Speaker
Description
It has been argued for more than four decades that the proton could have a sizeable intrinsic component of the lightest heavy quark, the charm quark. Innumerable efforts to establish intrinsic charm in the proton have remained inconclusive. In this talk we present evidence for intrinsic charm by exploiting a high-precision determination of the quark-gluon content of the nucleon based on the NNPDF4.0 fitting methodology and the largest experimental dataset ever. We disentangle the intrinsic charm component from charm-anticharm pairs arising from high-energy radiation. We establish the existence of intrinsic charm with a momentum distribution in remarkable agreement with model predictions. We confirm these findings by comparing to recent data on Z production with charm jets from the LHCb experiment
| Submitted on behalf of a Collaboration? | No |
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