Schumann, Steffen

[["dc.bibliographiccitation.issue","11"],["dc.bibliographiccitation.journal","Journal of High Energy Physics"],["dc.bibliographiccitation.volume","2019"],["dc.contributor.author","Marzani, Simone"],["dc.contributor.author","Reichelt, Daniel"],["dc.contributor.author","Schumann, Steffen"],["dc.contributor.author","Soyez, Gregory"],["dc.contributor.author","Theeuwes, Vincent"],["dc.date.accessioned","2020-12-10T14:07:49Z"],["dc.date.available","2020-12-10T14:07:49Z"],["dc.date.issued","2019"],["dc.identifier.doi","10.1007/JHEP11(2019)179"],["dc.identifier.eissn","1029-8479"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/17145"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/70306"],["dc.language.iso","en"],["dc.notes.intern","DOI Import GROB-354"],["dc.notes.intern","Merged from goescholar"],["dc.relation.orgunit","Fakultät für Physik"],["dc.rights","CC BY 4.0"],["dc.rights.uri","https://creativecommons.org/licenses/by/4.0/"],["dc.title","Fitting the strong coupling constant with soft-drop thrust"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.artnumber","678"],["dc.bibliographiccitation.issue","8"],["dc.bibliographiccitation.journal","The European Physical Journal C"],["dc.bibliographiccitation.volume","82"],["dc.contributor.author","Yallup, David"],["dc.contributor.author","Janßen, Timo"],["dc.contributor.author","Schumann, Steffen"],["dc.contributor.author","Handley, Will"],["dc.date.accessioned","2022-08-16T12:58:28Z"],["dc.date.available","2022-08-16T12:58:28Z"],["dc.date.issued","2022-08-05"],["dc.date.updated","2022-08-07T03:11:41Z"],["dc.description.abstract","Abstract\r\n We present the first application of a Nested Sampling algorithm to explore the high-dimensional phase space of particle collision events. We describe the adaptation of the algorithm, designed to perform Bayesian inference computations, to the integration of partonic scattering cross sections and the generation of individual events distributed according to the corresponding squared matrix element. As a first concrete example we consider gluon scattering processes into 3-, 4- and 5-gluon final states and compare the performance with established sampling techniques. Starting from a flat prior distribution Nested Sampling outperforms the Vegas algorithm and achieves results comparable to a dedicated multi-channel importance sampler. We outline possible approaches to combine Nested Sampling with non-flat prior distributions to further reduce the variance of integral estimates and to increase unweighting efficiencies."],["dc.identifier.citation","The European Physical Journal C. 2022 Aug 05;82(8):678"],["dc.identifier.doi","10.1140/epjc/s10052-022-10632-2"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/112752"],["dc.language.iso","en"],["dc.rights","CC BY 4.0"],["dc.rights.holder","The Author(s)"],["dc.title","Exploring phase space with nested sampling"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.subtype","original_ja"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.artnumber","162"],["dc.bibliographiccitation.issue","10"],["dc.bibliographiccitation.journal","Journal of High Energy Physics"],["dc.contributor.author","Gerwick, Erik"],["dc.contributor.author","Plehn, Tilman"],["dc.contributor.author","Schumann, Steffen"],["dc.contributor.author","Schichtel, Peter"],["dc.date.accessioned","2018-11-07T09:04:57Z"],["dc.date.available","2018-11-07T09:04:57Z"],["dc.date.issued","2012"],["dc.description.abstract","Jet emission at hadron colliders follows simple scaling patterns. Based on perturbative QCD we derive Poisson and staircase scaling for final state as well as initial state radiation. Parton density effects enhance staircase scaling at low multiplicities. We propose experimental tests of our theoretical findings in Z+jets and QCD gap jets production, based on minor additions to current LHC analyses."],["dc.identifier.doi","10.1007/JHEP10(2012)162"],["dc.identifier.isi","000310851300037"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/8897"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/25214"],["dc.notes.intern","Merged from goescholar"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Springer"],["dc.relation.issn","1029-8479"],["dc.relation.orgunit","Fakultät für Physik"],["dc.rights","Goescholar"],["dc.rights.uri","https://goedoc.uni-goettingen.de/licenses"],["dc.title","Scaling patterns for QCD