Muonless π0-Production by Muon-Neutrinos and -Antineutrinos

Neutrinos are neutral leptons and there exist three types of neutrinos (electron neutrinos νe, muon neutrinos νµ and tau neutrinos ντ). These classifications are referred to as neutrinos’s “flavors”. Oscillations between the different flavors are known as neutrino oscillations, which occurs when neutrinos have mass and non-zero mixing. Neutrino mixing is governed by the PMNS mixing matrix. The PMNS mixing matrix is constructed as the product of three independent rotations. With that, we can describe the numerical parameters of the matrix in a graphical form called the unitary triangle, giving rise to CP violation. We can calculate the four parameters of the mixing matrix to draw the unitary triangle. The area of the triangle is a measure of the amount of CP violation.

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Atmospheric Neutrinos

Advances in High Energy Physics ◽

10.1155/2012/504715 ◽

2012 ◽

Vol 2012 ◽

pp. 1-24 ◽

Cited By ~ 7

Author(s):

Takaaki Kajita

Keyword(s):

Atmospheric Neutrino ◽

Decay Chain ◽

Muon Neutrinos ◽

Atmospheric Neutrinos ◽

Electron Neutrinos ◽

Tau Neutrinos ◽

Decay Products ◽

Charged Pions ◽

Neutrino Experiments ◽

Energy Dependent

Atmospheric neutrinos are produced as decay products in hadronic showers resulting from collisions of cosmic rays with nuclei in the atmosphere. Electron-neutrinos and muon-neutrinos are produced mainly by the decay chain of charged pions to muons to electrons. Atmospheric neutrino experiments observed zenith angle and energy-dependent deficit of muon-neutrino events. It was found that neutrino oscillations between muon-neutrinos and tau-neutrinos explain these data well. This paper discusses atmospheric neutrino experiments and the neutrino oscillation studies with these neutrinos.

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SEARCH FOR HIGH-ENERGY MUON NEUTRINOS FROM THE “NAKED-EYE” GRB 080319B WITH THE IceCube NEUTRINO TELESCOPE

The Astrophysical Journal ◽

10.1088/0004-637x/701/2/1721 ◽

2009 ◽

Vol 701 (2) ◽

pp. 1721-1731 ◽

Cited By ~ 23

Author(s):

R. Abbasi ◽

Y. Abdou ◽

T. Abu-Zayyad ◽

J. Adams ◽

J. A. Aguilar ◽

...

Keyword(s):

High Energy ◽

Neutrino Telescope ◽

Muon Neutrinos ◽

Naked Eye ◽

High Energy Muon

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The DsTau Experiment: A Study for Tau-Neutrino Production

Particles ◽

10.3390/particles3010013 ◽

2020 ◽

Vol 3 (1) ◽

pp. 164-168

Author(s):

Mădălina Mihaela Miloi ◽

Keyword(s):

Cross Section ◽

Present Report ◽

Neutrino Flux ◽

Interaction Cross Section ◽

Muon Neutrinos ◽

Tau Neutrino ◽

Neutrino Sector ◽

Neutrino Production ◽

Lepton Universality ◽

Tau Neutrinos

For clarifying the validity of the Lepton Universality hypothesis, one of the fundamental statements of the Standard Model, the interaction cross section for all three flavors of leptons have to be known with high precision. In neutrino sector, for electron and muon neutrinos, the interaction cross section is known fairly well, but for tau neutrino only poor estimations exist. In particular, the most direct measurement by the DONuT experiment was performed with rather poor accuracy due to low statistics and an uncertainty of the tau neutrino flux. The DsTau experiment proposes to study tau-neutrino production process and thus to improve significantly the accuracy of calculations of tau neutrino flux for neutrino accelerator experiments. To study reactions providing most of tau neutrinos, the experiment uses a setup based on high resolution nuclear emulsions, capable to register short lived particle decays created in proton-nucleus interactions. The present report is an overview of the DsTau experiment together with some of the preliminary results from the pilot run.

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