# Measurement of $\Upsilon$ production in $pp$ collisions at $\sqrt{s}$= 13 TeV

Abstract : The production cross-sections of ϒ(1S), ϒ(2S) and ϒ(3S) mesons in proton-proton collisions at $\sqrt{s}=13$ TeV are measured with a data sample corresponding to an integrated luminosity of 277 ± 11 pb$^{−1}$ recorded by the LHCb experiment in 2015. The ϒ mesons are reconstructed in the decay mode ϒ → μ$^{+}$μ$^{−}$. The differential production cross-sections times the dimuon branching fractions are measured as a function of the ϒ transverse momentum, p$_{T}$, and rapidity, y, over the range 0 < p$_{T}$ < 30 GeV/c and 2.0 < y < 4.5. The ratios of the cross-sections with respect to the LHCb measurement at $\sqrt{s}=8$ TeV are also determined. The measurements are compared with theoretical predictions based on NRQCD.
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Journal articles

https://hal.archives-ouvertes.fr/hal-01796872
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Submitted on : Tuesday, May 22, 2018 - 9:53:16 AM
Last modification on : Tuesday, June 18, 2019 - 11:43:41 PM

### Citation

R. Aaij, Bernardo Adeva, Marco Adinolfi, Ziad Ajaltouni, Simon Akar, et al.. Measurement of $\Upsilon$ production in $pp$ collisions at $\sqrt{s}$= 13 TeV. JHEP, 2018, 07, pp.134. ⟨10.1007/JHEP07(2018)134⟩. ⟨hal-01796872⟩

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