jets"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.artnumber","64"],["dc.bibliographiccitation.issue","6"],["dc.bibliographiccitation.journal","Journal of High Energy Physics"],["dc.bibliographiccitation.volume","2022"],["dc.contributor.author","Bothmann, Enrico"],["dc.contributor.author","Napoletano, Davide"],["dc.contributor.author","Schönherr, Marek"],["dc.contributor.author","Schumann, Steffen"],["dc.contributor.author","Villani, Simon L."],["dc.date.accessioned","2022-06-17T12:42:43Z"],["dc.date.available","2022-06-17T12:42:43Z"],["dc.date.issued","2022-06-13"],["dc.date.updated","2022-06-17T08:03:24Z"],["dc.description.abstract","We consider the production of a pair of Z bosons at the LHC and study the inclusion of EW corrections in theoretical predictions at fixed order and based on multijet-merged parton-shower simulations. To this end we present exact NLO EW results for pp → e+e−μ+μ−, and, for the first time, for pp → e+e−μ+μ−j, and compare them to the EW virtual and NLL Sudakov approximation. We then match the exact NLO EW result to the resummed Sudakov logarithms to achieve an improved NLO EW + NLL EW sud exp $ \\mathrm{NLO}\\ \\mathrm{EW}+\\mathrm{NLL}\\ {\\mathrm{EW}}_{\\mathrm{sud}}^{\\mathrm{exp}} $ result. Further, we discuss the inclusion of the above EW corrections in MePs@Nlo event simulations in the framework of the Sherpa event generator. We present detailed phenomenological predictions for inclusive ZZ and ZZj production taking into account the dominant EW corrections through the EW virtual approximation, as well as through (exponentiated) EW Sudakov logarithms."],["dc.identifier.citation","Journal of High Energy Physics. 2022 Jun 13;2022(6):64"],["dc.identifier.doi","10.1007/JHEP06(2022)064"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/111436"],["dc.language.iso","en"],["dc.rights","CC BY 4.0"],["dc.rights.holder","The Author(s)"],["dc.subject","NLO Computations"],["dc.subject","QCD Phenomenology"],["dc.title","Higher-order EW corrections in ZZ and ZZj production at the LHC"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.subtype","original_ja"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","2115"],["dc.bibliographiccitation.issue","7"],["dc.bibliographiccitation.journal","Computer Physics Communications"],["dc.bibliographiccitation.lastpage","2126"],["dc.bibliographiccitation.volume","185"],["dc.contributor.author","Del Debbio, Luigi"],["dc.contributor.author","Hartland, Nathan"],["dc.contributor.author","Schumann, Steffen"],["dc.date.accessioned","2018-11-07T09:38:22Z"],["dc.date.available","2018-11-07T09:38:22Z"],["dc.date.issued","2014"],["dc.description.abstract","MCgrid is a software package that provides access to the APPLgrid interpolation tool for Monte Carlo event generator codes, allowing for fast and flexible variations of scales, coupling parameters and PDFs in cutting edge leading- and next-to-leading-order QCD calculations. This is achieved by providing additional tools to the Rivet analysis system for the construction of MCgrid enhanced Rivet analyses. The interface is based around a one-to-one correspondence between a Rivet histogram class and a wrapper for an APPLgrid interpolation grid. The Rivet system provides all of the analysis tools required to project a Monte Carlo weight upon an observable bin, and the MCgrid package provides the correct conversion of the event weight to an APPLgrid fill call. MCgrid has been tested and designed for use with the SHERPA event generator, however as with Rivet the package is suitable for use with any code which can produce events in the HepMC event record format."],["dc.identifier.doi","10.1016/j.cpc.2014.03.023"],["dc.identifier.isi","000337768700026"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/33053"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Elsevier Science Bv"],["dc.relation.issn","1879-2944"],["dc.relation.issn","0010-4655"],["dc.title","MCgrid: Projecting cross section calculations on grids"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","1"],["dc.bibliographiccitation.journal","Computer Physics Communications"],["dc.bibliographiccitation.lastpage","10"],["dc.bibliographiccitation.volume","186"],["dc.contributor.author","Kroeninger, Kevin"],["dc.contributor.author","Schumann, Steffen"],["dc.contributor.author","Willenberg, Benjamin"],["dc.date.accessioned","2018-11-07T10:04:18Z"],["dc.date.available","2018-11-07T10:04:18Z"],["dc.date.issued","2015"],["dc.description.abstract","A