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1811087676689874944
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Massachusetts Institute of Technology. Department of Physics
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Massachusetts Institute of Technology. Department of Physics
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MIT
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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[superscript -1] of proton-proton collisions at √s=7 TeV, 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 p[subscript T][superscript Υ] < 50GeV/c and rapidity range |y[superscript Υ]| < 2.4, and assuming unpolarized Υ production, the products of the Υ production cross sections and dimuon branching fractions are σ(pp→Υ(1S)X) · B(Υ(1S)→μ[superscript +]μ[superscript -]) =(8.55 ± 0.05[subscript -0.50][superscript +0.56] ± 0.34) nb, σ(pp→Υ(2S)X) · B(Υ(2S) →μ[superscript +]μ[superscript -]) =(2.21 ± 0.03[subscript -0.14][superscript +0.16] ± 0.09) nb, σ(pp→Υ(3S)X) · B(Υ(3S)→μ[superscript +]μ[superscript -]) =(1.11±0.02[subscript -0.08][superscript +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. Keywords: CMS, Physics, Quarkonia, Upsilon, Dimuons
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2024-09-23T13:50:15Z
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Article
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mit-1721.1/116552
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Massachusetts Institute of Technology
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2024-09-23T13:50:15Z
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2018
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Elsevier BV
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dspace
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mit-1721.1/1165522024-07-19T19:43:36Z Measurement of the ϒ(1S), ϒ(2S), and ϒ(3S) Cross Sections in Pp Collisions at √S=7 TeV Massachusetts Institute of Technology. Department of Physics 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[superscript -1] of proton-proton collisions at √s=7 TeV, 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 p[subscript T][superscript Υ] < 50GeV/c and rapidity range |y[superscript Υ]| < 2.4, and assuming unpolarized Υ production, the products of the Υ production cross sections and dimuon branching fractions are σ(pp→Υ(1S)X) · B(Υ(1S)→μ[superscript +]μ[superscript -]) =(8.55 ± 0.05[subscript -0.50][superscript +0.56] ± 0.34) nb, σ(pp→Υ(2S)X) · B(Υ(2S) →μ[superscript +]μ[superscript -]) =(2.21 ± 0.03[subscript -0.14][superscript +0.16] ± 0.09) nb, σ(pp→Υ(3S)X) · B(Υ(3S)→μ[superscript +]μ[superscript -]) =(1.11±0.02[subscript -0.08][superscript +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. Keywords: CMS, Physics, Quarkonia, Upsilon, Dimuons National Science Foundation (U.S.) United States. Department of Energy 2018-06-25T14:38:42Z 2018-06-25T14:38:42Z 2018-06-25 2018-06-08T15:33:11Z Article http://purl.org/eprint/type/JournalArticle 03702693 http://hdl.handle.net/1721.1/116552 Chatrchyan, S., et al. “Measurement of the ϒ(1S), ϒ(2S), and ϒ(3S) Cross Sections in Pp Collisions at √S=7 TeV.” Physics Letters B, vol. 727, no. 1–3, Nov. 2013, pp. 101–25. © 2013 CERN. http://dx.doi.org/10.1016/J.PHYSLETB.2013.10.033 Physics Letters B Attribution 3.0 United States (CC BY 3.0 US) https://creativecommons.org/licenses/by/3.0/us/ text/html Elsevier BV Physics Letters B
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| spellingShingle |
Measurement of the ϒ(1S), ϒ(2S), and ϒ(3S) Cross Sections in Pp Collisions at √S=7 TeV
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| title |
Measurement of the ϒ(1S), ϒ(2S), and ϒ(3S) Cross Sections in Pp Collisions at √S=7 TeV
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| title_full |
Measurement of the ϒ(1S), ϒ(2S), and ϒ(3S) Cross Sections in Pp Collisions at √S=7 TeV
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| title_fullStr |
Measurement of the ϒ(1S), ϒ(2S), and ϒ(3S) Cross Sections in Pp Collisions at √S=7 TeV
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| title_full_unstemmed |
Measurement of the ϒ(1S), ϒ(2S), and ϒ(3S) Cross Sections in Pp Collisions at √S=7 TeV
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| title_short |
Measurement of the ϒ(1S), ϒ(2S), and ϒ(3S) Cross Sections in Pp Collisions at √S=7 TeV
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| title_sort |
measurement of the ϒ 1s ϒ 2s and ϒ 3s cross sections in pp collisions at √s 7 tev
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| url |
http://hdl.handle.net/1721.1/116552
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