Search for Event Rate Modulation in XENON100 Electronic Recoil Data

BORIS DOI
Publisher DOI
Description
We have searched for periodic variations of the electronic recoil event rate in the (2-6) keV energy range recorded between February 2011 and March 2012 with the XENON100 detector, adding up to 224.6 live days in total. Following a detailed study to establish the stability of the detector and its background contributions during this run, we performed an un-binned profile likelihood analysis to identify any periodicity up to 500 days. We find a global significance of less than 1 sigma for all periods suggesting no statistically significant modulation in the data. While the local significance for an annual modulation is 2.8 sigma, the analysis of a multiple-scatter control sample and the phase of the modulation disfavor a dark matter interpretation. The DAMA/LIBRA annual modulation interpreted as a dark matter signature with axial-vector coupling of WIMPs to electrons is excluded at 4.8 sigma.
Date of Publication
2015
Publication Type
Article
Subject(s)
Language(s)
en
Contributor(s)
Aprile, E.
Aalbers, J.
Agostini, F.
Alfonsi, M.
Anthony, M.
Arazi, L.
Arisaka, K.
Arneodo, F.
Balan, C.
Barrow, P.
Baudis, L.
Bauermeister, B.
Breur, P. A.
Brown, A.
Brown, E.
Bruenner, S.
Bruno, G.
Budnik, R.
Cardoso, J. M. R.
Cervantes, M.
Colijn, A. P.
Contreras, H.
Cussonneau, J. P.
Decowski, M. P.
de Perio, P.
Di Giovanni, A.
Duchovni, E.
Fattori, S.
Ferella, A. D.
Fieguth, A.
Fulgione, W.
Gao, F.
Garbini, M.
Geis, C.
Goetzke, L. W.
Grignon, C.
Gross, E.
Hampel, W.
Hasterok, C.
Itay, R.
Kaether, F.
Kessler, G.
Kish, A.
Landsman, H.
Lang, R. F.
Le Calloch, M.
Lellouch, D.
Levinson, L.
Levy, C.
Lindemann, S.
Lindner, M.
Lopes, J. A. M.
Lyashenko, A.
Macmullin, S.
Marrodán Undagoitia, T.
Masbou, J.
Massoli, F. V.
Mayani, D.
Melgarejo Fernandez, A. J.
Meng, Y.
Messina, M.
Micheneau, K.
Miguez, B.
Molinario, A.
Murra, M.
Naganoma, J.
Ni, K.
Oberlack, U.
Orrigo, S. E. A.
Pakarha, P.
Persiani, R.
Piastra, F.
Pienaar, J.
Plante, G.
Priel, N.
Rauch, L.
Reichard, S.
Reuter, C.
Rizzo, A.
Rosendahl, S.
dos Santos, J. M. F.
Sartorelli, G.
Schindler, S.
Schreiner, J.
Scotto Lavina, L.
Selvi, M.
Shagin, P.
Simgen, H.
Teymourian, A.
Thers, D.
Tiseni, A.
Trinchero, G.
Tunnell, C.
Wall, R.
Wang, H.
Weber, M.
Weinheimer, C.
Zhang, Y.
Additional Credits
Series
Physical review letters
Publisher
American Physical Society
ISSN
0031-9007
Access(Rights)
open.access
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