Production of J/psi and Upsilon mesons in pp collisions at sqrt(s) = 8 TeV
LHCb collaboration: R. Aaij, C. Abellan Beteta, B. Adeva, M. Adinolfi,, C. Adrover, A. Affolder, Z. Ajaltouni, J. Albrecht, F. Alessio, M. Alexander,, S. Ali, G. Alkhazov, P. Alvarez Cartelle, A.A. Alves Jr, S. Amato, S. Amerio,, Y. Amhis, L. Anderlini, J. Anderson
TL;DR
This paper reports measurements of J/psi and Upsilon meson production in proton-proton collisions at 8 TeV using the LHCb detector, providing insights into quarkonium production mechanisms.
Contribution
It presents the first detailed measurement of J/psi and Upsilon production cross-sections and decay fractions in the specified kinematic range at 8 TeV.
Findings
Measured production cross-sections for J/psi and Upsilon mesons.
Determined the fraction of J/psi from b-hadron decays.
Analyzed dependence of production on p_T and rapidity.
Abstract
The production of J/psi and Upsilon mesons in pp collisions at sqrt(s) = 8 TeV is studied with the LHCb detector. The J/psi and Upsilon mesons are reconstructed in the mu+mu- decay mode and the signal yields are determined with a fit to the mu+mu- invariant mass distributions. The analysis is performed in the rapidity range 2.0<y<4.5 and transverse momentum range 0<p_T<14(15) GeV/c of the J/psi(Upsilon) mesons. The J/psi and Upsilon production cross-sections and the fraction of J/psi mesons from b-hadron decays are measured as a function of the meson p_T and y.
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