Please use this identifier to cite or link to this item:
http://bura.brunel.ac.uk/handle/2438/11278
Title: | Measurements of the ϒ(1S), ϒ(2S), and ϒ(3S) differential cross sections in pp collisions at √<i>s</i>= 7 TeV |
Authors: | Khachatryan, V Sirunyan, AM Tumasyan, A Adam, W Bergauer, T Dragicevic, M Erö, J Friedl, M Frühwirth, R Frühwirth, R Ghete, VM Dobur, D Favart, L Perniè, L Hobson, PR Gay, APR Grebenyuk, A Seva, T Léonard, A Mohammadi, A Perniè, L Wang, J Turner, M Randle-conde, A Cole, JE Reis, T Thomas, L Van der Velde, C Vanlaer, P Reid, ID Teodorescu, L Zenoni, F Adler, V Beernaert, K Leslie, D Benucci, L Cimmino, A Teodorescu, L Kyberd, P Costantini, S Crucy, S Dildick, S Fagot, A Garcia, G Mccartin, J Ocampo Rios, AA Hobson, PR Poyraz, D Ryckbosch, D Khan, A Salva Diblen, S Kiesenhofer, W Symonds, P Cole, JE Hartl, C Krammer, M Hörmann, N Hrubec, J Jeitler, M Jeitler, M Knünz, V Krammer, M Mikulec, I Krätschmer, I Liko, D Reid, ID Rabady, D Rabady, D Shumeiko, N Rahbaran, B Rohringer, H Schöfbeck, R Suarez Gonzalez, J Strauss, J Treberer-Treberspurg, W Waltenberger, W Wulz, CE Wulz, CE Mossolov, V Leslie, D Alderweireldt, S Bansal, S Cornelis, T De Wolf, EA Janssen, X Van Haevermaet, H Knutsson, A Lauwers, J Luyckx, S Blekman, F Rougny, R Ochesanu, S Leggat, D Van De Klundert, M Van Mechelen, P Van Remortel, N Van Spilbeeck, A Blyweert, S D'Hondt, J Daci, N Heracleous, N Kyberd, P Van Doninck, W Keaveney, J Lowette, S Maes, M Villella, I Olbrechts, A Python, Q Strom, D Tavernier, S Khan, A Van Mulders, P Van Onsem, GP Caillol, C Clerbaux, B De Lentdecker, G |
Keywords: | CMS;Upsilon;B-Physics;Cross section |
Issue Date: | 22-Jul-2015 |
Publisher: | Elsevier |
Citation: | Khachatryan, V., Sirunyan, A.M., Tumasyan, A. et al. for the benefit of the CMS Collaboration (2015) 'Measurements of the ϒ(1S), ϒ(2S), and ϒ(3S) differential cross sections in pp collisions at √<i>s</i>= 7 TeV', Physics Letters B, 749, pp. 14 - 34. doi: 10.1016/j.physletb.2015.07.037. |
Abstract: | Differential cross sections as a function of transverse momentum p<inf>T</inf> are presented for the production of ϒ(nS) (n = 1, 2, 3) states decaying into a pair of muons. Data corresponding to an integrated luminosity of 4.9fb<sup>-1</sup> in pp collisions at s=7TeV were collected with the CMS detector at the LHC. The analysis selects events with dimuon rapidity |y|<1.2 and dimuon transverse momentum in the range 10<p<inf>T</inf><100GeV. The measurements show a transition from an exponential to a power-law behavior at p<inf>T</inf>≈ 20 GeV for the three ϒ states. Above that transition, the ϒ(3S) spectrum is significantly harder than that of the ϒ(1S). The ratios of the ϒ(3S) and ϒ(2S) differential cross sections to the ϒ(1S) cross section show a rise as p<inf>T</inf> increases at low p<inf>T</inf>, then become flatter at higher p<inf>T</inf>. |
URI: | https://bura.brunel.ac.uk/handle/2438/11278 |
DOI: | https://doi.org/10.1016/j.physletb.2015.07.037 |
ISSN: | 0370-2693 |
Appears in Collections: | Dept of Electronic and Electrical Engineering Research Papers |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
Fulltext.pdf | Copyright © 2015 CERN for the benefit of the CMS Collaboration. Published by Elsevier B.V. This is an open access article under the CC BY license (https://creativecommons.org/licenses/by/4.0/). | 872.35 kB | Adobe PDF | View/Open |
This item is licensed under a Creative Commons License