scholarly journals Study of atmospheric neutrino interactions and search for nucleon decay in Soudan 2

1995 ◽  
Author(s):  
William R. Leeson
Keyword(s):  
Atmospheric Neutrino ◽  
Neutrino Interactions ◽  
Nucleon Decay

RESULTS FROM SUPER-KAMIOKANDE ON ATMOSPHERIC NEUTRINO AND LIMITS ON MATTER INSTABILITY

2003 ◽  
Vol 18 (22) ◽  
pp. 3809-3819
Author(s):  
◽  
C. SAJI
Keyword(s):  
Atmospheric Neutrino ◽  
Tau Neutrino ◽  
Neutrino Interactions ◽  
Nucleon Decay ◽  
Flavor Oscillation ◽  
Lower Limits ◽  
Neutrino Decay

Latest atmospheric neutrino results from 1489 days exposure of the Super-Kamiokande detector are presented. Our data are well explained by two flavor νμ↔ντ oscillations. In the three flavor oscillation case, the result shows no evidence for non zero θ13. Other models, ντ-νs admixture and neutrino decay, are strongly constrained. Moreover, the appearance searches for tau neutrino interactions are performed. Our data are consistent with ντ appearance. For the nucleon decay, p → e+π0 and [Formula: see text] are searched for, but no evidence for nucleon decays has been found. Experimental lower limits for nucleon partial lifetime are obtained to be 5.7×1033 years for p → e+π0 and 2.0×1033 years for [Formula: see text].

scholarly journals Recent Results from IceCube

2018 ◽  
Vol 46 ◽  
pp. 1860048 ◽  
Author(s):  
Dawn Williams
Keyword(s):  
Energy Range ◽  
Neutrino Oscillation ◽  
Atmospheric Neutrino ◽  
High Energy ◽  
South Pole ◽  
Neutrino Interactions ◽  
Diffuse Flux ◽  
High Energy Neutrinos

The IceCube Neutrino Observatory is a cubic kilometer detector located at the geographic South Pole. IceCube was designed to detect high-energy neutrinos from cosmic sources, and the DeepCore extension of IceCube enables the study of atmospheric neutrino interactions down to energies of a few GeV. IceCube has detected a diffuse flux of neutrinos in the energy range from 100 TeV to several PeV, the properties of which are inconsistent with an atmospheric origin, and has also published competitive limits on atmospheric neutrino oscillation parameters and other neutrino properties. This paper presents the latest results from IceCube and prospects for future upgrades and expansions of the detector.

scholarly journals The ICARUS experiment

2018 ◽  
Vol 182 ◽  
pp. 02042 ◽  
Author(s):  
Christian Farnese ◽  
Keyword(s):  
Cosmic Rays ◽  
Present Status ◽  
Sterile Neutrino ◽  
Atmospheric Neutrino ◽  
Liquid Argon ◽  
Experimental Results ◽  
Neutrino Beam ◽  
Present Contribution ◽  
Neutrino Interactions ◽  
Narrow Region

The 760 ton liquid argon ICARUS T600 detector performed a successful threeyear physics run at the underground LNGS laboratories, studying neutrino oscillations with the CNGS neutrino beam and searching for atmospheric neutrino interactions in cosmic rays. A sensitive search for LSND like anomalous ve appearance has been performed, contributing to constrain the allowed parameters to a narrow region around Δm2 ~ eV2, where all the experimental results can be coherently accommodated at 90% C.L.. After a significant overhauling, the T600 detector will be exposed at Fermilab to the Booster Neutrino Beam acting as the far detector, in order to search for sterile neutrino within the SBN program. In the present contribution, the ICARUS LNGS achievements, the present status of the detector and the ongoing analyses also finalized to the next physics run at Fermilab will be addressed.

scholarly journals Measurement of neutron production in atmospheric neutrino interactions at the Sudbury Neutrino Observatory

2019 ◽  
Vol 99 (11) ◽  
Author(s):  
B. Aharmim ◽  
S. N. Ahmed ◽  
A. E. Anthony ◽  
N. Barros ◽  
E. W. Beier ◽  
...  
Keyword(s):  
Atmospheric Neutrino ◽  
Neutron Production ◽  
Sudbury Neutrino Observatory ◽  
Neutrino Interactions

Calculation of Atmospheric Neutrino-Induced Backgrounds in a Nucleon-Decay Search

1986 ◽  
Vol 57 (16) ◽  
pp. 1986-1989 ◽  
Author(s):  
T. J. Haines ◽  
R. M. Bionta ◽  
G. Blewitt ◽  
C. B. Bratton ◽  
D. Casper ◽  
...  
Keyword(s):  
Atmospheric Neutrino ◽  
Nucleon Decay

scholarly journals On the interpretation of the atmospheric neutrino data in terms of flavor changing neutrino interactions

2000 ◽  
Vol 2000 (07) ◽  
pp. 006-006 ◽  
Author(s):  
Nicolao Fornengo ◽  
M. Concha Gonzalez-Garcia ◽  
Jose W. Furtado Valle
Keyword(s):  
Atmospheric Neutrino ◽  
Neutrino Interactions ◽  
Flavor Changing

THE SEARCH FOR NUCLEON DECAY AT SUPER-KAMIOKANDE

2001 ◽  
Vol 16 (supp01b) ◽  
pp. 855-859 ◽  
Author(s):  
◽  
KENNETH S. GANEZER
Keyword(s):  
Confidence Level ◽  
Atmospheric Neutrino ◽  
Branching Ratio ◽  
Decay Modes ◽  
Nucleon Decay ◽  
Supersymmetric Theories ◽  
Lower Limits

We have analyzed 1144 days of Super-Kamiokande data for 13 of the more than 40 possible nucleon decay modes. We have studied p→e+π0, and twelve other two particle B-L conserving decay modes including those with kaons that are preferred in supersymmetric theories. Most modes are currently free of candidate events. In all cases the number of candidates is consistent with atmospheric neutrino induced backgrounds. We have calculated 90% confidence level single sided lower limits on the lifetime of the neutron and proton (divided by the unknown branching ratio) for the studied modes. All of our lower limits are higher than previous best limits by a factor of 2-10. Our limit for p→e+π0 is now 4.4×1033 years.

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