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Article overview
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What can we learn about the lepton CP phase in the next 10 years? | | P. A. N. Machado
; H.Minakata
; H. Nunokawa
; R. Zukanovich Funchal
; | | Date: |
11 Jul 2013 | | Abstract: | We discuss how the lepton CP phase can be constrained by accelerator and
reactor measurements in an era without dedicated experiments for CP violation
search. To characterize globally the sensitivity to the CP phase delta_{CP},
we introduce a new measure, the CP exclusion fraction, which quantifies what
fraction of the delta_{CP} space can be excluded at a given input values of
heta_{23} and delta_{CP}. Using the measure we study the CP sensitivity
which may be possessed by the accelerator experiments T2K and NOvA. We show
that, if the mass hierarchy is known, T2K and NOvA alone may exclude,
respectively, about 50%-60% and 40%-50% of the delta_{CP} space at 90% CL by
10 years running, provided that a considerable fraction of beam time is devoted
to the antineutrino run. The synergy between T2K and NOvA is remarkable,
leading to the determination of the mass hierarchy through CP sensitivity at
the same CL. | | Source: | arXiv, 1307.3248 | | Services: | Forum | Review | PDF | Favorites | |
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