Prompt neutrinos from charm: atmospheric and beam dump fluxes

Speaker: Mary Hall Reno, Iowa University

Speaker arrival: 22/06/2017

Speaker departure: 24/06/2017

Assigned office: 23

Title: Prompt neutrinos from charm: atmospheric and beam dump fluxes

Place: Seminario del Dpto Física Teórica y del Cosmos

Date: 23/06/2017

Time: 12:00

Neutrinos from charmed hadrons produced by cosmic ray interactions with air nuclei are the main background to high energy astrophysical neutrino flux measurements. Using next-to-leading order QCD, the dipole model and kT factorization, we evaluate the production of charm pairs with nuclear corrections. Using multi-component models of the incident cosmic ray flux, we make a new theoretical evaluation of the flux of prompt neutrinos from charmed hadron production and decay in the atmosphere. Collider results on charm pair production help constrain some of the inputs to the prompt neutrino flux calculation. A related evaluation of the tau neutrino flux from charm production shows that the proposed beam dump experiment SHiP would have an unprecedented opportunity to study tau neutrino interactions directly.