scholarly journals Prompt atmospheric neutrino flux

2017 ◽  
Author(s):  
Yu Seon Jeong ◽  
Atri Bhattacharya ◽  
Rikard Enberg ◽  
C.S. Kim ◽  
Mary Hall Reno ◽  
...  
Keyword(s):  
Atmospheric Neutrino ◽  
Neutrino Flux

scholarly journals On te Reduction of the Error in the Calculation of Low Energy (<1GeV) Atmospheric Neutrino Flux

2019 ◽  
Author(s):  
Morihiro Honda ◽  
M Sajjad Athar ◽  
T. Kajita ◽  
K. Kasahara ◽  
S. Midorikawa ◽  
...  
Keyword(s):  
Atmospheric Neutrino ◽  
Neutrino Flux ◽  
Low Energy

scholarly journals Improving the prediction of the Atmospheric neutrino flux using the atmospheric muon flux

2019 ◽  
Vol 208 ◽  
pp. 07001
Author(s):  
Morihiro Honda
Keyword(s):  
Energy Range ◽  
Energy Region ◽  
Test Bench ◽  
Atmospheric Neutrino ◽  
Neutrino Flux ◽  
Interaction Model ◽  
Muon Flux ◽  
Atmospheric Neutrinos ◽  
Hadronic Interaction ◽  
Atmospheric Muon

It is well known that the correlation of atmospheric neutrinos and muons are simply correlated in the energy region of 1–10 GeV, and used for the test bench of the hadronic interaction model used for the calculation of the atmospheric neutrino flux. However, the correlation becomes unclear for neutrinos in the energy range below 1 GeV, which is important for the study of mass ordering of neutrino and CP phase of the neutrino mass. We extend the study of the correlation to the lower neutrino energies and find that the atmospheric muon flux observed at high altitude shows a good correlation to the atmospheric neutrino flux, and could be used to calibrate the hadronic interaction model.

scholarly journals Production asymmetry of open charm mesons within unfavoured ragmentation scenario

2019 ◽  
Vol 199 ◽  
pp. 04007
Author(s):  
Rafał Maciuła
Keyword(s):  
Light Quark ◽  
Atmospheric Neutrino ◽  
Neutrino Flux ◽  
Meson Production ◽  
Lhcb Collaboration ◽  
Charm Mesons ◽  
Measured Asymmetry ◽  
Fragmentation Probability ◽  
Fragmentation Functions ◽  
Production Asymmetry

We consider unfavoured light quark/antiquark to D meson fragmentation. We discuss nonperturbative effects for small transverse momenta. The asymmetry for D+ and D- production measured by the LHCb collaboration provides natural constraints on the parton (quark/antiquark) fragmentation functions. We find that already a fraction of $q/\overline q \to D$ fragmentation probability is sufficient to account for the measured asymmetry. Large D-meson production asymmetries are found for large xF which is related to dominance of light quark/antiquark $q/\overline q \to D$ fragmentation over the standard c → D fragmentation. As a consequence, prompt atmospheric neutrino flux at high neutrino energies can be much larger than for the conventional c → D fragmentation. The latter can constitute a sizeable background for the cosmic neutrinos claimed to be observed recently by the IceCube Observatory.

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