Heavy-flavour production in fixed-target mode
Pre-published on:
January 15, 2024
Published on:
—
Abstract
LHCb is the only experiment that can operate in fixed-target mode at the LHC. In this particular setup, one of the LHC $\mathrm{tev}$-energy beams of protons or lead ions interacts with a gaseous target to reach the highest center-of-mass energies in a fixed-target experiment up-to-date. This provides unique conditions to study charm production. In this report, recent LHCb results from its heavy-flavour program in fixed-target collisions are reported. These results include production measurements of open charm ($D^0, \overline{D}^0$) and hidden charm ($J/\psi$, $\psi(2S)$) in $p\mathrm{Ne}$ and $\mathrm{PbNe}$ collisions at $\sqrt{s_{\mathrm{NN}}}=68.5\,\mathrm{GeV}$ collected during LHC Run 2. These results provide data to study nuclear structure and the charm hadronisation mechanism in a previously unexplored kinematic phase space, as well as input for the understanding of cold nuclear matter and the formation of a hot and thermalised medium. Finally, recent progress in the commissioning of the upgraded LHCb detector and the new gas injection system, SMOG2, is reported.
DOI: https://doi.org/10.22323/1.450.0086
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