Erratum: Reactor measurement of θ13 and its complementarity to long-baseline experiments [ Phys. Rev. D 68, 033017 (2003)]

Physical Review D (Impact Factor: 4.69). 09/2004; DOI: 10.1103/PhysRevD.70.059901
Source: arXiv

ABSTRACT A possibility to measure $\sin^22\theta_{13}$ using reactor neutrinos is examined in detail. It is shown that the sensitivity $\sin^22\theta_{13}>0.02$ can be reached with 20 ton-year data by placing identical CHOOZ-like detectors at near and far distances from a giant nuclear power plant whose total thermal energy is 24.3 ${\text{GW}_{\text{th}}}$. It is emphasized that this measurement is free from the parameter degeneracies which occur in accelerator appearance experiments, and therefore the reactor measurement plays a role complementary to accelerator experiments. It is also shown that the reactor measurement may be able to resolve the degeneracy in $\theta_{23}$ if $\sin^22\theta_{13}$ and $\cos^22\theta_{23}$ are relatively large. Comment: 25 pages, 8 figures, uses revtex4 and graphicx. Several modifications added to make the text easier to understand. Two more figures added. To be published in Phys. Rev. D

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    ABSTRACT: Precision measurement of the leptonic CP violating phase δ will suffer from the, then surviving, large uncertainty of sin⁡2θ23 of 10–20% in the experimentally interesting region near maximal mixing of θ23. We advocate a new method for determination of both θ23 and δ at the same time using only the νe and ν̅ e appearance channels and show that sin⁡2θ23 can be determined automatically with much higher accuracy, approximately a factor of six, than sin⁡δ. In this method, we identify a new degeneracy for the simultaneous determination of θ23 and δ, the θ23 intrinsic degeneracy, which must be resolved in order to achieve precision measurement of these two parameters. Spectral information around the vacuum oscillation maxima is shown to be the best way to resolve this degeneracy.
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    Physical Review C 12/2011; 85(4). · 3.72 Impact Factor

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