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Forward production of prompt neutrinos from charm in the atmosphere and at high energy colliders
Journal article   Open access   Peer reviewed

Forward production of prompt neutrinos from charm in the atmosphere and at high energy colliders

Weidong Bai, Milind Diwan, Maria Vittoria Garzelli, Yu Seon Jeong, Karan Kumar and Mary Hall Reno
The journal of high energy physics, Vol.2023(10), 142
10/23/2023
DOI: 10.1007/JHEP10(2023)142
Appears in  Diamond Open Access
url
https://doi.org/10.1007/JHEP10(2023)142View
Published (Version of record) Open Access

Abstract

The high-energy atmospheric neutrino flux is dominated by neutrinos from the decays of charmed hadrons produced in the forward direction by cosmic ray interactions with air nuclei. We evaluate the charm contributions to the prompt atmospheric neutrino flux as a function of the center-of-mass energy � of the hadronic collision and of the center-of-mass rapidity y of the produced charm hadron. Uncertainties associated with parton distribution functions are also evaluated as a function of y. We find that the y coverage of LHCb for forward heavy-flavour production, complemented by the angular coverage of present and future forward neutrino experiments at the LHC, bracket the most interesting y regions for the prompt atmospheric neutrino flux. At � = 14 TeV foreseen for the HL-LHC phase, nucleon collisions in air contribute to the prompt neutrino flux prominently below Eν ~ 107 GeV. Measurements of forward charm and/or forward neutrinos produced in hadron collisions up to � = 100 TeV, which might become possible at the FCC, are relevant for the prompt atmospheric neutrino flux up to Eν = 108 GeV and beyond.
 Physics Quantum Field Theory Quantum Physics String Theory Classical and Quantum Gravitation Elementary Particles Physics and Astronomy Quantum Field Theories Regular Article - Theoretical Physics Relativity Theory

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