Measurements of differential cross sections dσ/dϕ* and double-differential cross sections d2σ/dϕ*d|y| for inclusive Z boson production are presented using the dielectron and dimuon final states. The kinematic observable ϕ* correlates with the dilepton transverse momentum but has better resolution, and y is the dilepton rapidity. The analysis is based on data collected with the CMS experiment at a centre-of-mass energy of 8 TeV corresponding to an integrated luminosity of 19.7 fb−1. The normalised cross section (1/σ) dσ/dϕ*, within the fiducial kinematic region, is measured with a precision of better than 0.5% for ϕ* < 1. The measurements are compared to theoretical predictions and they agree, typically, within few percent.[Figure not available: see fulltext.]
Bibliographical noteFunding Information:
Now at Zewail City of Science and Technology, Zewail, Egypt Now at Fayoum University, El-Fayoum, Egypt Also at British University in Egypt, Cairo, Egypt Now at Ain Shams University, Cairo, Egypt Also at Universitéde Haute Alsace, Mulhouse, France Also at Skobeltsyn Institute of Nuclear Physics, Lomonosov Moscow State University, Moscow, Russia Also at Ilia State University, Tbilisi, Georgia Also at CERN, European Organization for Nuclear Research, Geneva, Switzerland Also at RWTH Aachen University, III. Physikalisches Institut A, Aachen, Germany Also at University of Hamburg, Hamburg, Germany Also at Brandenburg University of Technology, Cottbus, Germany Also at MTA-ELTE Lendület CMS Particle and Nuclear Physics Group, Eötvös Loránd University, Budapest, Hungary Also at Institute of Nuclear Research ATOMKI, Debrecen, Hungary Also at Institute of Physics, University of Debrecen, Debrecen, Hungary Also at Indian Institute of Technology Bhubaneswar, Bhubaneswar, India Also at Institute of Physics, Bhubaneswar, India Also at University of Visva-Bharati, Santiniketan, India Also at University of Ruhuna, Matara, Sri Lanka Also at Isfahan University of Technology, Isfahan, Iran Also at Yazd University, Yazd, Iran Also at Plasma Physics Research Center, Science and Research Branch, Islamic Azad University, Tehran, Iran Also at Università degli Studi di Siena, Siena, Italy Also at INFN Sezione di Milano-Bicocca; Università di Milano-Bicocca, Milano, Italy Also at Purdue University, West Lafayette, U.S.A. Also at International Islamic University of Malaysia, Kuala Lumpur, Malaysia Also at Malaysian Nuclear Agency, MOSTI, Kajang, Malaysia Also at Consejo Nacional de Ciencia y Tecnología, Mexico city, Mexico Also at Warsaw University of Technology, Institute of Electronic Systems, Warsaw, Poland Also at Institute for Nuclear Research, Moscow, Russia Now at National Research Nuclear University ’Moscow Engineering Physics Institute’ (MEPhI), Moscow, Russia Also at St. Petersburg State Polytechnical University, St. Petersburg, Russia Also at University of Florida, Gainesville, U.S.A. Also at P.N. Lebedev Physical Institute, Moscow, Russia Also at California Institute of Technology, Pasadena, U.S.A. Also at Budker Institute of Nuclear Physics, Novosibirsk, Russia Also at Faculty of Physics, University of Belgrade, Belgrade, Serbia Also at University of Belgrade, Faculty of Physics and Vinca Institute of Nuclear Sciences, Belgrade, Serbia Also at Scuola Normale e Sezione dell’INFN, Pisa, Italy Also at National and Kapodistrian University of Athens, Athens, Greece Also at Riga Technical University, Riga, Latvia Also at Universität Zürich, Zurich, Switzerland Also at Stefan Meyer Institute for Subatomic Physics (SMI), Vienna, Austria Also at Istanbul Aydin University, Istanbul, Turkey
We congratulate our colleagues in the CERN accelerator departments for the excellent performance of the LHC and thank the technical and administrative staffs at CERN and at other CMS institutes for their contributions to the success of the CMS effort. In addition, we gratefully acknowledge the computing centers and personnel of the Worldwide LHC Computing Grid for delivering so effectively the computing infrastructure essential to our analyses. Finally, we acknowledge the enduring support for the construction and operation of the LHC and the CMS detector provided by the following funding agencies: BMWFW and FWF (Austria); FNRS and FWO (Belgium); CNPq, CAPES, FAPERJ, and FAPESP (Brazil); MES (Bulgaria); CERN; CAS, MoST, and NSFC (China); COL-CIENCIAS (Colombia); MSES and CSF (Croatia); RPF (Cyprus); SENESCYT (Ecuador); MoER, ERC IUT, and ERDF (Estonia); Academy of Finland, MEC, and HIP (Finland); CEA and CNRS/IN2P3 (France); BMBF, DFG, and HGF (Germany); GSRT (Greece); OTKA and NIH (Hungary); DAE and DST (India); IPM (Iran); SFI (Ireland); INFN (Italy); MSIP and NRF (Republic of Korea); LAS (Lithuania); MOE and UM (Malaysia); BUAP, CINVESTAV, CONACYT, LNS, SEP, and UASLP-FAI (Mexico); MBIE (New Zealand); PAEC (Pakistan); MSHE and NSC (Poland); FCT (Portugal); JINR (Dubna); MON, RosAtom, RAS, RFBR and RAEP (Russia); MESTD (Serbia); SEIDI, CPAN, PCTI and FEDER (Spain); Swiss Funding Agencies (Switzerland); MST (Taipei); ThEPCenter, IPST, STAR, and NSTDA (Thailand); TUBITAK and TAEK (Turkey); NASU and SFFR (Ukraine); STFC (United Kingdom); DOE and NSF (U.S.A.).
Individuals have received support from the Marie-Curie program and the European Research Council and Horizon 2020 Grant, contract No. 675440 (European Union); the Leventis Foundation; the A. P. Sloan Foundation; the Alexander von Humboldt Foundation; the Belgian Federal Science Policy Office; the Fonds pour la Formation à la Recherche dans l’Industrie et dans l’Agriculture (FRIA-Belgium); the Agentschap voor Innovatie door Wetenschap en Technologie (IWT-Belgium); the Ministry of Education, Youth and Sports (MEYS) of the Czech Republic; the Council of Science and Industrial Research, India; the HOMING PLUS program of the Foundation for Polish Science, cofinanced from European Union, Regional Development Fund, the Mobility Plus program of the Ministry of Science and Higher Education, the National Science Center (Poland), contracts Harmonia 2014/14/M/ST2/00428, Opus 2014/13/B/ST2/02543, 2014/15/B/ST2/03998, and 2015/19/B/ST2/02861, Sonata-bis 2012/07/E/ST2/01406; the National Priorities Research Program by Qatar National Research Fund; the Programa Severo Ochoa del Princi-pado de Asturias; the Thalis and Aristeia programs cofinanced by EU-ESF and the Greek NSRF; the Rachadapisek Sompot Fund for Postdoctoral Fellowship, Chulalongkorn University and the Chulalongkorn Academic into Its 2nd Century Project Advancement Project (Thailand); the Welch Foundation, contract C-1845; and the Weston Havens Foundation (U.S.A.).
© 2018, The Author(s).
- Hadron-Hadron scattering (experiments)
- Particle correlations and fluctuations
- proton-proton scattering