Measurements of differential cross sections for associated production of a W boson and jets in proton-proton collisions at s=8  TeV

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Abstract
Differential cross sections for a W boson produced in association with jets are measured in a data sample of proton-proton collisions at a center-of-mass energy of 8 TeV recorded with the CMS detector and corresponding to an integrated luminosity of 19.6  fb−1. The W bosons are identified through their decay mode W→μν. The cross sections are reported as functions of jet multiplicity, transverse momenta, and the scalar sum of jet transverse momenta (HT) for different jet multiplicities. Distributions of the angular correlations between the jets and the muon are examined, as well as the average number of jets as a function of HT and as a function of angular variables. The measured differential cross sections are compared with tree-level and higher-order recent event generators, as well as next-to-leading-order and next-to-next-to-leading-order theoretical predictions. The agreement of the generators with the measurements builds confidence in their use for the simulation of W+jets background processes in searches for new physics at the LHC.
Funding Information
  • Bundesministerium für Wissenschaft, Forschung und Wirtschaft
  • Austrian Science Fund
  • Fonds De La Recherche Scientifique - FNRS
  • Fonds Wetenschappelijk Onderzoek
  • Conselho Nacional de Desenvolvimento Científico e Tecnológico
  • Fundação Carlos Chagas Filho de Amparo à Pesquisa do Estado do Rio de Janeiro
  • Fundação de Amparo à Pesquisa do Estado de São Paulo
  • Ministry of Education Youth and Science
  • Chinese Academy of Sciences
  • Ministry of Science and Technology of the People’s Republic of China
  • National Natural Science Foundation of China
  • Research Promotion Foundation
  • Eesti Teadusagentuur (IUT23-4, IUT23-6)
  • Suomen Akatemia
  • Centre National de la Recherche Scientifique
  • Commissariat à l’Énergie Atomique et aux Énergies Alternatives/CEA
  • Deutsche Forschungsgemeinschaft
  • General Secretariat for Research and Technology
  • Ministry of Science, ICT and Future Planning
  • National Research Foundation of Korea
  • Consejo Nacional de Ciencia y Tecnología
  • Universidad Autónoma de San Luis Potosí
  • Joint Institute for Nuclear Research
  • Ministry of Education and Science of the Russian Federation
  • Paul Scherrer Institut
  • Ministry of Science and Technology, Taiwan
  • National Science Foundation
  • A.G. Leventis Foundation
  • Alexander von Humboldt-Stiftung
  • Agentschap voor Innovatie door Wetenschap en Technologie
  • Ministero dell’Istruzione, dell’Università e della Ricerca
  • Qatar National Research Fund
  • Welch Foundation (C-1845)
  • Coordenação de Aperfeiçoamento de Pessoal de Nível Superior
  • Hrvatska Zaklada za Znanost
  • Bundesministerium für Bildung und Forschung
  • Department of Atomic Energy, Government of India
  • Department of Science and Technology, Government of Kerala
  • Science Foundation Ireland
  • Istituto Nazionale di Fisica Nucleare
  • Ministry of Education, Science and Technology
  • Universiti Malaya
  • Ministry of Business, Innovation and Employment
  • Ministerstwo Nauki i Szkolnictwa Wy?szego
  • Fundação para a Ciência e a Tecnologia
  • Russian Academy of Sciences
  • Russian Foundation for Basic Research
  • Ministarstvo Prosvete, Nauke i Tehnološkog Razvoja
  • Secretaría de Estado de Investigacion, Desarrollo e Innovacion
  • Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung
  • National Science and Technology Development Agency
  • Türkiye Bilimsel ve Teknolojik Araştırma Kurumu
  • National Academy of Sciences of Ukraine
  • Science and Technology Facilities Council
  • U.S. Department of Energy
  • H2020 European Research Council
  • Alfred P. Sloan Foundation
  • Fonds pour la Formation à la Recherche dans l’Industrie et dans l’Agriculture
  • Ministerstvo Školství, Mládeže a T?lovýchovy
  • Narodowe Centrum Nauki (2014/14/M/ST2/00428, 2013/11/B/ST2/04202, 2014/13/B/ST2/02543, 2014/15/B/ST2/03998, 2012/07/E/ST2/01406)
  • Compagnia di San Paolo
  • Thalis and Aristeia programmes cofinanced by EU-ESF and the Greek NSRF
  • Rachadapisek Sompot Fund for Postdoctoral Fellowship, Chulalongkorn University (Thailand)
  • Colombian Funding Agency (COLCIENCIAS)
  • European Regional Development Fund
  • Helmholtz-Gemeinschaft Deutscher Forschungszentren
  • CINVESTAV
  • UniZH
  • Canton Zurich
  • A. P. Sloan Foundation
  • NSRF
  • Rachadapisek Sompot Fund
  • Belgian Fonds de la Recherche Scientifique
  • Croatian Ministry of Science, Education and Sport
  • Ministry of Education and Research, Estonian Research Council
  • Finnish Ministry of Education and Culture
  • Helsinki Institute of Physics
  • Institut National de Physique Nucléaire et de Physique des Particules/CNRS
  • National Scientific Research Foundation
  • National Innovation Office
  • Institute for Studies in Theoretical Physics and Mathematics
  • Lithuanian Academy of Sciences
  • Ministry of Education
  • SEP
  • Pakistan Atomic Energy Commission
  • Federal Agency of Atomic Energy of the Russian Federation
  • Programa Consolider-Ingenio 2010
  • ETH Board
  • ETH Zurich
  • SER
  • Thailand Center of Excellence in Physics
  • Institute for the Promotion of Teaching Science and Technology of Thailand
  • Special Task Force for Activating Research
  • Turkish Atomic Energy Authority
  • State Fund for Fundamental Researches
  • Marie-Curie programme
  • Belgian Federal Science Policy Office
  • Council of Science and Industrial Research
  • HOMING PLUS programme of the Foundation for Polish Science, cofinanced from European Union, Regional Development Fund
  • Consorzio per la Fisica (Trieste)
  • National Priorities Research Program by Qatar National Research Fund