Schumann, Steffen

[["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.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"]]

[["dc.bibliographiccitation.firstpage","617"],["dc.bibliographiccitation.journal","Computer Physics Communications"],["dc.bibliographiccitation.lastpage","618"],["dc.bibliographiccitation.volume","196"],["dc.contributor.author","Bothmann, Enrico"],["dc.contributor.author","Hartland, Nathan"],["dc.contributor.author","Schumann, Steffen"],["dc.date.accessioned","2018-11-07T09:49:54Z"],["dc.date.available","2018-11-07T09:49:54Z"],["dc.date.issued","2015"],["dc.description.abstract","MCgrid is a software package that provides access to interpolation tools for Monte Carlo event generator codes, allowing for the fast and flexible variation of scales, coupling parameters and PDFs in cutting edge leading- and next-to-leading-order QCD calculations. We present the upgrade to version 2.0 which has a broader scope of. interfaced interpolation tools, now providing access to fastNLO, and features an approximated treatment for the projection of MC@NLO-type calculations onto interpolation grids. MCgrid 2.0 also now supports the extended information provided through the HepMC event record used in the recent SHERPA version 2.2.0. The additional information provided therein allows for the support of multi-jet merged QCD calculations in a future update of MCgrid. New version program summary Program title: MCgrid Catalogue identifier: AESS_v2_0 Program summary URL: http://cpc.cs.qub.ac.uk/summaries/AESS_v2_0.html Program obtainable from: CPC Program Library, Queen's University, Belfast, N. Ireland Licensing provisions: Standard CPC licence, http://cpc.cs.qub.ac.uk/licence/licence.html No. of lines in distributed program, including test data, etc.: 512334 No. of bytes in distributed program, including test data, etc.: 4263504 Distribution format: tar.gz Programming language: C++, shell, Python. Computer: PC running Linux, Mac. Operating system: Linux, Mac OS. RAM: Varying Catalogue identifier of previous version: AESS_v1_0 Journal reference of previous version: Comput. Phys. Comm. 185(2014)2115 Classification: 11.2, 11.5, 11.9. External routines: HepMC [1], Rivet [2], APPLgrid [3] and fastNLO [4]. A SHERPA [5] installation is also required. Does the new version supersede the previous version?: Yes Nature of problem: Efficient filling of cross section grid files from fully exclusive parton level Monte Carlo events. Solution method: Analyse Monte Carlo events via the Rivet program, which projects events on discretized cross section tables from APPLgrid [3] or fastNLO [4]. Reasons for new version: Previous MCgrid releases, cf. [6], supported only a single interpolation tool: APPLgrid [3]. Interfacing to more than one is important for cross checks and allows the use of MCgrid in a wider range of existing workflows. The recently released SHERPA 2.2.0 provides more information in the HepMC [1] event record, allowing for the filling of the exact next-to-leading-order expansion of an MC@NLO calculation, see e.g. [7] for details, into an interpolation grid. To process the additional information and adopt the new weight naming convention used in SHERPA 2.2.0, modifications on the MCgrid side have been necessary. The possibility of filling grids for MC@NLO-type calculations broadens the scope of MCgrid. It allows for the quantification of the residual dependencies on the parton showers that are beyond the fixed-order approximation. Understanding these dependencies and eventually taking them into account during the creation of interpolation grids in an automated way would help in the fitting of PDFs to data that are not appropriately described by fixed-order calculations. Summary of revisions: As an additional interpolation tool fastNLO [4] is now supported. This is the first time the fastNLO package can be used in conjunction with a multi-purpose Monte Carlo event generator. The required version of the fastNLO toolkit [8] is 2.3.1pre-2125 or later. With APPLgrid and fastNLO, all currently available interpolation tools for fixed-order QCD cross sections can now be used in conjunction with MCgrid. Modifications have been made in order to adopt the new naming conventions in the HepMC event record format introduced in SHERPA 2.2.0. The filling of the exact next-to-leading-order expansion of MC@NLO calculations has been implemented. The