O. I. González-Reina
A5080011042- Neutrino Physics Research
- Particle physics theoretical and experimental studies
- Dark Matter and Cosmic Phenomena
- Astrophysics and Cosmic Phenomena
- Atomic and Subatomic Physics Research
- Radiation Detection and Scintillator Technologies
- Nuclear physics research studies
- Electron Spin Resonance Studies
- Magnetic confinement fusion research
- Particle accelerators and beam dynamics
Universidad Nacional Autónoma de México
2021-2025
The SNO+ experiment is located 2 km underground at SNOLAB in Sudbury, Canada. A low background search for neutrinoless double beta (0νββ) decay will be conducted using 780 tonnes of liquid scintillator loaded with 3.9 natural tellurium, corresponding to 1.3 130Te. This paper provides a general overview the experiment, including detector design, construction process plants, commissioning efforts, electronics upgrades, data acquisition systems, and calibration techniques. collaboration reusing...
The SNO+ Collaboration reports the first evidence of reactor antineutrinos in a Cherenkov detector. nearest nuclear reactors are located 240 km away Ontario, Canada. This analysis uses events with energies lower than any previous large water Two analytical methods used to distinguish from background 190 days data and yield consistent for combined significance 3.5σ.
The direction of individual <a:math xmlns:a="http://www.w3.org/1998/Math/MathML" display="inline"><a:mrow><a:mmultiscripts><a:mrow><a:mi mathvariant="normal">B</a:mi></a:mrow><a:mprescripts/><a:none/><a:mrow><a:mn>8</a:mn></a:mrow></a:mmultiscripts></a:mrow></a:math> solar neutrinos has been reconstructed using the <d:math xmlns:d="http://www.w3.org/1998/Math/MathML" display="inline"><d:mrow><d:mi>SNO</d:mi><d:mo>+</d:mo></d:mrow></d:math> liquid scintillator detector. Prompt, directional...
Abstract The SNO $$+$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mo>+</mml:mo> </mml:math> collaboration reports its first spectral analysis of long-baseline reactor antineutrino oscillation using 114 tonne-years data. Fitting the neutrino probability to observed energy spectrum yields constraints on mass-squared difference $$\Delta m^2_{21}$$ <mml:mrow> <mml:mi>Δ</mml:mi> <mml:msubsup> <mml:mi>m</mml:mi> <mml:mn>21</mml:mn> <mml:mn>2</mml:mn> </mml:msubsup> </mml:mrow>...
This paper reports results from a search for single and multi-nucleon disappearance the $^{16}$O nucleus in water within \snoplus{} detector using all of available data. These so-called "invisible" decays do not directly deposit energy but are instead detected through their subsequent nuclear de-excitation gamma-ray emission. New limits given partial lifetimes: $\tau(n\rightarrow inv) > 9.0\times10^{29}$ years, $\tau(p\rightarrow 9.6\times10^{29}$ $\tau(nn\rightarrow 1.5\times10^{28}$...
SNO+ is a large-scale liquid scintillator experiment with the primary goal of searching for neutrinoless double beta decay, and located approximately 2 km underground in SNOLAB, Sudbury, Canada. The detector acquired data two years as pure water Cherenkov detector, starting May 2017. During this period, optical properties were measured situ using deployed light diffusing sphere, improving model energy response systematic uncertainties. parameters included attenuation coefficients, effective...
Abstract A liquid scintillator consisting of linear alkylbenzene as the solvent and 2,5-diphenyloxazole fluor was developed for SNO+ experiment. This mixture chosen it is compatible with acrylic has a competitive light yield to pre-existing scintillators while conferring other advantages including longer attenuation lengths, superior safety characteristics, chemical simplicity, ease handling, logistical availability. Its properties have been extensively characterized are presented here. now...
The SNO+ collaboration reports its first spectral analysis of long-baseline reactor antineutrino oscillation using 114 tonne-years data. Fitting the neutrino probability to observed energy spectrum yields constraints on mass-squared difference $\Delta m^2_{21}$. In ranges allowed by previous measurements, best-fit m^2_{21}$ is (8.85$^{+1.10}_{-1.33}$) $\times$ 10$^{-5}$ eV$^2$. This measurement continuing in next phases and expected surpass present global precision with about three years
The SNO+ detector operated initially as a water Cherenkov detector. implementation of sealed covergas system midway through data taking resulted in significant reduction the activity $^{222}$Rn daughters and allowed lowest background to solar electron scattering signal above 5 MeV achieved date. This paper reports an updated phase $^8$B neutrino analysis with total livetime 282.4 days threshold 3.5 MeV. flux is found be...
The <a:math xmlns:a="http://www.w3.org/1998/Math/MathML" display="inline"><a:mrow><a:mi>SNO</a:mi><a:mo>+</a:mo></a:mrow></a:math> detector operated initially as a water Cherenkov detector. implementation of sealed cover gas system midway through data taking resulted in significant reduction the activity <c:math xmlns:c="http://www.w3.org/1998/Math/MathML"...
Abstract Supernovae emit large fluxes of neutrinos, which can be detected by detectors on Earth. Future multi-kiloton scale will sensitive to several neutrino interaction channels, with thousands events expected if a supernova emerges in the galaxy neighborhood. There are limited number tools study rates although plethora available models exist. EstrellaNueva is an open-source software calculate neutrinos using target materials typical compositions, and additional compositions easily added....