging schemes have been proposed, which include the CKKW scheme [324–326] and its improvements [330, 331], the MLM matching [323], and the kT-MLM variation [346]. The MLM schemes have been implemented in several matrix element codes such as ALPGEN, HELAC, ”
MadGraph 5: going beyond (2011, methodology): “Here again, signiﬁcant progress has been made in the development of merging algorithms, such as CKKW and MLM merging [36, 37, 38, 39, 40, 41, 42], and in their comparison [43, 44], with applications to SM [45, 39, 46] and to BSM [47] processes.”
Search for a standard model Higgs boson produced in association with a top-quark pair and decaying to bottom quarks using a matrix element method (2015, methodology): “For H = ttH, the factorisation scale μF entering the PDF is taken as half of the sum of twice the top-quark mass and the Higgs boson mass [20], while for H = tt + bb a dynamic scale is used equal to the quadratic sum of the transverse masses for all coloured partons [66].”
Soft triple-real radiation for Higgs production at N3LO (2013, unknown): “[15–35] See, for example, refs.”
The automated computation of tree-level and next-to-leading order differential cross sections, and their matching to parton shower simulations (2014, unknown): “[126, 148–151].”