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28 March 2024
 
  » arxiv » 1507.7748

 Article overview


Search for Event Rate Modulation in XENON100 Electronic Recoil Data
XENON Collaboration ; E. Aprile ; J. Aalbers ; F. Agostini ; M. Alfonsi ; M. Anthony ; L. Arazi ; K. Arisaka ; F. Arneodo ; C. Balan ; P. Barrow ; L. Baudis ; B. Bauermeister ; P. A. Breur ; A. Brown ; E. Brown ; S. Bruenner ; G. Bruno ; R. Budnik ; L. Buetikofer ; J. M. R. Cardoso ; M. Cervantes ; D. Coderre ; A. P. Colijn ; H. Contreras ; J. P. Cussonneau ; M. P. Decowski ; P. de Perio ; A. Di Giovanni ; E. Duchovni ; S. Fattori ; A. D. Ferella ; A. Fieguth ; W. Fulgione ; F. Gao ; M. Garbini ; C. Geis ; L. W. Goetzke ; C. Grignon ; E. Gross ; W. Hampel ; C. Hasterok ; R. Itay ; F. Kaether ; B. Kaminsky ; G. Kessler ; A. Kish ; H. Landsman ; R. F. Lang ; M. Le Calloch ; D. Lellouch ; L. Levinson ; C. Levy ; S. Lindemann ; M. Lindner ; J. A. M. Lopes ; A. Lyashenko ; S. Macmullin ; T. Marrodan Undagoitia ; J. Masbou ; F. V. Massoli ; D. Mayani ; A. J. Melgarejo Fernandez. Y. Meng ; M. Messina ; K. Micheneau ; B. Miguez ; A. Molinario ; M. Murra ; J. Naganoma ; K. Ni ; U. Oberlack ; S. E. A. Orrigo ; P. Pakarha ; R. Persiani ; F. Piastra ; J. Pienaar ; G. Plante ; N. Priel ; L. Rauch ; S. Reichard ; C. Reuter ; A. Rizzo ; S. Rosendahl ; J. M. F. dos Santos ; G. Sartorelli ; S. Schindler ; J. Schreiner ; M. Schumann ; L. Scotto Lavina ; M. Selvi ; P. Shagin ; H. Simgen ; A. Teymourian ; D. Thers ; A. Tiseni ; G. Trinchero ; C. Tunnell ; R. Wall ; H. Wang ; M. Weber ; C. Weinheimer ; Y. Zhang ;
Date 28 Jul 2015
AbstractWe 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.
Source arXiv, 1507.7748
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