Study of charmonium production via the decay to $p\bar{p}$ at $\sqrt{s}=13TeV$

Abstract

Charmonium production cross-section in proton-proton collisions is measured at the centre-of-mass energy $\sqrt{s}=13TeV$ using decays to $p\bar{p}$ final state. The study is performed using a data sample corresponding to an integrated luminosity of $2.2{fb}^{-1}$ collected in 2018 with the $LHCb$ detector. The production cross-section of the ${\eta }_c$ meson is measured in a rapidity range of $2.0<y<4.0$ and in a transverse momentum range of $5.0<p_T<20.0GeV/c$, which is extended compared with previous $LHCb$ analyses. The differential cross-section is measured in bins of $p_T$ and, for the first time, of $y$. Upper limits, at 90% and 95% confidence levels, on the ${\eta }_c(2S)$ and $h_c(1P)$ prompt production cross-sections are determined for the first time.

All figures and tables, along with any supplementary material and additional information, are available at https://cern.ch/lhcbproject/Publications/p/LHCb-PAPER-2024-004.html (LHCb public pages)

References in corpus (10)

• PYTHIA 6.4 Physics and Manual
• Polarization for Prompt J/psi, psi(2s) production at the Tevatron and LHC
• ${\eta }_c$ production at the LHC challenges nonrelativistic-QCD factorization
• Handling uncertainties in background shapes: the discrete profiling method
• ${\eta }_c$ production at LHC and indications on the understanding of $J/\psi$ production
• Measurement of J/psi production in pp collisions at sqrt(s)=2.76 TeV
• Measurement of the ${\eta }_c(1S)$ production cross-section in $pp$ collisions at $\sqrt{s}=13$ TeV
• Curing the unphysical behaviour of NLO quarkonium production at the LHC and its relevance to constrain the gluon PDF at low scales
• Resolution of the LHCb ${\eta }_c$ anomaly
• Momentum scale calibration of the LHCb spectrometer

Cited by in corpus (1)

• How well does nonrelativistic QCD factorization work at next-to-leading order?