Karlsruhe 2024 – scientific programme
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T: Fachverband Teilchenphysik
T 114: Standard model 4 (strong/QCD)
T 114.5: Talk
Friday, March 8, 2024, 10:00–10:15, Geb. 30.23: 2/0
Measurement of differential φ production cross-sections in 13 TeV proton-proton collisions at the LHCb experiment — •Donata Osthues, Johannes Albrecht, and Hans Dembinski — TU Dortmund University, Dortmund, Germany
Traditional models of hadronization in proton-proton and proton-ion collisions are based on effective non-perturbative theories and successfully describe many phenomena. However, their predictions have recently been challenged by the observation of multiplicity-dependent strangeness production at mid-rapidity by the ALICE collaboration. Since this discovery, enhanced strangeness production was also found in the forward rapidity region. Enhanced strangeness production is a key observable to understand the Muon Puzzle, which is a phenomenon seen in high-energy air-showers. The LHCb experiment is ideally suited for studies on strangeness production at the LHC in the forward region, thanks to its particle identification capabilities and low pT threshold. We studied φ mesons via the decay φ → K+ K−, which consist of a strange-anti-strange quark pair and are abundantly produced. This makes φ mesons perfect candidates for these kind of studies. Thus, a measurement of their production cross-section in bins of transverse momentum and rapidity is performed. The data used for this analysis was collected during proton-proton collisions by the LHCb detector in 2015 and corresponds to an integrated luminosity of 4.6 n/b. This contribution presents the current status of the measurement.
Keywords: Soft-QCD; Muon Puzzle; Analysis; Cross-section; LHCb