Review of Atmospheric Neutrinos
نویسنده
چکیده
In this talk I review measurements and calculations of the flux of neutrinos produced by interactions of cosmic rays in the atmosphere. The main reason for interest in this subject is the apparent anomaly between the predicted and the observed ratio of νe to νμ. With the advent of Super-Kamiokande, we are on the threshold of an order of magnitude increase in the amount of data available to study the problem. My goal in this talk is to describe the current status of the subject, both for contained events and for neutrino-induced upward muons.
منابع مشابه
ar X iv : h ep - p h / 02 03 27 2 v 2 3 0 M ar 2 00 2 Flux of Atmospheric Neutrinos 1 Flux of Atmospheric Neutrinos ∗
Atmospheric neutrinos produced by cosmic-ray interactions in the atmosphere are of interest for several reasons. As a beam for studies of neutrino oscillations they cover a range of parameter space hitherto unexplored by accelerator neutrino beams. The atmospheric neutrinos also constitute an important background and calibration beam for neutrino astronomy and for the search for proton decay an...
متن کاملar X iv : h ep - p h / 02 03 27 2 v 1 2 9 M ar 2 00 2 Flux of Atmospheric Neutrinos 1 Flux of Atmospheric Neutrinos ∗
Atmospheric neutrinos produced by cosmic-ray interactions in the atmosphere are of interest for several reasons. As a beam for studies of neutrino oscillations they cover a range of parameter space hitherto unexplored by accelerator neutrino beams. The atmospheric neutrinos also constitute an important background and calibration beam for neutrino astronomy and for the search for proton decay an...
متن کاملAstrophysical and Cosmological Neutrinos
— We review the role of massive neutrinos in astrophysics and cosmol-ogy, assuming that the oscillation interpretation of solar and atmospheric neutrinos is correct. In particular, we discuss cosmological mass limits, neutrino flavor oscillations in the early universe, leptogenesis, and neutrinos in core-collapse supernovae.
متن کاملSeasonal variation of atmospheric leptons as a probe of charm.
The intensity of TeV atmospheric muons and neutrinos depends on the temperature in the stratosphere. We show that the energy dependence in the 100 TeV range of the correlation with temperature is sensitive to the fraction of muons and neutrinos from decay of charmed hadrons. We discuss the prospects for using the temperature effect as observed in gigaton neutrino detectors to measure the charm ...
متن کاملAtmospheric Neutrino Flux: A Review of Calculations
The concept of using the atmospheric neutrino beam to look for neutrino oscillations is illustrated in Fig. 1 [1]. With a single detector it is possible simultaneously to cover a range of pathlengths from ∼ 10 to ∼ 10 km, corresponding respectively to downward moving and upward moving neutrinos. The atmospheric neutrino beam has an energy spectrum determined by the steeply falling primary cosmi...
متن کاملAnalysis of oscillations of atmospheric neutrinos
We briefly review the current status of standard oscillations of atmospheric neutrinos in schemes with two, three, and four flavor mixing. It is shown that, although the pure νμ → ντ channel provides an excellent 2ν fit to the data, one cannot exclude, at present, the occurrence of additional subleading νμ → νe oscillations (3ν schemes) or of sizable νμ → νs oscillations (4ν schemes). It is als...
متن کامل