Optical simulations of a liquid scintillator detector for reactor neutrino experiments

2011 ◽  
Vol 221 ◽  
pp. 396
Author(s):  
Gabriel Orebi Gann ◽  
Stanley Seibert ◽  
Christopher Tunnell

2007 ◽  
Vol 2007 (01) ◽  
pp. 053-053 ◽  
Author(s):  
Joachim Kopp ◽  
Manfred Lindner ◽  
Alexander Merle ◽  
Mark Rolinec


2018 ◽  
Vol 46 ◽  
pp. 1860001
Author(s):  
J. P. Ochoa-Ricoux

Nuclear reactors provide an excellent environment for studying neutrinos and continue to play a critical role in unveiling the secrets of these elusive particles. A rich experimental program with reactor antineutrinos is currently ongoing, and leads the way in precision measurements of several oscillation parameters and in searching for new physics, such as the existence of light sterile neutrinos. Ongoing experiments have also been able to measure the flux and spectral shape of reactor antineutrinos with unprecedented statistics and as a function of core fuel evolution, uncovering anomalies that will lead to new physics and/or to an improved understanding of antineutrino emission from nuclear reactors. The future looks bright, with an aggressive program of next generation reactor neutrino experiments that will go after some of the biggest open questions in the field. This includes the JUNO experiment, the largest liquid scintillator detector ever constructed which will push the limits of this detection technology.



2011 ◽  
Vol 26 (27) ◽  
pp. 2051-2063 ◽  
Author(s):  
ANIKET JOGLEKAR ◽  
SUPRABH PRAKASH ◽  
SUSHANT K. RAUT ◽  
S. UMA SANKAR

We study the physics potential of a neutrino superbeam experiment with a 2540 km baseline. We assume a neutrino beam similar to the NuMI beam in medium energy configuration. We consider a 100 kton totally active scintillator detector at a 7 mr off-axis location. We find that such a configuration has outstanding hierarchy discriminating capability. In conjunction with the data from the present reactor neutrino experiments, it can determine the neutrino mass hierarchy at 3σ level in less than 5 years, if sin22θ13≥0.01, running in the neutrino mode alone. As a stand alone experiment, with a five-year neutrino run and a five-year anti-neutrino run, it can determine nonzero θ13 at 3σ level if sin22θ13≥7×10-3 and hierarchy at 3σ level if sin22θ13≥8×10-3. This data can also distinguish δ CP = π/2 from the CP conserving values of 0 and π, for sin22θ13≥0.02.





2018 ◽  
Vol 13 (06) ◽  
pp. P06023-P06023 ◽  
Author(s):  
J. Ashenfelter ◽  
A.B. Balantekin ◽  
H.R. Band ◽  
C.D. Bass ◽  
D.E. Bergeron ◽  
...  




2021 ◽  
Vol 2021 (3) ◽  
Author(s):  
Yong Du ◽  
Hao-Lin Li ◽  
Jian Tang ◽  
Sampsa Vihonen ◽  
Jiang-Hao Yu

Abstract The Standard Model Effective Field Theory (SMEFT) provides a systematic and model-independent framework to study neutrino non-standard interactions (NSIs). We study the constraining power of the on-going neutrino oscillation experiments T2K, NOνA, Daya Bay, Double Chooz and RENO in the SMEFT framework. A full consideration of matching is provided between different effective field theories and the renormalization group running at different scales, filling the gap between the low-energy neutrino oscillation experiments and SMEFT at the UV scale. We first illustrate our method with a top- down approach in a simplified scalar leptoquark model, showing more stringent constraints from the neutrino oscillation experiments compared to collider studies. We then provide a bottom-up study on individual dimension-6 SMEFT operators and find NSIs in neutrino experiments already sensitive to new physics at ∼20 TeV when the Wilson coefficients are fixed at unity. We also investigate the correlation among multiple operators at the UV scale and find it could change the constraints on SMEFT operators by several orders of magnitude compared with when only one operator is considered. Furthermore, we find that accelerator and reactor neutrino experiments are sensitive to different SMEFT operators, which highlights the complementarity of the two experiment types.



2009 ◽  
Vol 79 (7) ◽  
Author(s):  
André de Gouvêa ◽  
Thomas Wytock


2021 ◽  
Vol 81 (1) ◽  
Author(s):  
Pilar Coloma ◽  
Patrick Huber ◽  
Thomas Schwetz

AbstractA considerable experimental effort is currently under way to test the persistent hints for oscillations due to an eV-scale sterile neutrino in the data of various reactor neutrino experiments. The assessment of the statistical significance of these hints is usually based on Wilks’ theorem, whereby the assumption is made that the log-likelihood is $$\chi ^2$$ χ 2 -distributed. However, it is well known that the preconditions for the validity of Wilks’ theorem are not fulfilled for neutrino oscillation experiments. In this work we derive a simple asymptotic form of the actual distribution of the log-likelihood based on reinterpreting the problem as fitting white Gaussian noise. From this formalism we show that, even in the absence of a sterile neutrino, the expectation value for the maximum likelihood estimate of the mixing angle remains non-zero with attendant large values of the log-likelihood. Our analytical results are then confirmed by numerical simulations of a toy reactor experiment. Finally, we apply this framework to the data of the Neutrino-4 experiment and show that the null hypothesis of no-oscillation is rejected at the 2.6 $$\sigma $$ σ level, compared to 3.2 $$\sigma $$ σ obtained under the assumption that Wilks’ theorem applies.



Sign in / Sign up

Export Citation Format

Share Document