Constraints on atmospheric charmed-meson production from IceCube

At very-high energies (100 TeV - 1 PeV), the small value of Bjorken-x (≤ 10−3 − 10−7) at which the parton distribution functions are evaluated makes the calculation of charm quark production very difficult. The charm quark has mass (~1.5±0.2 GeV) significantly above the ΛQCD scale (~200 MeV), and th...

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Bibliographic Details
Published inEPJ Web of Conferences Vol. 130; p. 5015
Main Author Palczewski, Tomasz Jan
Format Journal Article Conference Proceeding
LanguageEnglish
Published Les Ulis EDP Sciences 01.01.2016
Subjects
Charm (particle physics)
Distribution functions
Flux
Mathematical analysis
Neutrinos
Particle production
Quarks
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Summary:At very-high energies (100 TeV - 1 PeV), the small value of Bjorken-x (≤ 10−3 − 10−7) at which the parton distribution functions are evaluated makes the calculation of charm quark production very difficult. The charm quark has mass (~1.5±0.2 GeV) significantly above the ΛQCD scale (~200 MeV), and therefore its production is perturbatively calculable. However, the uncertainty in the data and the calculations cannot exclude some smaller non-perturbative contribution. To evaluate the prompt neutrino flux, one needs to know the charm production cross-section in pN -> cc̄ X, and hadronization of charm particles. This contribution briefly discusses computation of prompt neutrino flux and presents the strongest limit on prompt neutrino flux from IceCube.
ISSN:2100-014X
2101-6275
2100-014X
DOI:10.1051/epjconf/201613005015