required information must be provided with the HepMC event record, which is the case for SHERPA 2.2.0. The MCgrid::BinnedGrid class has been added. It corresponds to the Rivet::BinnedHistogram class and allows for the direct creation of grids for every Rivet histogram combined therein. MCGRID_OUTPUT_PATH has been introduced, an environmental variable for specifying the grid output directory. An automatic counter suffix for grid file names has been added to prevent overwriting. The API has been streamlined for easier enabling of Rivet analyses for MCgrid. The provided examples have been updated for use with SHERPA 2.2.0 and Rivet 2.2.1. Running time: Approximately 6 min per 1 million Drell Yan events from SHERPA. This includes both the event generation and the MCgrid computations. The times can vary quite dramatically. The process used in the test case (which is a relatively quick one) takes about 2 min 30 s for the initial (phase-space fill) run and about 3 min for the second and final run. This is for 1 million events on a 2.9GhZ Ivy Bridge i7 processor. (C) 2015 Elsevier B.V. All rights reserved."],["dc.identifier.doi","10.1016/j.cpc.2015.07.002"],["dc.identifier.isi","000362602900056"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/35596"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.relation.issn","1879-2944"],["dc.relation.issn","0010-4655"],["dc.title","Introducing MCgrid 2.0: Projecting cross section calculations on grids"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.issue","4"],["dc.bibliographiccitation.journal","Journal of High Energy Physics"],["dc.bibliographiccitation.volume","2020"],["dc.contributor.author","Baberuxki, Nick"],["dc.contributor.author","Preuss, Christian T"],["dc.contributor.author","Reichelt, Daniel"],["dc.contributor.author","Schumann, Steffen"],["dc.date.accessioned","2020-12-10T14:07:30Z"],["dc.date.available","2020-12-10T14:07:30Z"],["dc.date.issued","2020"],["dc.identifier.doi","10.1007/JHEP04(2020)112"],["dc.identifier.eissn","1029-8479"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/70217"],["dc.language.iso","en"],["dc.notes.intern","DOI Import GROB-354"],["dc.title","Resummed predictions for jet-resolution scales in multijet production in e+e− annihilation"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.issue","4"],["dc.bibliographiccitation.journal","SciPost physics"],["dc.bibliographiccitation.volume","8"],["dc.contributor.author","Bothmann, Enrico"],["dc.contributor.author","Janssen, Timo"],["dc.contributor.author","Knobbe, Max"],["dc.contributor.author","Schmale, Tobias"],["dc.contributor.author","Schumann, Steffen"],["dc.date.accessioned","2020-01-31T10:41:30Z"],["dc.date.available","2020-01-31T10:41:30Z"],["dc.date.issued","2020"],["dc.description.abstract","We present a novel approach for the integration of scattering cross sections and the generation of partonic event samples in high-energy physics. We propose an importance sampling technique capable of overcoming typical deficiencies of existing approaches by incorporating neural networks. The method guarantees full phase space coverage and the exact reproduction of the desired target distribution, in our case given by the squared transition matrix element. We study the performance of the algorithm for a few representative examples, including top-quark pair production and gluon scattering into three- and four-gluon final states."],["dc.format.extent","19"],["dc.identifier.arxiv","2001.05478"],["dc.identifier.doi","10.21468/SciPostPhys.8.4.069"],["dc.identifier.eissn","2542-4653"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/62917"],["dc.language.iso","en"],["dc.notes.intern","DOI Import GROB-354"],["dc.title","Exploring phase space with Neural Importance Sampling"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.artnumber","034007"],["dc.bibliographiccitation.issue","3"],["dc.bibliographiccitation.journal","Physical Review D"],["dc.bibliographiccitation.volume","94"],["dc.contributor.author","Bothmann, Enrico"],["dc.contributor.author","Ferrarese, Piero"],["dc.contributor.author","Krauss, Frank"],["dc.contributor.author","Kuttimalai, Silvan"],["dc.contributor.author","Schumann, Steffen"],["dc.contributor.author","Thompson, Jennifer"],["dc.date.accessioned","2020-12-10T18:25:19Z"],["dc.date.available","2020-12-10T18:25:19Z"],["dc.date.issued","2016"],["dc.description.abstract","In this paper we