Search for Event Rate Modulation in XENON100 Electronic Recoil Data
Creators: name: The XENON Collaboration
name: Aprile, E.
name: Aalbers, J.
name: Agostini, F.
name: Alfonsi, M.
name: Anthony, M.
name: Arazi, L.
name: Arisaka, K.
name: Arneodo, F.
name: Balan, C.
name: Barrow, P.
name: Baudis, L.
name: Bauermeister, B.
name: Breur, P. A.
name: Brown, A.
name: Brown, E.
name: Bruenner, S.
name: Bruno, G.
name: Budnik, R.
name: Buetikofer, L.
name: Cardoso, J. M. R.
name: Cervantes, M.
name: Coderre, D.
name: Colijn, A. P.
name: Contreras, H.
name: Cussonneau, J. P.
name: Decowski, M. P.
name: de Perio, P.
name: Di Giovanni, A.
name: Duchovni, E.
name: Fattori, S.
name: Ferella, A. D.
name: Fieguth, A.
name: Fulgione, W.
name: Gao, F.
name: Garbini, M.
name: Geis, C.
name: Goetzke, L. W.
name: Grignon, C.
name: Gross, E.
name: Hampel, W.
name: Hasterok, C.
name: Itay, R.
name: Kaether, F.
name: Kaminsky, B.
name: Kessler, G.
name: Kish, A.
name: Landsman, H.
name: Lang, R. F.
name: Calloch, M. Le
name: Lellouch, D.
name: Levinson, L.
name: Levy, C.
name: Lindemann, S.
name: Lindner, M.
name: Lopes, J. A. M.
name: Lyashenko, A.
name: Macmullin, S.
name: Undagoitia, T. Marrodan
name: Masbou, J.
name: Massoli, F. V.
name: Mayani, D.
name: Meng, A. J. Melgarejo Fernandez. Y.
name: Messina, M.
name: Micheneau, K.
name: Miguez, B.
name: Molinario, A.
name: Murra, M.
name: Naganoma, J.
name: Ni, K.
name: Oberlack, U.
name: Orrigo, S. E. A.
name: Pakarha, P.
name: Persiani, R.
name: Piastra, F.
name: Pienaar, J.
name: Plante, G.
name: Priel, N.
name: Rauch, L.
name: Reichard, S.
name: Reuter, C.
name: Rizzo, A.
name: Rosendahl, S.
name: Santos, J. M. F. dos
name: Sartorelli, G.
name: Schindler, S.
name: Schreiner, J.
name: Schumann, M.
name: Lavina, L. Scotto
name: Selvi, M.
name: Shagin, P.
name: Simgen, H.
name: Teymourian, A.
name: Thers, D.
name: Tiseni, A.
name: Trinchero, G.
name: Tunnell, C.
name: Wall, R.
name: Wang, H.
name: Weber, M.
name: Weinheimer, C.
name: Zhang, Y.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Experiment (hep-ex)
subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences
subject: FOS: Physical sciences

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.
description: 6 pages, 4 figures