Speaker
Description
In order to obtain total charm cross sections in hadron-hadron collisions, measured fiducial cross sections need to be extrapolated including the treatment of charm fragmentation non-universality effects which have recently been reported by the LHC experiments. For this, a novel phenomenological approach [1] was introduced with a theory-inspired extrapolation function which is constrained by various published measurements without the need to assume any particular non-universal fragmentation model. The total charm cross section measurements obtained can then be used for a direct comparison with NNLO theory, which is the highest order available for charm to date. At the total cross section level, the theory is free from fragmentation inputs, such that its $\sqrt{s}$ dependence can be directly used to constrain other QCD parameters. A first evaluation of constraints on parton density functions and the charm quark mass is also presented.
[1] PoS EPS-HEP2023 (2024) 367, arXiv:2311.07523
| Alternate track | 05. Quark and Lepton Flavour Physics |
|---|---|
| I read the instructions above | Yes |
