Energy spectrum of cosmic-ray muons

Komori, H.; Mitsui, K.

doi:10.1007/bf02507746

Cited by 13 publications

(3 citation statements)

References 15 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…There are many calculations [1][2][3][4][5][6][7][8][9] along these lines and their validity should be finally examined for the comparison momentum spectrum of the cosmic-ray muons and/or its charge ratio. However, almost all previous experiments were performed and reported in narrow zenith angular ranges, in the near vertical or near horizontal directions [13][14][15][16][17][18][19][20][21][22][23].…”

Section: Introductionmentioning

confidence: 99%

Measurements of muons at sea level

Tsuji

Katayama

Okei

et al. 1998

J. Phys. G: Nucl. Part. Phys.

View full text Add to dashboard Cite

We measure muon intensities at sea level by using the OKAYAMA cosmic-ray telescope in detail. Measured muons are also contained in the low-momentum region where they are strongly affected by geomagnetic field effects including the east-west effect. We report the zenith and azimuthal angular dependence of conventional muons in the momentum range 1.5-250 GeV/c in the zenith angular range 0 • -81 • . S Tsuji et al

show abstract

Section: Introductionmentioning

confidence: 99%

Measurements of muons at sea level

Tsuji

Katayama

Okei

et al. 1998

J. Phys. G: Nucl. Part. Phys.

View full text Add to dashboard Cite

show abstract

“…(ν e + νe ) fluxes at θ = 0 • , respectively. There also appear the analytical calculations made by Mitsui et al [12] (open triangle) and Butkevich et al [1] (crosses) and simulation ones made by Agrawal et al [13] (open square). Figures 2 and 4 represent the same fluxes but at θ = 87 • .…”

Section: Discussionmentioning

confidence: 78%

An operator method to solve transport equations of atmospheric neutrinos

Portella¹,

Oliveira²,

Lima³

2008

J. Phys. G: Nucl. Part. Phys.

View full text Add to dashboard Cite

Atmospheric neutrinos are analytically computed using an operator formalism to solve their transport equations. It is based on depth-like ordered exponential operators similar to those used by Feynman in some physical problems. Formal solutions are found for a general primary cosmic ray spectrum, G(E), and they become simplified expressions when we assume a power-law dependence on energy. A complete treatment is given for the kaon case by introducing the K0L component. The problem of muon polarization is also taken into account. A comparison among our results with analytical and simulation calculations and experimental data is made. The agreement is quite good for energies above 10 GeV.

show abstract

“…The d2Nyi/d$ dE (i = p, e) is derived from the (vi + Vi) flux, d2N,,i+;i)/d$ dE, if the ratio y / V i is known. The recent results from ref [14]. have been used for d2N(,i+ji,/d+dE.…”

mentioning

confidence: 99%

Neutrino-Resonant Oscillations in the Earth, and the ν _e /ν _μ Ratio in Upward-Going Atmospheric Neutrino Fluxes

Minorikawa

Mitsui

1990

Europhys. Lett.

View full text Add to dashboard Cite

We evaluate the conversion probability for neutrinos by solving the evolution equations with a numerical method, taking into account a density distribution of the Earth, and calculate an upward-going neutrino flux ratio (νe +ν̄e)/(νμ +ν̄μ) by using the recent values of atmospheric neutrino fluxes, where the updated ratios νμ/ν̄μ and νe/ν̄e have been taken into account. It is found that the ratio, including the effect of neutrino-resonant oscillations, can well explain the Kamiokande data for ϕ = 0° and 30°, and the NUSEX and the Fréjus data (averaged over ϕ) at energies around 1 GeV, whilst the ratio with no neutrino oscillations or with the muon polarization cannot explain the measured data.

show abstract

Energy spectrum of cosmic-ray muons

Cited by 13 publications

References 15 publications

Measurements of muons at sea level

Measurements of muons at sea level

An operator method to solve transport equations of atmospheric neutrinos

Neutrino-Resonant Oscillations in the Earth, and the ν _e /ν _μ Ratio in Upward-Going Atmospheric Neutrino Fluxes

Contact Info

Product

Resources

About

Energy spectrum of cosmic-ray muons

Cited by 13 publications

References 15 publications

Measurements of muons at sea level

Measurements of muons at sea level

An operator method to solve transport equations of atmospheric neutrinos

Neutrino-Resonant Oscillations in the Earth, and the ν e /ν μ Ratio in Upward-Going Atmospheric Neutrino Fluxes

Contact Info

Product

Resources

About

Neutrino-Resonant Oscillations in the Earth, and the ν _e /ν _μ Ratio in Upward-Going Atmospheric Neutrino Fluxes