consider particle production at a future circular hadron collider with 100 TeV center-of-mass energy within the Standard Model, and in particular their QCD aspects. Accurate predictions for these processes pose severe theoretical challenges related to large hierarchies of scales and possible large multiplicities of final-state particles. We investigate scaling patterns in multijet-production rates allowing to extrapolate predictions to very high final-state multiplicities. Furthermore, we consider large-area QCD jets and study the expectation for the mean number of subjets to be reconstructed from their constituents and confront these with analytical resummed predictions and with the expectation for boosted hadronic decays of top quarks and W bosons. We also discuss the validity of Higgs effective field theory in making predictions for Higgs-boson production in association with jets. Finally, we consider the case of new physics searches at such a 100 TeV hadron-collider machine and discuss the expectations for corresponding Standard-Model background processes."],["dc.identifier.doi","10.1103/PhysRevD.94.034007"],["dc.identifier.eissn","2470-0029"],["dc.identifier.isi","000380961000007"],["dc.identifier.issn","2470-0010"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/75650"],["dc.language.iso","en"],["dc.notes.intern","DOI Import GROB-354"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Amer Physical Soc"],["dc.relation.issn","2470-0029"],["dc.relation.issn","2470-0010"],["dc.title","Aspects of perturbative QCD at a 100 TeV future hadron collider"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.artnumber","036012"],["dc.bibliographiccitation.issue","3"],["dc.bibliographiccitation.journal","Physical Review D"],["dc.bibliographiccitation.volume","95"],["dc.contributor.author","Krauss, Frank"],["dc.contributor.author","Napoletano, Davide"],["dc.contributor.author","Schumann, Steffen"],["dc.date.accessioned","2020-12-10T18:25:21Z"],["dc.date.available","2020-12-10T18:25:21Z"],["dc.date.issued","2017"],["dc.description.abstract","We compare four- and five-flavor scheme predictions for b-associated production of Z and Higgs bosons. The results are obtained with SHERPA' s MC@NLO implementation for the four- flavor scheme, treating the b's as massive, and with multijet merging at leading and next-to-leading order for the five-flavor schemes. Comparison with data for Z + b((b) over bar) production at the 7 TeV LHC exhibits strengths and weaknesses of the different approaches and is used to validate predictions for b-associated Higgs-boson production at the 13 TeV Run II."],["dc.identifier.doi","10.1103/PhysRevD.95.036012"],["dc.identifier.eissn","2470-0029"],["dc.identifier.isi","000394092900008"],["dc.identifier.issn","2470-0010"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/75660"],["dc.language.iso","en"],["dc.notes.intern","DOI Import GROB-354"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","PUB_WoS_Import"],["dc.publisher","Amer Physical Soc"],["dc.relation.issn","2470-0029"],["dc.relation.issn","2470-0010"],["dc.title","Simulating b-associated production of Z and Higgs bosons with the Sherpa event generator"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.artnumber","063001"],["dc.bibliographiccitation.issue","6"],["dc.bibliographiccitation.journal","Journal of Physics G Nuclear and Particle Physics"],["dc.bibliographiccitation.volume","39"],["dc.contributor.author","Altheimer, A."],["dc.contributor.author","Arora, S."],["dc.contributor.author","Asquith, L."],["dc.contributor.author","Brooijmans, G."],["dc.contributor.author","Butterworth, J."],["dc.contributor.author","Campanelli, M."],["dc.contributor.author","Chapleau, B."],["dc.contributor.author","Cholakian, A. E."],["dc.contributor.author","Chou, J. P."],["dc.contributor.author","Dasgupta, Modhumita Ghosh"],["dc.contributor.author","Davison, Angus"],["dc.contributor.author","Dolen, J."],["dc.contributor.author","Ellis, S. D."],["dc.contributor.author","Essig, R."],["dc.contributor.author","Fan, J. J."],["dc.contributor.author","Field, Robert