Dortmund 2021 – scientific programme

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T: Fachverband Teilchenphysik

T 77: QCD II

T 77.5: Talk

Thursday, March 18, 2021, 17:00–17:15, Tb

LHCb for astroparticle physics: Inclusive production of prompt charged particles — Johannes Albrecht¹, •Julian Boelhauve¹, Hans Dembinski¹, Michael Schmelling², and Bernhard Spaan¹ — ¹TU Dortmund University, Dortmund, Germany — ²Max Planck Institute for Nuclear Physics, Heidelberg, Germany

A long-standing issue in the field of cosmic-ray research is the discrepancy in the number of muons produced in high-energy air showers between observations and simulations, referred to as the Muon Puzzle. Precision measurements of hadron production in the forward region need to be performed to validate and improve the hadronic-interaction models used in air-shower simulations and to solve the Muon Puzzle. For the achievement of these goals, measuring the differential cross-section of inclusive production of prompt charged long-lived particles as a function of transverse momentum and pseudorapidity has key importance.

An analysis in which this differential cross-section is determined based on a trigger-unbiased data sample of proton-proton collisions recorded with the LHCb experiment at a centre-of-mass energy of 13 T−0.05em e−0.1em V is presented in this talk. In particular, the efficiency determination and the construction of proxies that enable a data-adjusted quantification of the backgrounds are described.