Compact Muon Solenoid
LHC, CERN
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| CMS-PAS-BPH-12-006 | ||
| $\Upsilon$(1S), $\Upsilon$(2S) and $\Upsilon$(3S) cross section measurements in pp collisions at $\sqrt{s} =$ 7 TeV | ||
| CMS Collaboration | ||
| 2013 | ||
| Abstract: The differential cross section as a function of transverse momentum for the production of the $\Upsilon(nS)$ ($n$=1,2,3) states decaying into a pair of muons has been measured in pp collisions at $\sqrt{s}$ = 7 TeV using 4.9 fb$^{-1}$ of data collected by the CMS detector. The analysis selected events with dimuon rapidity $|y(\mu\mu)|$ 0.6, and the measurements cover dimuon transverse momentum in the range $p_T(\mu\mu)=$ 10-100 GeV. The data show a transition from exponential to power-law behavior in the neighborhood of 20 GeV, and the power-law exponents for all three states are consistent. The ratio of differential cross sections for higher-$n$ S-wave relative to lower-$n$ S-wave states rises at low $p_T(\mu\mu)$, then becomes flatter at higher $p_T(\mu\mu)$ where the power-law behavior dominates. | ||
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Links:
CDS record (PDF) ;
inSPIRE record ;
Public twiki page ;
CADI line (restricted) ;
These preliminary results are superseded in this paper, PLB 749 (2015) 14. The superseded preliminary plots can be found here. |
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Compact Muon Solenoid LHC, CERN |
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