Abstract

The LHCb experiment is able to measure the production properties of heavy hadrons in a phase-space region that is complementary with respect to those of the ATLAS and CMS experiments. These measurements provide valuable information that allows to better understand quantum chromodynamics and to discriminate among several theoretical models. The measurement of the production cross-section of Υ(1S), Υ(2S) and Υ(3S) mesons at a centre-of-mass energy of 13 TeV is presented, along with the determination of the production cross-section of B+ mesons at and 13 TeV. Finally, the measurement of the production asymmetry at centre-of-mass energies of 7 and 8 TeV is also presented.

Highlights

  • Integrated luminosities used for the results presented today 1 fb-1 @ s = 7 TeV 2 fb-1 @ s = 8 TeV 2 fb-1 @ s = 13 TeV (2015-2016)

  • Prediction from Non-relativistic QCD (NRQCD) provides a reasonable description of data at high pU

  • The production asymmetry could depend on the kinematic of the D0

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Summary

Results

¡ (1S) Shaded areas: prediction ¡ (2S) from NRQCD* ¡ (3S) *Chinese Physics C 39 (2015) 12 p (¡ ) [GeV/c]. Measurements are dominated by systematic uncertainty Main contribution due to trigger efficiency and luminosity determination. Precise measurement of production cross-section of B. mesons provides important test for QCD calculations. Complementary phase-space with respect to ATLAS and CMS allow to test theory at low pU/high y. Possibility to measure ratios at different centre-of-mass energies to largely cancel theory and experimental uncertainties

Motivation
Kinematic dependence
Conclusions
Full Text
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