Summary:
The Double Chooz experiment measures precisely the anti-electron-neutrino flux from Chooz reactor cores in Ardennes, using two large liquid-scintillator detectors located at distances of about 400m and 1000m. From this measurement, the value of the third neutrino-oscillation angle, theta_13, can be determined. It is one of the most important parameters in the neutrino research in the current decade.

French member :
A. Cabrera, J. Dawson, M. Fallot, D. Franco, V. Fisher, H. de Kerret, T. Lasserre, G. Mention, M.Pequignot, A. Tonazzo, M. Vivier

Japanese member :
M. Kuze, T. Hara, M. Ishitsuka, T. Kawasaki, F. Suekane, T. Sumiyoshi

References:
[1] Y. Abe et al. (Double Chooz collraboration), arXiv:1406.7763 (submitted to JHEP).
[2] Y. Abe et al. (Double Chooz collraboration), Phys. Lett. B735 (2014) 51-56.
[3] Y. Abe et al. (Double Chooz collraboration), Phys. Lett. B723 (2013) 66-70.
[4] Y. Abe et al. (Double Chooz collraboration), Phys. Rev. D 86 (2012) 052008.
[5] Y. Abe et al. (Double Chooz collraboration), Phys. Rev. Lett. 108 (2012) 131801.

website:
http://doublechooz.in2p3.fr/
http://dchooz.titech.jp.hep.net/

Summary:

French member :
J. Dumarchez, L. Agostino, D. Autiero, S. Bolognesi, J. Dawson, I. de Bonis, D. Duchesneau, V. Galymov, C. Giganti, J. Marteau, E. Mazzucato, T. Patzak, E. Pennachio, H. Pessard, B. Popov, A. Tonnazzo, G. Vasseur, M. Zito

Japanese member :
M. T. Hasegawa, S. Kasai, Y. Kuromori, T. Nakadaira, S. Narita, K. Sakashita, L. Zambelli

References:

website:

Summary:
The knowledge of the neutrino interaction cross-section is one of the largest and most complicated systematics for present and future long-baseline neutrino oscillation experiments. As an example, LBNF aims at an impressive total systematic uncertainty of 1%, while the uncertainties due to neutrino cross-section in T2K are today larger than 5%.
The aim of this project is to exploit the data from the T2K near detectors (ND280, INGRID) to improve the precision on neutrino interaction modeling. Moreover a dedicated water scintillator detector (WAGASCI) is being constructed to be installed on the same beamline.

French member :
S. Bolognesi, M. Buizza Avanzini, O. Drapier, J. Dumarchez, S. Emery, C. Giganti, M. Gonin, J. Imber, T. Mueller, B. Popov, M. Zito

Japanese member :
T. Tsukamoto, N.Chikuma, J. Harada, T. Hayashino, Y. Hayato, F. Hosomi, K. Kin, T. Kobayashi, T. Koga, A. Minamino, T. Nakaya, Y. Seiya, K. Yamamoto, M. Yokoyama

References:
[1] T2K Collaboration, Phys.Rev. D91 (2015) 7, 072010
[2] L.Alvarez-Ruso, Y.Hayato, J.Nieves, New J.Phys. 16 (2014) 075015

website:
http://t2k-experiment.org/