Measurement of the $\Upsilon(1S), \Upsilon(2S)$, and $\Upsilon(3S)$ Cross Sections in $pp$ Collisions at $\sqrt{s}$ = 7 TeV

The CMS collaboration
Chatrchyan, Serguei , Khachatryan, Vardan , Sirunyan, Albert M , Tumasyan, Armen , Adam, Wolfgang , Aguilo, Ernest , Bergauer, Thomas , Dragicevic, Marko , Erö, Janos , Fabjan, Christian
Phys.Lett.B 727 (2013) 101-125, 2013.

Abstract (data abstract)
CERN-LHC. Measurement of the cross sections for Upsilon(1s), Upsilon(2S) and Upsilon(3S) production in proton-proton collisions at a centre of mass energy of 7 TeV. The data sample, with an integrated luminosity of 35.8+-1.4 pb-1 covers the PT range 0-50 GeV/c and |rapidity| < 2.4. The Upsilon resonances are identified through their decay to di-muons and the data are uncorrected for the branching ratio. Fiducial as well as acceptance-corrected cross sections are tabulated. The effects of the polarization on the acceptance corrected cross section are given for the following extreme scenarios: HX_ T - fully transverse in the helicity frame HX_ L - fully longitudinal in the helicity frame CS_ T - fully transverse in the Collins-Soper frame CS_ L - fully longitudinal in the Collins-Soper frame.

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