European Commission; Federal Ministry of Science, Research and Economy (Austria); Austrian Science Fund; Australian Research Council; National Fund for Scientific Research (Belgium); Research Foundation – Flanders; Conselho Nacional de Desenvolvimento Científico e Tecnológico (Brasil); Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (Brasil); 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 Sports (Czech Republic); Centre National de la Recherche Scientifique (France); Commissariat à l'énergie atomique et aux énergies alternatives (France); Ministry of Science and Technology of the People's Republic of China; Chinese Academy of Sciences; National Natural Science Foundation of China; Colciencias (Colombia); Research Promotion Foundation (Cyprus); Ministry of Education and Research (Estonia); Academy of Finland; Helsinki Institute of Physics; Bundesministerium für Bildung und Forschung (Deutschland); Deutsche Forschungsgemeinschaft; Helmholtz Association; General Secretariat of Research and Technology (Greece); Hungarian Scientific Research Fund; National Office for Research and Technology (Hungary); Department of Atomic Energy (India); Department of Science and Technology (India); Council of Science and Industrial Research (India); Institute for Research in Fundamental Sciences (Iran); Science Foundation Ireland; Istituto Nazionale di Fisica Nucleare (Italia); Compagnia di San Paolo (Italia); National Research Foundation of Korea; Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional (México); Consejo Nacional de Ciencia y Tecnología (México); Secretaría de Educación Pública (México); Universidad Autónoma de San Luis Potosí; Ministry of Science and Innovation (New Zealand); Pakistan Atomic Energy Commission; Fundação para a Ciência e a Tecnologia (Portugal); Foundation for Polish Science; Joint Institute for Nuclear Research (Russia); ROSATOM; Russian Academy of Sciences; Russian Foundation for Basic Research; Ministry of Education, Science and Technological Development (Serbia); Centro Nacional de Física de Partículas, Astropartículas y Nuclear (España); Ministerio de Ciencia e Innovación (España); Swiss Funding Agencies; Swiss National Science Foundation; The Scientific and Technological Research Council of Turkey; Turkish Atomic Energy Authority; National Science Council Taipei; Thailand National Electronics and Computer Technology Center; Institute for the Promotion of Teaching Science and Technology (Thailand); Science and Technology Facilities Council (UK); Department of Energy (US); National Science Foundation (US); A. G. Leventis Foundation; Alfred P. Sloan Foundation; Alexander von Humboldt Foundation.

The Υ(1S), Υ(2S), and Υ(3S) production cross sections are measured using a data sample corresponding to an integrated luminosity of 35.8±1.4pb-1 of proton-proton collisions at s=7TeV, collected with the CMS detector at the LHC. The Υ resonances are identified through their decays to dimuons. Integrated over the Υ transverse momentum range pTΥ<50GeV/c and rapidity range |yΥ|<2.4, and assuming unpolarized Υ production, the products of the Υ production cross sections and dimuon branching fractions areσ(pp→Υ(1S)X)B(Υ(1S)→μ+μ-)=(8.55 0.05-0.50+0.56±0.34)nb,σ(pp→Υ(2S)X)B(Υ(2S) →μ+μ-)=(2.21±0.03-0.14+0.16±0.09)nb,σ(pp→Υ(3S)X)B(Υ(3S)→μ+μ-)=(1.11±0.02-0.08+0. 10±0.04)nb, where the first uncertainty is statistical, the second is systematic, and the third is from the uncertainty in the integrated luminosity. The differential cross sections in bins of transverse momentum and rapidity, and the cross section ratios are presented. Cross section measurements performed within a restricted muon kinematic range and not corrected for acceptance are also provided. These latter measurements are independent of Υ polarization assumptions. The results are compared to theoretical predictions and previous measurements.

This article is published Open Access at sciencedirect.com. It is distributed under the terms of the Creative Commons Attribuion License 3.0.-- et al.

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