First Search for Lorentz and CPT Violation in Double Beta Decay with EXO-200
Nuclear Experiment
2016-04-05 v2 High Energy Physics - Phenomenology
Abstract
A search for Lorentz- and CPT-violating signals in the double beta decay spectrum of Xe has been performed using an exposure of 100 kgyr with the EXO-200 detector. No significant evidence of the spectral modification due to isotropic Lorentz-violation was found, and a two-sided limit of (90% C.L.) is placed on the relevant coefficient within the Standard-Model Extension (SME). This is the first experimental study of the effect of the SME-defined oscillation-free and momentum-independent neutrino coupling operator on the double beta decay process.
Keywords
Cite
@article{arxiv.1601.07266,
title = {First Search for Lorentz and CPT Violation in Double Beta Decay with EXO-200},
author = {200 Collaboration and J. B. Albert and P. S. Barbeau and D. Beck and V. Belov and M. Breidenbach and T. Brunner and A. Burenkov and G. F. Cao and C. Chambers and B. Cleveland and M. Coon and A. Craycraft and T. Daniels and M. Danilov and S. J. Daugherty and C. G. Davis and J. Davis and S. Delaquis and A. Der Mesrobian-Kabakian and R. DeVoe and J. S. Díaz and T. Didberidze and J. Dilling and A. Dolgolenko and M. J. Dolinski and M. Dunford and W. Fairbank and J. Farine and S. Feyzbkhsh and W. Feldmeier and P. Fierlinger and D. Fudenberg and R. Gornea and K. Graham and G. Gratta and C. Hall and S. Homiller and M. Hughes and M. J. Jewell and X. S. Jiang and A. Johnson and T. N. Johnson and S. Johnston and A. Karelin and L. J. Kaufman and R. Killick and T. Koffas and S. Kravitz and R. Krücken and A. Kuchenkov and K. S. Kumar and D. S. Leonard and Y. H. Lin and J. Ling and R. MacLellan and M. G. Marino and B. Mong and D. Moore and R. Nelson and O. Njoya and A. Odian and I. Ostrovskiy and A. Piepke and A. Pocar and C. Y. Prescott and F. Retiére and P. C. Rowson and J. J. Russell and A. Schubert and D. Sinclair and E. Smith and V. Stekhanov and M. Tarka and T. Tolba and R. Tsang and K. Twelker and J. -L. Vuilleumier and P. Vogel and A. Waite and J. Walton and T. Walton and M. Weber and L. J. Wen and U. Wichoski and J. Wood and L. Yang and Y. -R. Yen and O. Ya. Zeldovich},
journal= {arXiv preprint arXiv:1601.07266},
year = {2016}
}
Comments
6 pages, 3 figures