new Monte Carlo algorithm for phase space sampling, named (MC)(3), is presented. It is based on Markov Chain Monte Carlo techniques but at the same time incorporates prior knowledge about the target distribution in the form of suitable phase space mappings from a corresponding Multi-Channel Importance Sampling Monte Carlo. The combined approach inherits the benefits of both techniques while typical drawbacks of either solution get ameliorated. (C) 2014 Elsevier B.V. All rights reserved."],["dc.identifier.doi","10.1016/j.cpc.2014.08.024"],["dc.identifier.isi","000345734200001"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/38664"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Elsevier Science Bv"],["dc.relation.issn","1879-2944"],["dc.relation.issn","0010-4655"],["dc.title","(MC)(3)-A Multi-Channel Markov Chain Monte Carlo algorithm for phase-space sampling"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.artnumber","131"],["dc.bibliographiccitation.issue","3"],["dc.bibliographiccitation.journal","Journal of High Energy Physics"],["dc.bibliographiccitation.volume","2022"],["dc.contributor.author","Reichelt, Daniel"],["dc.contributor.author","Caletti, Simone"],["dc.contributor.author","Fedkevych, Oleh"],["dc.contributor.author","Marzani, Simone"],["dc.contributor.author","Schumann, Steffen"],["dc.contributor.author","Soyez, Gregory"],["dc.date.accessioned","2022-05-02T08:09:20Z"],["dc.date.available","2022-05-02T08:09:20Z"],["dc.date.issued","2022"],["dc.date.updated","2022-07-29T11:35:15Z"],["dc.description.abstract","A bstract We compute resummed and matched predictions for jet angularities in hadronic dijet and Z +jet events with and without grooming the candidate jets using the SoftDrop technique. Our theoretical predictions also account for non-perturbative corrections from the underlying event and hadronisation through parton-to-hadron level transfer matrices extracted from dedicated Monte Carlo simulations with Sherpa. Thanks to this approach we can account for non-perturbative migration effects in both the angularities and the jet transverse momentum. We compare our predictions against recent measurements from the CMS experiment. This allows us to test the description of quark- and gluon-jet enriched phase-space regions separately. We supplement our study with Sherpa results based on the matching of NLO QCD matrix elements with the parton shower. Both theoretical predictions offer a good description of the data, within the experimental and theoretical uncertainties. The latter are however sizeable, motivating higher-accuracy calculations."],["dc.description.abstract","A bstract We compute resummed and matched predictions for jet angularities in hadronic dijet and Z +jet events with and without grooming the candidate jets using the SoftDrop technique. Our theoretical predictions also account for non-perturbative corrections from the underlying event and hadronisation through parton-to-hadron level transfer matrices extracted from dedicated Monte Carlo simulations with Sherpa. Thanks to this approach we can account for non-perturbative migration effects in both the angularities and the jet transverse momentum. We compare our predictions against recent measurements from the CMS experiment. This allows us to test the description of quark- and gluon-jet enriched phase-space regions separately. We supplement our study with Sherpa results based on the matching of NLO QCD matrix elements with the parton shower. Both theoretical predictions offer a good description of the data, within the experimental and theoretical uncertainties. The latter are however sizeable, motivating higher-accuracy calculations."],["dc.identifier.citation","Journal of High Energy Physics. 