Szczegóły publikacji

We discuss far-forward production of charm mesons and neutrinos from their semileptonic decays in proton–proton collisions at the LHC energies. We include the gluon–gluon fusion, the intrinsic charm (IC) as well as the recombination partonic mechanisms. We present energy distributions for forward electron, muon, and tau neutrinos to be measured at the LHC by the FASER experiment. For all kinds of neutrinos, the IC and the recombination dominate over the standard charm production contribution for neutrino energies GeV. For electron and muon neutrinos, both mechanisms lead to a similar production rates and their separation seems rather impossible. On the other hand, for neutrino flux, the recombination is reduced making the measurement of the IC contribution very attractive.