Journal•ISSN: 1063-7788
Physics of Atomic Nuclei
American Institute of Physics
About: Physics of Atomic Nuclei is an academic journal published by American Institute of Physics. The journal publishes majorly in the area(s): Neutron & Nucleon. It has an ISSN identifier of 1063-7788. Over the lifetime, 6055 publications have been published receiving 29908 citations.
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TL;DR: In this paper, the authors measured the solar neutrinos from the decay of 8B via the charged current reaction on deuterium and by the elastic scattering (ES) of electrons at the Sudbury Neutrino Observatory (SNO).
Abstract: Solar neutrinos from the decay of 8B have been detected at the Sudbury Neutrino Observatory (SNO) via the charged current (CC) reaction on deuterium and by the elastic scattering (ES) of electrons. The CC reaction is sensitive exclusively to ν
e, while the ES reaction also has a small sensitivity to ν
μ and ν
τ. The flux of ν
e from 8B decay measured by the CC reaction rate is φ
CC(ν
e
)=[1.75±0.07(stat.)
−0.11
+0.12
(syst.)×0.05(theor.)]×106cm−2s−1. Assuming no flavor transformation, the flux inferred from the ES reaction rate is φ
ES(ν
x
)=[2.39±0.34(stat.)
−0.14
+0.16
(syst.)]×106cm−2s−1. Comparison of φ
CC(ν
e) to the Super-Kamiokande collaboration’s precision value of φ
ES(ν
x) yields a 3.3σ difference, assuming the systematic uncertainties are normally distributed, providing evidence that there is a nonelectron flavor active neutrino component in the solar flux. The total flux of active 8B neutrinos is thus determined to be (5.44±0.99)×106 cm−2 s−1, in close agreement with the predictions of solar models.
367 citations
TL;DR: In this paper, the status of low-energy collisions in the xenon bubble chamber DIANA was investigated and the spectrum of the antidecuplet of exotic pentaquark baryons was analyzed.
Abstract: The status of our investigation of low-energy K
+Xe collisions in the xenon bubble chamber DIANA is reported In the charge-exchange reaction K
+Xe → K
0
pXe′, the spectrum of K
0
p effective mass shows a resonant enhancement with M=1539±2 MeV/c
2 and Γ≤9 MeV/c
2 The statistical significance of the enhancement is near 44σ The mass and width of the observed resonance are consistent with expectations for the lightest member of the antidecuplet of exotic pentaquark baryons, as predicted in the framework of the chiral soliton model
293 citations
TL;DR: DECAY4 as discussed by the authors is a computer code developed to generate initial energy, time, and angular distributions of particles emitted in radioactive decays of nuclides and in nuclear (atomic) deexcitations.
Abstract: The computer code DECAY4 is developed to generate initial-energy, time, and angular distributions of particles emitted in radioactive decays of nuclides and in nuclear (atomic) deexcitations. Data for describing nuclear-and atomic-decay schemes are taken from the ENSDF and EADL database libraries. By way of example, the DECAY4 code is applied to describing several underground experiments.
195 citations
TL;DR: In this paper, the results obtained in the development of scintillating double-beta-decay bolometers were presented, where the scintillation light was measured through a second independent bolometer.
Abstract: We present the results obtained in the development of scintillating double-beta-decay bolometers. Several Mo and Cd based crystals were tested with the bolometric technique. The scintillation light was measured through a second independent bolometer. A 140-g CdWO4 crystal was run in a 417-h live time measurement. Thanks to the scintillation light, the α background is easily discriminated, resulting in zero counts above the 2615-keV γ line of 208Tl. These results, combined with an extreme easy light detector operation, represent the first tangible proof demonstrating the feasibility of this kind of technique.
169 citations
TL;DR: In this article, the same energy and momentum assumptions of neutrino oscillations are discussed, and the applicability limits of the stationary-source approximation of the oscillation probability in the wave-packet approach are discussed.
Abstract: Despite the theory of neutrino oscillations being rather old, some of its basic issues are still being debated in the literature We discuss a number of such issues, including the relevance of the “same energy” and “same momentum” assumptions, the role of quantum-mechanical uncertainty relations in neutrino oscillations, the dependence of the coherence and localization conditions that ensure the observability of neutrino oscillations on neutrino energy and momentum uncertainties, the question of (in)dependence of the oscillation probabilities on the neutrino production and detection processes, and the applicability limits of the stationary-source approximation We also develop a novel approach to calculation of the oscillation probability in the wave-packet approach, based on the summation/integration conventions different from the standard one, which allows a new insight into the “same energy” vs “same momentum” problem We also discuss a number of apparently paradoxical features of the theory of neutrino oscillations
151 citations