W."],["dc.contributor.author","Fregoso, A."],["dc.contributor.author","Gallicchio, J."],["dc.contributor.author","Gershtein, Y."],["dc.contributor.author","Gomes, Andreia"],["dc.contributor.author","Haas, A."],["dc.contributor.author","Halkiadakis, E."],["dc.contributor.author","Halyo, V."],["dc.contributor.author","Hoeche, Stefan"],["dc.contributor.author","Hook, A."],["dc.contributor.author","Hornig, A."],["dc.contributor.author","Huang, Pei-Cheng"],["dc.contributor.author","Izaguirre, E."],["dc.contributor.author","Jankowiak, M."],["dc.contributor.author","Kribs, G."],["dc.contributor.author","Krohn, D."],["dc.contributor.author","Larkoski, A. J."],["dc.contributor.author","Lath, A."],["dc.contributor.author","Lee, C."],["dc.contributor.author","Lee, S. J."],["dc.contributor.author","Loch, P."],["dc.contributor.author","Maksimovic, P."],["dc.contributor.author","Martinez, M."],["dc.contributor.author","Miller, D. W."],["dc.contributor.author","Plehn, Tilman"],["dc.contributor.author","Prokofiev, K."],["dc.contributor.author","Rahmat, R."],["dc.contributor.author","Rappoccio, S."],["dc.contributor.author","Safonov, A."],["dc.contributor.author","Salam, G. P."],["dc.contributor.author","Schumann, Steffen"],["dc.contributor.author","Schwartz, M. D."],["dc.contributor.author","Schwartzman, A."],["dc.contributor.author","Seymour, M."],["dc.contributor.author","Shao, Jie"],["dc.contributor.author","Sinervo, P."],["dc.contributor.author","Son, M."],["dc.contributor.author","Soper, D. E."],["dc.contributor.author","Spannowsky, M."],["dc.contributor.author","Stewart, I. W."],["dc.contributor.author","Strassler, M."],["dc.contributor.author","Strauss, E."],["dc.contributor.author","Takeuchi, M."],["dc.contributor.author","Thaler, Jennifer S."],["dc.contributor.author","Thomas, S."],["dc.contributor.author","Tweedie, B."],["dc.contributor.author","Sierra, R. Vasquez"],["dc.contributor.author","Vermilion, C. K."],["dc.contributor.author","Villaplana, M."],["dc.contributor.author","Vos, Marc A."],["dc.contributor.author","Wacker, Jennifer"],["dc.contributor.author","Walker, D."],["dc.contributor.author","Walsh, J. R."],["dc.contributor.author","Wang, L."],["dc.contributor.author","Wilbur, S."],["dc.contributor.author","Zhu, W."],["dc.date.accessioned","2018-11-07T09:09:57Z"],["dc.date.available","2018-11-07T09:09:57Z"],["dc.date.issued","2012"],["dc.description.abstract","In this paper, we review recent theoretical progress and the latest experimental results in jet substructure from the Tevatron and the LHC. We review the status of and outlook for calculation and simulation tools for studying jet substructure. Following up on the report of the Boost 2010 workshop, we present a new set of benchmark comparisons of substructure techniques, focusing on the set of variables and grooming methods that are collectively known as 'top taggers'. To facilitate further exploration, we have attempted to collect, harmonize and publish software implementations of these techniques."],["dc.identifier.doi","10.1088/0954-3899/39/6/063001"],["dc.identifier.isi","000304187900001"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/26387"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Iop Publishing Ltd"],["dc.relation.issn","1361-6471"],["dc.relation.issn","0954-3899"],["dc.title","Jet substructure at the Tevatron and LHC: new results, new tools, new benchmarks"],["dc.type","review"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.artnumber","089"],["dc.bibliographiccitation.issue","4"],["dc.bibliographiccitation.journal","Journal of High Energy Physics"],["dc.contributor.author","Gerwick, Erik"],["dc.contributor.author","Schumann, Steffen"],["dc.contributor.author","Gripaios, Ben"],["dc.contributor.author","Webber, Bryan"],["dc.date.accessioned","2018-11-07T09:26:13Z"],["dc.date.available","2018-11-07T09:26:13Z"],["dc.date.issued","2013"],["dc.description.abstract","We derive generating functions, valid to next-to-double logarithmic accuracy, for QCD jet rates according to the inclusive forms of the k(t), Cambridge/Aachen and anti-k(t) algorithms, which are equivalent at this level of accuracy. We compare the analytical results with jet rates and average jet multiplicities from the SHERPA event generator, and study the transition between Poisson-like and staircase-like behaviour of jet ratios."],["dc.identifier.doi","10.1007/JHEP04(2013)089"],["dc.identifier.isi","000321208800004"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/30249"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Springer"],["dc.relation.issn","1029-8479"],["dc.title","QCD jet rates with the inclusive generalized k(t) algorithms"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]