Measurement of the Υ(1S), Υ(2S), and Υ(3S) cross sections in pp collisions at s=7TeV

Please use this identifier to cite or link to this item: https://ir.lib.ncu.edu.tw/handle/987654321/105422

Title:	Measurement of the Υ(1S), Υ(2S), and Υ(3S) cross sections in pp collisions at s=7TeV
Authors:	張元翰;Chatrchyan, S.;Mossolov, V.;Souza, M.H.G.;Malek, M.;Teng, H.;Morovic, S.;Mousa, J.;Mahmoud, M.A.;Lassila-Perini, K.;Chierici, R.;Schael, S.;Heidemann, C.;Bontenackels, M.;Erdogan, Y.;Lange, W.;Schmidt, A.;Loukas, D.;Nishu, N.;Kumar, V.;Aziz, T.;Pacifico, N.;Fasanella, D.;Chiorboli, M.;DʼAlessandro, R.;Focardi, E.;Gonzi, S.;Tosi, S.;Lista, L.;Bisello, D.;Dosselli, U.;Zumerle, G.;Saha, A.;Cavallari, F.;Casasso, S.;Chang, S.;Kim, J.Y.;Goh, J.;Lee, J.;Lee, S.;Lopez-Fernandez, R.;Carrillo Moreno, S.;Morelos Pineda, A.;Popov, V.;Popov, A.;Azhgirey, I.;Grishin, V.;Krpic, D.;Milosevic, J.;Aguilar-Benitez, M.;Fernandez, M.;Vilar Cortabitarte, R.;Bernet, C.;Giordano, D.;Guida, R.;Kaadze, K.;Santanastasio, F.;Eugster, J.;Theofilatos, K.;Vergili, L.N.;Surat, U.E.;Heath, G.P.;Lyons, L.;Vazquez Acosta, M.;Demiragli, Z.;Garabedian, A.;Chertok, M.;Conway, J.;Rakness, G.;Wasserbaech, S.;Krutelyov, V.;Bunn, J.;Chen, Y.;Rogan, C.;Veverka, J.;Ulmer, K.A.;Bhat, P.C.;Mason, D.;Yang, F.;Das, S.;Prosper, H.;Lacroix, F.;Giurgiu, G.;Bendavid, J.;Goncharov, M.;Dahmes, B.;Kubik, A.;Karmgard, D.J.;Planer, M.;Wayne, M.;Marlow, D.;Everett, A.;Vidal Marono, M.;Eshaq, Y.;Goldenzweig, P.;Dragoiu, C.;Volobouev, I.;Greene, S.;Gurrola, A.;Anderson, M.;Lazaridis, C.
Contributors:	理學院物理學系
Keywords:	CMS;Dimuons;Physics;Quarkonia;Upsilon
Date:	2013-11-25
Issue Date:	2026-04-23 12:24:43 (UTC+8)
Publisher:	United States: Elsevier B.V
Abstract:	摘要： 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±1.4 pb−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 pTϒ<50 GeV/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. 出版者： United States: Elsevier B.V 出版日期： 2013-11-01 出處： Physics Letters. Section B, 2013-11, Vol.727 (1-3), p.101-125 資源來源： Elsevier ScienceDirect Journals Complete 版權： 2013 CERN 識別號： ISSN: 0370-2693 識別號： EISSN: 1873-2445 識別號： DOI: 10.1016/j.physletb.2013.10.033
Appears in Collections:	[Department of Physics] journal & Dissertation

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