Charged- and neutral-current solar-neutrino cross sections for heavy-water Cherenkov detectors

1992 ◽  
Vol 45 (4) ◽  
pp. 1982-1987 ◽  
Author(s):  
S. Ying ◽  
W. C. Haxton ◽  
E. M. Henley
Keyword(s):  
Heavy Water ◽  
Cross Sections ◽  
Solar Neutrino ◽  
Neutral Current ◽  
Cherenkov Detectors ◽  
Water Cherenkov Detectors

Solar-neutrino neutral-current detection methods in the Sudbury neutrino observatory

1991 ◽  
Vol 69 (11) ◽  
pp. 1309-1316 ◽  
Author(s):  
C. K. Hargrove ◽  
D. J. Paterson
Keyword(s):  
Heavy Water ◽  
Solar Neutrino ◽  
Neutral Current ◽  
Solar Neutrinos ◽  
Light Nuclei ◽  
Detection Methods ◽  
Sudbury Neutrino Observatory ◽  
Original Design ◽  
Γ Rays ◽  
Current Detection

The Sudbury Neutrino Observatory will study the solar-neutrino problem through the detection of charged-current (CC), neutral-current (NC), and elastic-scattering (ES) interactions of solar neutrinos with heavy water. The measurement of the NC rate relative to the CC rate provides a nearly model-independent method of observing neutrino oscillations. The NC interaction breaks up the deuteron producing a neutron and a proton. The interaction rate in the original design is measured by observing Čerenkov light from showers produced by neutron-capture γ rays from the capture of the NC neutrons by a selected additive to the heavy water. These signals overlap the CC and ES signals, so that the measurement of the NC rate requires the subtraction of two signals obtained at different times. This paper describes our investigation of an alternate detection method in which the thermalized neutrons are captured by (n, α) or (n, p) reactions on light nuclei. The resulting charged-particle products are uniquely detected by scintillators or proportional counters, completely separating this NC signal from the CC and ES Čerenkov signals, thus simplifying its measurement, improving its significance, and allowing observation of otherwise unobservable short-term NC fluctuations. Although background rates for the new techniques have not yet been determined, the experimental advantages justify further development work.

scholarly journals Measurement of the Q2 dependence of the charged and neutral current cross sections in e±p scattering at HERA

1996 ◽  
Vol 379 (1-4) ◽  
pp. 319-329 ◽  
Author(s):  
S. Aid ◽  
V. Andreev ◽  
B. Andrieu ◽  
R.-D. Appuhn ◽  
M. Arpagaus ◽  
...  
Keyword(s):  
Cross Sections ◽  
Neutral Current

scholarly journals WHAT CAN SNO NEUTRAL CURRENT RATE TEACH US ABOUT THE SOLAR NEUTRINO ANOMALY

2002 ◽  
Vol 17 (22) ◽  
pp. 1455-1464 ◽  
Author(s):  
ABHIJIT BANDYOPADHYAY ◽  
SANDHYA CHOUBEY ◽  
SRUBABATI GOSWAMI ◽  
D. P. ROY
Keyword(s):  
Neutrino Oscillation ◽  
Solar Neutrino ◽  
Survival Probability ◽  
Neutral Current ◽  
Neutrino Flux ◽  
Mixing Parameters ◽  
Active Neutrino ◽  
Quantitative Analyses

We investigate how the anticipated neutral current rate from SNO will sharpen our understanding of the solar neutrino anomaly. Quantitative analyses are performed with representative values of this rate in the expected range of 0.8–1.2. This would provide a 5–10σ signal for νe transition into a state containing an active neutrino component. Assuming this state to be purely active one can estimate both the 8 B neutrino flux and the νe survival probability to a much higher precision than currently possible. Finally the measured value of the NC rate will have profound implications for the mass and mixing parameters of the solar neutrino oscillation solution.

scholarly journals Coherent and incoherent channels of neutrino-nucleus reactions

2020 ◽  
Vol 16 ◽  
pp. 75
Author(s):  
P. C. Divari ◽  
T. S. Kosmas
Keyword(s):  
Cross Sections ◽  
Neutral Current ◽  
Charged Current ◽  
Preliminary Results ◽  
Scattering Cross ◽  
Neutrino Detection ◽  
Intermediate Energies ◽  
Nucleus Scattering ◽  
Scattering Cross Sections

Inelastic neutrino-nucleus scattering cross sections at low and intermediate energies are investigated for currently interesting nuclei employed in neutrino-detection experiments. This is an extension to charged current processes of our previous QRPA calculations referred to neutral current neutrino/antineutrino-nucleus reactions. Our preliminary results for the reactions 56Fe(νe, e−)56Co and 40Ar(νe, e−)40K compare rather well with similar calculations obtained in the context of continuum RPA.

scholarly journals Cross section calculations for neutrino-nucleus reactions at low and intermediate energies.

2020 ◽  
Vol 15 ◽  
pp. 249
Author(s):  
V. Ch. Chasioti ◽  
T. S. Kosmas ◽  
P. Divari
Keyword(s):  
Cross Sections ◽  
Neutral Current ◽  
Axial Vector ◽  
Random Phase ◽  
Neutrino Energy ◽  
Reaction Cross ◽  
Neutrino Experiment ◽  
Final State ◽  
Quasi Particle ◽  
Intermediate Energies

Inelastic neutrino-nucleus reaction cross sections are studied focusing on the neutral current processes. Particularly, we investigate the angular and initial neutrino-energy dependence of the differential and integrated cross sections for low and intermediate energies of the incoming neutrino (or antineutrino). Contributions coming from both, the vector and axial-vector components of the corresponding hadronic currents have been included. The initial and final state nuclear wave-functions have been calculated in the context of the Quasi-particle Random Phase Approximation (QRPA) tested on the reproducibility of the low-lying energy spectrum (up to about 5 MeV) of the studied nuclei. The results presented here refer to the nuclear isotopes 16O and 98Mo. As it is well known, O plays a significant role in supernova evolution phenomena and Mo is used as a target in the MOON neutrino experiment at Japan.

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