Results 11 to 20 of about 28,552 (197)
Speeding up MadGraph5_aMC@NLO [PDF]
The European Physical Journal C, 2021 AbstractIn this paper we will describe two new optimisations implemented in MadGraph5_aMC@NLO, both of which are designed to speed-up the computation of leading-order processes (for any model). First we implement a new method to evaluate the squared matrix element, dubbed helicity recycling, which results in factor of two speed-up.
Mattelaer, O., Ostrolenk, K.
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Computer Physics Communications, 2013 Based on the OPP technique and the HELAC framework, HELAC-1LOOP is a program that is capable of numerically evaluating QCD virtual corrections to scattering amplitudes. A detailed presentation of the algorithm is given, along with instructions to run the code and benchmark results.
Bevilacqua, G. +7 more
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NLO QCD calculations with HELAC-NLO [PDF]
Nuclear Physics B - Proceedings Supplements, 2010 7 pages, 4 figures. Presented at 10th DESY Workshop on Elementary Particle Theory: Loops and Legs in Quantum Field Theory, Worlitz, Germany, April 25-30 ...
Bevilacqua, G. +7 more
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NLO QCD corrections in Herwig++ with MC@NLO [PDF]
Journal of High Energy Physics, 2011 We present the calculations necessary to obtain next-to-leading order QCD precision with the Herwig++ event generator using the MC@NLO approach, and implement them for all the processes that were previously available from Fortran HERWIG with MC@NLO. We show a range of results comparing the two implementations.
Frixione, Stefano +3 more
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Matching NLO QCD computations with PYTHIA using MC@NLO [PDF]
Journal of High Energy Physics, 2010 We present the matching between a next-to-leading order computation in QCD and the PYTHIA parton shower Monte Carlo, according to the MC@NLO formalism. We study the case of initial-state radiation, and consider in particular single vector boson hadroproduction.
Torrielli, Paolo, Frixione, Stefano
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MINLO: multi-scale improved NLO [PDF]
Journal of High Energy Physics, 2012 Abstract In the present work we consider the assignment of the factorization and renormalization scales in hadron collider processes with associated jet production, at next-to-leading order (NLO) in perturbation theory. We propose a simple, definite prescription to this end, including Sudakov form factors to consistently account ...
Hamilton, Keith +2 more
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Statistical Characterization and Mitigation of NLOS Errors in UWB Localization Systems [PDF]
, 2011 In this paper some new experimental results about the statistical characterization of the non-line-of-sight (NLOS) bias affecting time-of-arrival (TOA) estimation in ultrawideband (UWB) wireless localization systems are illustrated.
Montorsi, Francesco +2 more
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Rooftop and indoor reception with transmit diversity applied to DVB-T networks: A long term measurement campaign [PDF]
, 2009 Although transmit Delay Diversity (DD) can provide a gain in indoor and other Non Line of Sight situations (NLOS), it can introduce degradation in rooftop reception. In fact, when the Ricean K factor of the channel is significantly high (e.g.
Arrinda, A +6 more
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Sensors, 2020 With the rapid development of information and communication technology, the wireless sensor network (WSN) has shown broad application prospects in a growing number of fields. The non-line-of-sight (NLOS) problem is the main challenge to WSN localization,
Long Cheng +3 more
doaj +1 more source
Factorisation and subtraction beyond NLO [PDF]
Journal of High Energy Physics, 2018 Abstract We provide a general method to construct local infrared subtraction counterterms for unresolved radiative contributions to differential cross sections, to any order in perturbation theory. We start from the factorised structure of virtual corrections to scattering amplitudes, where soft and collinear divergences are ...
Magnea, L. +5 more
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