Improved measurement of the 2νββ half-life of 136 Xe with the EXO-200 detector

Improved measurement of the 2νββ half-life of 136 Xe with the EXO-200 detector. Albert, J. B., Auger, M., Auty, D. J., Barbeau, P. S., Beauchamp, E., Beck, D., Belov, V., Benitez-Medina, C., Bonatt, J., Breidenbach, M., Brunner, T., Burenkov, A., Cao, G. F., Chambers, C., Chaves, J., Cleveland, B., Cook, S., Craycraft, A., Daniels, T., Danilov, M., Daugherty, S. J., Davis, C. G., Davis, J., Devoe, R., Delaquis, S., Dobi, A., Dolgolenko, A., Dolinski, M. J., Dunford, M., Fairbank, W., Farine, J., Feldmeier, W., Fierlinger, P., Franco, D., Fudenberg, D., Giroux, G., Gornea, R., Graham, K., Gratta, G., Hall, C., Hall, K., Hargrove, C., Herrin, S., Hughes, M., Jiang, X. S., Johnson, A., Johnson, T. N., Johnston, S., Karelin, A., Kaufman, L. J., Killick, R., Kravitz, S., Kuchenkov, A., Kumar, K. S., Leonard, D. S., Leonard, F., Licciardi, C., Maclellan, R., Marino, M. G., Mong, B., Montero Díez, M., Moore, D., Nelson, R., O'Sullivan, K., Odian, A., Ostrovskiy, I., Ouellet, C., Piepke, A., Pocar, A., Prescott, C. Y., Rivas, A., Rowson, P. C., Rozo, M. P., Russell, J. J., Sabourov, A., Sinclair, D., Skarpaas, K., Slutsky, S., Stekhanov, V., Strickland, V., Tarka, M., Tolba, T., Tosi, D., Twelker, K., Vogel, P., Vuilleumier, J. L., Waite, A., Walton, J., Walton, T., Weber, M., Wen, L. J., Wichoski, U., Wodin, J., Wright, J. D., Yang, L., Yen, Y. R., Zeldovich, O. Y., & Zhao, Y. B. Physical Review C - Nuclear Physics, 89(1):15502–15502, 2014.

Paper doi abstract bibtex

We report on an improved measurement of the 2\nu \beta \beta\ half-life of Xe-136 performed by EXO-200. The use of a large and homogeneous time projection chamber allows for the precise estimate of the fiducial mass used for the measurement, resulting in a small systematic uncertainty. We also discuss in detail the data analysis methods used for double-beta decay searches with EXO-200, while emphasizing those directly related to the present measurement. The Xe-136 2\nu \beta \beta\ half-life is found to be 2.165 +- 0.016 (stat) +- 0.059 (sys) x 10\textasciicircum21 years. This is the most precisely measured half-life of any 2\nu \beta \beta\ decay to date.

@article{albert_improved_2014,
	title = {Improved measurement of the 2νββ half-life of 136 {Xe} with the {EXO}-200 detector},
	volume = {89},
	url = {https://journals.aps.org/prc/pdf/10.1103/PhysRevC.89.015502},
	doi = {10.1103/PhysRevC.89.015502},
	abstract = {We report on an improved measurement of the 2{\textbackslash}nu {\textbackslash}beta {\textbackslash}beta{\textbackslash} half-life of Xe-136 performed by EXO-200. The use of a large and homogeneous time projection chamber allows for the precise estimate of the fiducial mass used for the measurement, resulting in a small systematic uncertainty. We also discuss in detail the data analysis methods used for double-beta decay searches with EXO-200, while emphasizing those directly related to the present measurement. The Xe-136 2{\textbackslash}nu {\textbackslash}beta {\textbackslash}beta{\textbackslash} half-life is found to be 2.165 +- 0.016 (stat) +- 0.059 (sys) x 10{\textasciicircum}21 years. This is the most precisely measured half-life of any 2{\textbackslash}nu {\textbackslash}beta {\textbackslash}beta{\textbackslash} decay to date.},
	number = {1},
	journal = {Physical Review C - Nuclear Physics},
	author = {Albert, J. B. and Auger, M. and Auty, D. J. and Barbeau, P. S. and Beauchamp, E. and Beck, D. and Belov, V. and Benitez-Medina, C. and Bonatt, J. and Breidenbach, M. and Brunner, T. and Burenkov, A. and Cao, G. F. and Chambers, C. and Chaves, J. and Cleveland, B. and Cook, S. and Craycraft, A. and Daniels, T. and Danilov, M. and Daugherty, S. J. and Davis, C. G. and Davis, J. and Devoe, R. and Delaquis, S. and Dobi, A. and Dolgolenko, A. and Dolinski, M. J. and Dunford, M. and Fairbank, W. and Farine, J. and Feldmeier, W. and Fierlinger, P. and Franco, D. and Fudenberg, D. and Giroux, G. and Gornea, R. and Graham, K. and Gratta, G. and Hall, C. and Hall, K. and Hargrove, C. and Herrin, S. and Hughes, M. and Jiang, X. S. and Johnson, A. and Johnson, T. N. and Johnston, S. and Karelin, A. and Kaufman, L. J. and Killick, R. and Kravitz, S. and Kuchenkov, A. and Kumar, K. S. and Leonard, D. S. and Leonard, F. and Licciardi, C. and Maclellan, R. and Marino, M. G. and Mong, B. and Montero Díez, M. and Moore, D. and Nelson, R. and O'Sullivan, K. and Odian, A. and Ostrovskiy, I. and Ouellet, C. and Piepke, A. and Pocar, A. and Prescott, C. Y. and Rivas, A. and Rowson, P. C. and Rozo, M. P. and Russell, J. J. and Sabourov, A. and Sinclair, D. and Skarpaas, K. and Slutsky, S. and Stekhanov, V. and Strickland, V. and Tarka, M. and Tolba, T. and Tosi, D. and Twelker, K. and Vogel, P. and Vuilleumier, J. L. and Waite, A. and Walton, J. and Walton, T. and Weber, M. and Wen, L. J. and Wichoski, U. and Wodin, J. and Wright, J. D. and Yang, L. and Yen, Y. R. and Zeldovich, O. Ya and Zhao, Y. B.},
	year = {2014},
	pages = {15502--15502},
}

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