White paper report on using nuclear reactors to search for a value of theta13

Anderson, K. J.; Anjos, J. C. dos; Ayres, D. S.; Beacom, J. F.; Bediaga, I.; Bellefon, A. de; Berger, B. E.; Bilenky, S. M.; Blucher, E.; Bolton, T.; Buck, C.; Bugg, W.; Busenitz, J.; Choubey, Sandhya; Conrad, J. M.; Cribier, M.; Dadoun, O.; Dalnoki‐Veress, F.; Decowski, M. P.; Gouvêa, André de; Demutrh, D.; Dessages-Ardellier, F.; Efremenko, Y.; Feilitzsch, F. von; Finley, D. A.; Formaggio, J. A.; Freedman, S. J.; Fujikawa, B.K.; Garbini, M.; Giusti, P.; Göger‐Neff, M.; Goodman, M. C.; Gray, F.; Grieb, C.; Grudziński, J.; Guarino, V.; Hartmann, F.; Hagner, C.; Heeger, K.M.; Hofmann, W.; Horton-Smith, G. A.; Huber, Patrick; Инжечик, Л. В.; Jochum, J.; Jöstlein, H.; Kadel, R.W.; Kamyshkov, Y.; Kaplan, Daniel M.; Kasper, P.; Kerret, H. de; Kersten, Joern; Klein, J.; Knöpfle, K. T.; Копейкин, В. И.; Kozlov, Yu. V.; Kryn, D.; Kuchler, V.; Kuze, M.; Lachenmaier, T.; Lasserre, T.; Laughton, C.; Lendvai, C.; Li, J.; Lindner, M.; Link, J. M.; Longo, M. J.; Lu, Yao; Luk, K. B.; Ma, Yuqian; Martemyanov, V. P.; Mauger, C.; Manghetti, H.; McKeown, R. D.; Mention, G.; Meyer, J.; Mikaelyan, L.A.; Minakata, Hisakazu; Naples, D.; Nunokawa, Hiroshi; Oberauer, L.; Obolensky, M.; Parke, Stephen J.; Petcov, S.T.; Peres, O. L. G.; Potzel, W.; Pilcher, J. E.; Plunkett, R.; Raffelt, Georg G.; Rapidis, P. A.; Reyna, D.; Roe, B. P.; Rolinec, M.; Sakamoto, Y.; Sartorelli, G.; Schönert, S.; Schwertz, T.; Selvi, M.; Shaevitz, M. H.; Shellard, R. C.; Shrock, Robert; Sidwell, R. A.; Sims, J.; Sinev, V. V.; Stanton, N. R.; Stancu, I.; Stefanski, R.; Seukane, F.; Sugiyama, Hiroaki; Sukhotin, S.; Sumiyoshi, T.; Svoboda, R.; Talaga, R. L.; Tamura, N.; Tanimoto, M.; Thron, J.; Toerne, E. von; Vignaud, D.; Wagner, Carlos E. M.; Wang, Y.F.; Wang, Z.; Winter, Walter; Wong, H. T.; Yakushev, E.; Yang, Chaowen; Yasuda, Osamu

doi:10.2172/834503

Cited by 44 publications

(75 citation statements)

References 73 publications

(135 reference statements)

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“…We find that a measurement of ±0.0020 is achievable. This is comparable to the NuTeV error of ±0.00164, and may help clarify the theoretical situation, as shown in references [8,9].The proposed design employs spherical scintillator oil detectors similar to those used by CHOOZ [10] and by other experiments which have been proposed to measure the oscillation parameter θ 13 [11].This style of detector has been optimized to reconstruct νp → e + n events, which dominate the rate when …”

