Atmospheric charm, QCD and neutrino astronomy

Giorno 9 ottobre 2019, con inizio alle ore 11:00, presso l'Aula F del DFA, su invito del Prof. Maurizio Consoli (INFN, Sez. Catania), il Dr Bernd Kniehl (DESY, Hamburg) terrà un seminario dal titolo Atmospheric charm, QCD and neutrino astronomy.

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Abstract. We present predictions for the prompt-neutrino flux arising from the decay of charmed mesons and baryons produced by the interactions of high-energy cosmic rays in the Earth's atmosphere, making use of a QCD approach on the basis of the general-mass variable-flavor-number scheme for the description of charm hadroproduction at NLO, complemented by a consistent set of fragmentation functions. We compare the theoretical results to those already obtained by our and other groups with different theoretical approaches. We provide comparisons with the experimental results obtained by the IceCube Collaboration in two different analyses and we discuss the implications for parton distribution functions.