47 citations · 237 across the 22 of their papers we have counts for
26 papers
The double-real part of NNLO matching with logarithmically accurate showers for collisions
Melissa van Beekveld, Keith Hamilton, Gavin P. Salam +3
We discuss key principles that need to be taken into account for higher-order matching to retain the logarithmic accuracy of parton showers, specifically in a context where the mat…
A Powheg generator for - and -channel single-top production and decay including non-resonant effects
Melissa van Beekveld, Robin van Bijleveld, Silvia Ferrario Ravasio +2
We present a next-to-leading order + parton shower generator for - and -channel single-top production in hadron colliders, for a leptonically-decaying top, including off-shel…
NNLL resummation for the production of four top quarks
Melissa van Beekveld, Anna Kulesza, Michele Lupattelli +1
Four-top production is one of the rarest processes of the Standard Model observable at the Large Hadron Collider, offering sensitivity to the top Yukawa coupling, Higgs width, and…
A generalised- jet algorithm for Deep Inelastic Scattering
Melissa van Beekveld, Silvia Ferrario Ravasio, Alexander Karlberg +1
We introduce an inclusive generalised- jet algorithm for Deep Inelastic Scattering, defined in the Breit frame and implemented in fjcontrib. The family of algorithms is govern…
Logarithmically-accurate showers with massive quarks
Melissa van Beekveld, Silvia Ferrario Ravasio, Alba Soto-Ontoso +2
We formulate PanScales final-state showers that account for quark masses and achieve next-to-leading logarithmic accuracy, while preserving the original accuracy of the showers for…
The Monte Carlo Ecosystem in High-Energy Physics: A Primer
Melissa van Beekveld, Enrico Bothmann, Andy Buckley +3
Monte Carlo event generators are the central interface between theoretical calculations and experimental measurements in collider physics. Over several decades, a comprehensive and…
A Phenomenological Analysis of LHC Neutrino Scattering at NLO Accuracy Matched to Parton Showers
Melissa van Beekveld, Silvia Ferrario Ravasio, Eva Groenendijk +3
We perform a detailed phenomenological study of high-energy neutrino deep inelastic scattering (DIS) focused on LHC far-forward experiments such as FASER and SND@LHC. To this ai…
A new standard for the logarithmic accuracy of parton showers
Melissa van Beekveld, Mrinal Dasgupta, Basem Kamal El-Menoufi +9
We report on a major milestone in the construction of logarithmically accurate final-state parton showers, achieving next-to-next-to-leading-logarithmic (NNLL) accuracy for the wid…
The impact of CP-violating phases on DM observables in the cpMSSM
Melissa van Beekveld, Wim Beenakker, Jochem Kip +2
In this paper we examine the effect of adding CP-violating phases to the pMSSM on the Dark-Matter (DM) direct-detection cross sections, the velocity-weighted annihilation cross sec…
Two-loop anomalous dimensions for small- jet versus hadronic fragmentation functions
Melissa van Beekveld, Mrinal Dasgupta, Basem Kamal El-Menoufi +3
We study the collinear fragmentation of highly energetic jets defined with a small jet radius. In particular, we investigate how the corresponding fragmentation functions differ fr…
Introduction to the PanScales framework, version 0.1
Melissa van Beekveld, Mrinal Dasgupta, Basem Kamal El-Menoufi +11
In this article, we document version 0.1 of the PanScales code for parton shower simulations. With the help of a few examples, we discuss basic usage of the code, including tests o…
Exponentiation of soft quark effects from the replica trick
Melissa van Beekveld, Leonardo Vernazza, Chris D. White
In this paper, we show that multiple maximally soft (anti-)quark and gluon emissions exponentiate at the level of either the amplitude or cross-section. We first show that such emi…
Next-to-soft radiation from a different angle
Melissa van Beekveld, Abhinava Danish, Eric Laenen +3
Soft and collinear radiation in collider processes can be described in a universal way, that is independent of the underlying process. Recent years have seen a number of approaches…
Collinear fragmentation at NNLL: generating functionals, groomed correlators and angularities
Melissa van Beekveld, Mrinal Dasgupta, Basem Kamal El-Menoufi +2
Jet calculus offers a unique mathematical technique to bridge the area of QCD resummation with Monte Carlo parton showers. With the ultimate goal of constructing next-to-next-to-le…
Next-to-leading power corrections to the event shape variables
Neelima Agarwal, Melissa van Beekveld, Eric Laenen +3
We investigate the origin of next-to-leading power corrections to the event shapes thrust and -parameter, at next-to-leading order. For both event shapes we trace the origin of…
Simple, but not simplified: A new approach for optimising beyond-Standard Model physics searches at the Large Hadron Collider
Melissa van Beekveld, Philip Grace, Anders Kvellestad +2
Searches for beyond-Standard Model physics scenarios, such as supersymmetry (SUSY), at the Large Hadron Collider (LHC) are frequently optimised on simplified models. After assuming…
Next-to-leading-logarithmic PanScales showers for Deep Inelastic Scattering and Vector Boson Fusion
Melissa van Beekveld, Silvia Ferrario Ravasio
We introduce the first family of parton showers that achieve next-to-leading logarithmic (NLL) accuracy for processes involving a -channel exchange of a colour-singlet, and embe…
Threshold resummation for the production of four top quarks at the LHC
Melissa van Beekveld, Anna Kulesza, Laura Moreno Valero
We compute the total cross section for production at next-to-leading logarithmic (NLL) accuracy. This is the first time resummation is performed for a…
PanScales showers for hadron collisions: all-order validation
Melissa van Beekveld, Silvia Ferrario Ravasio, Keith Hamilton +4
We carry out extensive tests of the next-to-leading logarithmic (NLL) accuracy of the PanScales parton showers, as introduced recently for colour-singlet production in hadron colli…
Non-Standard Neutrino Spectra From Annihilating Neutralino Dark Matter
Melissa van Beekveld, Wim Beenakker, Sascha Caron +3
Neutrino telescope experiments are rapidly becoming more competitive in indirect detection searches for dark matter. Neutrino signals arising from dark matter annihilations are typ…
PanScales parton showers for hadron collisions: formulation and fixed-order studies
Melissa van Beekveld, Silvia Ferrario Ravasio, Gavin P. Salam +3
We formulate PanScales parton showers for hadron collisions so as to achieve next-to-leading logarithmic (NLL) accuracy across a broad set of observables. We do so specifically for…
Threshold resummation of new partonic channels at next-to-leading power
Melissa van Beekveld, Leonardo Vernazza, Chris D. White
Collider observables involving heavy particles are subject to large logarithmic terms near threshold, which must be summed to all orders in perturbation theory to obtain sensible r…
The role of the threshold variable in soft-gluon resummation of the production process
Melissa van Beekveld, Wim Beenakker
We study the role of the threshold variable in soft-gluon threshold resummation. We focus on the computation of the resummed total cross section, the final-state invariant-mass dis…
Supersymmetry with Dark Matter is still natural
Melissa van Beekveld, Wim Beenakker, Sascha Caron +2
We identify the parameter regions of the phenomenological minimal supersymmetric standard model (pMSSM) with the minimal possible fine-tuning. We show that the fine-tuning of the p…