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confidence: 55%

Precision measurement ofsin2θWat a reactor

2005

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This paper presents a strategy for measuring sin 2 θW to ∼1% at a reactor-based experiment, using νe elastic scattering. This error is comparable to the NuTeV, SLAC E158, and APV results on sin 2 θW , but with substantially different systematic contributions. The measurement can be performed using the near detector of the presently proposed reactor-based oscillation experiments. We conclude that an absolute error of ∼ δ(sin 2 θW ) = 0.0019 may be achieved. This paper outlines a method for measuring sin 2 θ W (Q 2 ≈ 0) at a reactor-based experiment. The study is motivated by the NuTeV result, a 3σ deviation of sin 2 θ W from the Standard Model prediction [1], measured in deep inelastic neutrino scattering (Q 2 = 1 to 140 GeV 2 , Q 2 ν = 26 GeV 2 , Q 2 ν = 15 GeV 2 ). Various Beyond-the-Standard Model explanations have been put forward [2,3,4], and, to fully resolve the issue, many require a follow-up experiment which probes the neutral weak couplings specifically with neutrinos, such as the one described here.This proposed measurement is also interesting as an additional precision study at Q 2 = 4×10 −6 GeV 2 . The two existing low Q 2 measurements are from atomic parity violation (APV) [5], which samples Q 2 ∼ 10 −10 GeV 2 ; and SLAC E158, a Møller scattering experiment at average Q 2 = 0.026 GeV 2 [6]. Using the measurements at the Z-pole with Q 2 = M 2 z to fix the value of sin 2 θ W , and evolving to low Q 2 , Fig. 1 shows that these results are in agreement with the Standard Model. However, the radiative corrections to neutrino interactions allow sensitivity to high mass particles which are complementary to the APV and Møller scattering corrections. Thus, this proposed measurement will provide valuable additional information.The technique we employ uses the rate of the purely leptonic νe scattering to measure sin 2 θ W . This signal was first detected by Reines, Gurr, and Sobel [7], who measured sin 2 θ W = 0.29 ± 0.05. In this paper, we explore what is necessary to improve on their idea and make a competitive measurement today. One important step is to normalize the νe "elastic scatters" using the νp inverse beta decay events, to reduce the error on the flux. Other crucial improvements are that the detector is located beneath an overburden of ∼300 mwe (meters, water-equivalent) and built in a clean environment. We find that a measurement of ±0.0020 is achievable. This is comparable to the NuTeV error of ±0.00164, and may help clarify the theoretical situation, as shown in references [8,9].The proposed design employs spherical scintillator oil detectors similar to those used by CHOOZ [10] and by other experiments which have been proposed to measure the oscillation parameter θ 13 [11].This style of detector has been optimized to reconstruct νp → e + n events, which dominate the rate when

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confidence: 55%

Precision measurement ofsin2θWat a reactor

2005

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“…The obvious answer is to use a near detector to cancel systematic errors, as first proposed by KR2DET [5] and developed by an International Working Group in 2004 [6]. The oscillation probability 1 − P (ν e →ν e ) is:…”

Section: Comparing Reactor and Accelerator Search Strategiesmentioning

confidence: 99%

“…The Double Chooz [10], Daya Bay [11] and RENO [12] experiments are the next generation of reactor neutrino searches, all building detectors based on the designs in Reference [6]. A cylinder containing phototubes will be used to watch three volumes of liquid: 1) a target of gadolinium-loaded liquid scintillator, enclosed in 2) a "γ-catcher" volume of scintillator without gadolinium and 3) a buffer containing mineral oil without scintillator.…”

Section: Reactor Experimentsmentioning

confidence: 99%

Planned reactor and beam experiments on Neutrino Oscillations

Goodman

2009

Nuclear Physics A

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“…[1] for a recent review). One of the remaining questions is the value of the mixing angle θ 13 , where present data give only the upper bound sin 2 2θ 13 ≤ 0.086 at 90% CL [1], and it is a main objective of the next generation of oscillation experiments to pin down the value of θ 13 (see Ref. [2] for an overview and references).…”

Section: Introductionmentioning

confidence: 99%

“…[11]), and several sites in the US [12], e.g., at the Braidwood reactor (see Ref. [13] for an overview). With such a one-reactortwo-detector setup (R1D2) the initial neutrino flux before oscillations can be determined to a very good accuracy by the near detector.…”

Section: Introductionmentioning

confidence: 99%

R2D2 - a symmetric measurement of reactor neutrinos free of systematical errors

Lindner

Schwetz

2005

J. High Energy Phys.

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We discuss a symmetric setup for a reactor neutrino oscillation experiment consisting of two reactors separated by about 1 km, and two symmetrically placed detectors, one close to each reactor. We show that such a configuration allows a determination of sin 2 2θ 13 which is essentially free of systematical errors, if it is possible to separate the contributions of the two reactors in each detector sufficiently. This can be achieved either by considering data when in an alternating way only one reactor is running or by directional sensitivity obtained from the neutron displacement in the detector.

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White paper report on using nuclear reactors to search for a value of theta13

Cited by 44 publications

References 73 publications

Precision measurement ofsin2θWat a reactor

Precision measurement ofsin2θWat a reactor

Planned reactor and beam experiments on Neutrino Oscillations

R2D2 - a symmetric measurement of reactor neutrinos free of systematical errors

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White paper report on using nuclear reactors to search for a value of theta13

Cited by 44 publications

References 73 publications

Precision measurement ofsin﻿2θWat a reactor

Precision measurement ofsin﻿2θWat a reactor

Planned reactor and beam experiments on Neutrino Oscillations

R2D2 - a symmetric measurement of reactor neutrinos free of systematical errors

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Product

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Precision measurement ofsin2θWat a reactor

Precision measurement ofsin2θWat a reactor