
Record 
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Author 
T2K Collaboration (Abe, K. et al); CerveraVillanueva, A.; Escudero, L.; Izmaylov, A.; Sorel, M.; Stamoulis, P. 


Title 
Measurements of neutrino oscillation in appearance and disappearance channels by the T2K experiment with 6.6 x 10(20) protons on target 
Type 
Journal Article 

Year 
2015 
Publication 
Physical Review D 
Abbreviated Journal 
Phys. Rev. D 


Volume 
91 
Issue 
7 
Pages 
072010  50pp 


Keywords 



Abstract 
We report on measurements of neutrino oscillation using data from the T2K longbaseline neutrino experiment collected between 2010 and 2013. In an analysis of muon neutrino disappearance alone, we find the following estimates and 68% confidence intervals for the two possible mass hierarchies: normal hierarchy: sin(2)theta(23) = 0.514(0.055)(+0.056) and Delta m(32)(2) = (2.51 +/ 0.10) x 10(3) eV(2)/c(4) and inverted hierarchy: sin(2)theta(23) = 0.511 +/ 0.055 and Delta m(13)(2) = (2.48 +/ 0.10) x 10(3) eV(2)/c(4). The analysis accounts for multinucleon mechanisms in neutrino interactions which were found to introduce negligible bias. We describe our first analyses that combine measurements of muon neutrino disappearance and electron neutrino appearance to estimate four oscillation parameters, vertical bar Delta m(2)vertical bar, sin(2)theta(23), sin(2)theta(13,) delta(CP), and the mass hierarchy. Frequentist and Bayesian intervals are presented for combinations of these parameters, with and without including recent reactor measurements. At 90% confidence level and including reactor measurements, we exclude the region delta(CP) = [0.15; 0.83]pi for normal hierarchy and delta(CP) = [0.08; 1.09]pi for inverted hierarchy. The T2K and reactor data weakly favor the normal hierarchy with a Bayes factor of 2.2. The most probable values and 68% onedimensional credible intervals for the other oscillation parameters, when reactor data are included, are sin(2)theta(23) = 0.528(0.055)(+0.038) and vertical bar Delta m(32)(2)vertical bar = (2.51 +/ 0.11) x 10(3) eV(2)/c(4). 


Address 
[Kitching, P.] Univ Alberta, Ctr Particle Phys, Dept Phys, Edmonton, AB, Canada 


Corporate Author 

Thesis 



Publisher 
Amer Physical Soc 
Place of Publication 

Editor 



Language 
English 
Summary Language 

Original Title 



Series Editor 

Series Title 

Abbreviated Series Title 



Series Volume 

Series Issue 

Edition 



ISSN 
15507998 
ISBN 

Medium 



Area 

Expedition 

Conference 



Notes 
WOS:000353636500001 
Approved 
no 


Is ISI 
yes 
International Collaboration 
yes 


Call Number 
IFIC @ pastor @ 
Serial 
2212 

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