2022 Mar 21;2022(3):131"],["dc.identifier.doi","10.1007/JHEP03(2022)131"],["dc.identifier.pii","18025"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/107356"],["dc.language.iso","en"],["dc.notes.intern","DOI Import GROB-561"],["dc.publisher","Springer Berlin Heidelberg"],["dc.relation.eissn","1029-8479"],["dc.rights.holder","The Author(s)"],["dc.rights.uri","https://creativecommons.org/licenses/by/4.0"],["dc.subject","Jets and Jet Substructure"],["dc.subject","Resummation"],["dc.subject","Parton Shower"],["dc.title","Phenomenology of jet angularities at the LHC"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.artnumber","590"],["dc.bibliographiccitation.issue","11"],["dc.bibliographiccitation.journal","The European Physical Journal C"],["dc.bibliographiccitation.volume","76"],["dc.contributor.author","Bothmann, Enrico"],["dc.contributor.author","Schonherr, Marek"],["dc.contributor.author","Schumann, Steffen"],["dc.date.accessioned","2018-11-07T10:06:51Z"],["dc.date.available","2018-11-07T10:06:51Z"],["dc.date.issued","2016"],["dc.description.abstract","We present the implementation and validation of the techniques used to efficiently evaluate parametric and perturbative theoretical uncertainties in matrix-element plus parton-shower simulations within the Sherpa event-generator framework. By tracing the full as and PDF dependences, including the parton-shower component, as well as the fixed-order scale uncertainties, we compute variational event weights on-the-fly, thereby greatly reducing the computational costs to obtain theoretical-uncertainty estimates."],["dc.identifier.doi","10.1140/epjc/s10052-016-4430-0"],["dc.identifier.isi","000392809600001"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/14196"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/39174"],["dc.notes.intern","Merged from goescholar"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Springer"],["dc.relation","info:eu-repo/grantAgreement/EC/FP7/315877/EU/Training Network for Monte Carlo Event Generators for LHC Physics/MCnetITN"],["dc.relation.issn","1434-6052"],["dc.relation.issn","1434-6044"],["dc.relation.orgunit","Fakultät für Physik"],["dc.rights","CC BY 4.0"],["dc.title","Reweighting QCD matrix-element and parton-shower calculations"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.artnumber","135"],["dc.bibliographiccitation.issue","3"],["dc.bibliographiccitation.journal","The European Physical Journal C"],["dc.bibliographiccitation.volume","75"],["dc.contributor.author","Hoeche, Stefan"],["dc.contributor.author","Kuttimalai, Silvan"],["dc.contributor.author","Schumann, Steffen"],["dc.contributor.author","Siegert, Frank"],["dc.date.accessioned","2018-11-07T09:59:28Z"],["dc.date.available","2018-11-07T09:59:28Z"],["dc.date.issued","2015"],["dc.description.abstract","We present a fully automated framework as part of the Sherpa event generator for the computation of tree-level cross sections in Beyond Standard Model scenarios, making use of model information given in the Universal FeynRules Output format. Elementary vertices are implemented into C++ code automatically and provided to the matrix-element generator Comix at runtime. Widths and branching ratios for unstable particles are computed from the same building blocks. The corresponding decays are simulated with spin correlations. Parton showers, QED radiation and hadronization are added by Sherpa, providing a full simulation of arbitrary BSM processes at the hadron level."],["dc.identifier.doi","10.1140/epjc/s10052-015-3338-4"],["dc.identifier.fs","616032"],["dc.identifier.isi","000355668200002"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/11733"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/37592"],["dc.notes.intern","Merged from goescholar"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Springer"],["dc.relation","info:eu-repo/grantAgreement/EC/FP7/315877/EU//MCNETITN"],["dc.relation.issn","1434-6052"],["dc.relation.issn","1434-6044"],["dc.relation.orgunit","Fakultät für Physik"],["dc.rights","CC BY 4.0"],["dc.title","Beyond standard model calculations with Sherpa"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.issue","10"],["dc.bibliographiccitation.journal","Journal of High Energy Physics"],["dc.bibliographiccitation.volume","2020"],["dc.contributor.author","Bräuer, Stephan"],["dc.contributor.author","Denner, Ansgar"],["dc.contributor.author","Pellen, Mathieu"],["dc.contributor.author","Schönherr, Marek"],["dc.contributor.author","Schumann, Steffen"],["dc.date.accessioned","2021-04-14T08:32:17Z"],["dc.date.available","2021-04-14T08:32:17Z"],["dc.date.issued","2020"],["dc.identifier.doi","10.1007/JHEP10(2020)159"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/83870"],["dc.language.iso","en"],["dc.notes.intern","DOI Import GROB-399"],["dc.relation.eissn","1029-8479"],["dc.title","Fixed-order and merged parton-shower predictions for WW and WWj production at the LHC including NLO QCD and EW corrections"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]