Zobrazeno 1 - 10
of 74
pro vyhledávání: '"Rikkert Frederix"'
Autor:
Rikkert Frederix, Tetiana Moskalets
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 84, Iss 7, Pp 1-9 (2024)
Abstract We compute top quark pair production in association with a bottom quark pair at the LHC within the five-flavour scheme, matched to a parton shower, employing the FxFx merging scheme for $$t\bar{t}+\text {jets}$$ t t ¯ + jets production with
Externí odkaz:
https://doaj.org/article/9f24eb14c42b44ea90641a2a9f2d645f
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 84, Iss 4, Pp 1-10 (2024)
Abstract We present a method that allows enabling matrix element corrections (MECs) in Pythia8 with MC@NLO matching, without incurring double counting. MECs are an interesting feature that may contribute to the accuracy of theoretical predictions, al
Externí odkaz:
https://doaj.org/article/7eb170d26e134d13b52a07808f9326e4
Autor:
Rikkert Frederix, Paolo Torrielli
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 83, Iss 11, Pp 1-6 (2023)
Abstract We introduce a new technique, that we dub Born spreading, aimed at reducing the number of negative-weight $${\mathbb {S}}$$ S events in the MC@NLO matching of NLO calculations with parton-shower simulations. We show that such a technique, ba
Externí odkaz:
https://doaj.org/article/9498e7511f4c40bb9ad178737e054a64
Autor:
Rikkert Frederix, Timea Vitos
Publikováno v:
Journal of High Energy Physics, Vol 2021, Iss 12, Pp 1-41 (2021)
Abstract We investigate the next-to-leading-colour (NLC) contributions to the colour matrix in the fundamental and the colour-flow decompositions for tree-level processes with all gluons, one quark pair and two quark pairs. By analytical examination
Externí odkaz:
https://doaj.org/article/99976c6cc8694ee8b00f5a50496254ef
Autor:
Rikkert Frederix, Ioannis Tsinikos
Publikováno v:
Journal of High Energy Physics, Vol 2021, Iss 11, Pp 1-23 (2021)
Abstract We introduce an improvement to the FxFx matrix element merging procedure for pp → t t ¯ W $$ t\overline{t}W $$ production at NLO in QCD with one and/or two additional jets. The main modification is an improved treatment of jets that are n
Externí odkaz:
https://doaj.org/article/89c3362bb95a4d59b2d83a30d8652d2e
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 81, Iss 9, Pp 1-11 (2021)
Abstract In this work we investigate the NLO QCD+EW corrections to the top quark pair production and their effects on the spin correlation coefficients and asymmetries at fixed-order top quark pair production and LO decay in the dilepton channel, wit
Externí odkaz:
https://doaj.org/article/eb0f4cfaad8f42d2bcfce2e4bf4ba02d
Autor:
Rikkert Frederix, Timea Vitos
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 80, Iss 10, Pp 1-10 (2020)
Abstract We present next-to-leading order (NLO) electroweak corrections to the dominant five angular coefficients parametrizing the Drell–Yan process in the Z-boson mass peak range for finite- $$p_T$$ p T vector boson production. The results are pr
Externí odkaz:
https://doaj.org/article/61dd4460e97f4888b0ccf0500bf96cbc
Subleading EW corrections and spin-correlation effects in $$t\bar{t}W$$ tt¯W multi-lepton signatures
Autor:
Rikkert Frederix, Ioannis Tsinikos
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 80, Iss 9, Pp 1-10 (2020)
Abstract Recently a slight tension between data and predictions has been reported in $$t\bar{t}W$$ tt¯W production by both the CMS and ATLAS collaborations. We revisit the theoretical predictions for this process, focussing on the following two effe
Externí odkaz:
https://doaj.org/article/35ed09817c804105bacfd9a570f732a5
Publikováno v:
Journal of High Energy Physics, Vol 2019, Iss 9, Pp 1-41 (2019)
Abstract In this work we calculate and provide precise predictions for the signature that is typically exploited at the LHC for the measurement of t-channel single-top production: 1 lepton, 1 light jet, 1 b-jet, Ɇ T and no additional jets or leptons
Externí odkaz:
https://doaj.org/article/4d687dcfec8545dd9fd50f06b0c1aeff
Autor:
Alessandro Broggio, Andrea Ferroglia, Rikkert Frederix, Davide Pagani, Benjamin D. Pecjak, Ioannis Tsinikos
Publikováno v:
Journal of High Energy Physics, Vol 2019, Iss 8, Pp 1-46 (2019)
Abstract This work studies the associated production of a top-quark pair with a W, Z, or Higgs boson at the LHC. Predictions for the total cross sections as well as for several differential distributions of the massive particles in the final state ar
Externí odkaz:
https://doaj.org/article/583a13cc0acb46d6812655b53bba3d03