Please use this identifier to cite or link to this item: http://buratest.brunel.ac.uk/handle/2438/11278
Title: Measurements of the ϒ(1S), ϒ(2S), and ϒ(3S) differential cross sections in pp collisions at √s= 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
Zenoni, F
Adler, V
Beernaert, K
Benucci, L
Cimmino, A
Teodorescu, L
Costantini, S
Crucy, S
Dildick, S
Fagot, A
Leslie, D
Garcia, G
Mccartin, J
Ocampo Rios, AA
Kyberd, P
Poyraz, D
Ryckbosch, D
Khan, A
Salva Diblen, S
Hobson, PR
Cole, JE
Hartl, C
Hörmann, N
Hrubec, J
Jeitler, M
Jeitler, M
Kiesenhofer, W
Knünz, V
Krammer, M
Krammer, M
Krätschmer, I
Liko, D
Mikulec, I
Rabady, D
Rabady, D
Rahbaran, B
Rohringer, H
Schöfbeck, R
Strauss, J
Treberer-Treberspurg, W
Waltenberger, W
Wulz, CE
Wulz, CE
Mossolov, V
Shumeiko, N
Suarez Gonzalez, J
Alderweireldt, S
Bansal, S
Cornelis, T
De Wolf, EA
Janssen, X
Knutsson, A
Lauwers, J
Luyckx, S
Ochesanu, S
Rougny, R
Van De Klundert, M
Van Haevermaet, H
Van Mechelen, P
Van Remortel, N
Van Spilbeeck, A
Blekman, F
Blyweert, S
D'Hondt, J
Daci, N
Heracleous, N
Keaveney, J
Lowette, S
Maes, M
Olbrechts, A
Python, Q
Strom, D
Tavernier, S
Van Doninck, W
Van Mulders, P
Van Onsem, GP
Villella, I
Caillol, C
Clerbaux, B
De Lentdecker, G
Dobur, D
Favart, L
Gay, APR
Grebenyuk, A
Léonard, A
Mohammadi, A
Perniè, L
Perniè, L
Randle-conde, A
Reis, T
Seva, T
Thomas, L
Van der Velde, C
Vanlaer, P
Wang, J
Reid, ID
Keywords: CMS;Upsilon;B-Physics;Cross section
Issue Date: 2015
Publisher: Elsevier
Citation: Physics Letters B, 749: 14 - 34, (2015)
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>≈20GeV 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: http://www.sciencedirect.com/science/article/pii/S037026931500547X
http://bura.brunel.ac.uk/handle/2438/11278
DOI: http://dx.doi.org/10.1016/j.physletb.2015.07.037
ISSN: 0370-2693
Appears in Collections:Dept of Electronic and Computer Engineering Research Papers

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