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arxiv 1301.6620 v2 pith:4DMATTC4 submitted 2013-01-28 astro-ph.CO astro-ph.IMhep-exhep-ph

Limits on spin-dependent WIMP-nucleon cross sections from 225 live days of XENON100 data

XENON100 collaboration: E. Aprile , M. Alfonsi , K. Arisaka , F. Arneodo , C. Balan , L. Baudis , B. Bauermeister , A. Behrens
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P. Beltrame K. Bokeloh A. Brown E. Brown G. Bruno R. Budnik J. M. R. Cardoso W.-T. Chen B. Choi A. P. Colijn H. Contreras J. P. Cussonneau M. P. Decowski E. Duchovni S. Fattori A. D. Ferella W. Fulgione F. Gao M. Garbini C. Ghag K.-L. Giboni L. W. Goetzke C. Grignon E. Gross W. Hampel F. Kaether A. Kish J. Lamblin H. Landsman R. F. Lang M. Le Calloch D. Lellouch C. Levy K. E. Lim Q. Lin S. Lindemann M. Lindner J. A. M. Lopes K. Lung T. Marrodan Undagoitia F. V. Massoli A. J. Melgarejo Fernandez Y. Meng M. Messina A. Molinario K. Ni U. Oberlack S. E. A. Orrigo E. Pantic R. Persiani G. Plante N. Priel A. Rizzo S. Rosendahl J. M. F. dos Santos G. Sartorelli J. Schreiner M. Schumann L. Scotto Lavina P. R. Scovell M. Selvi P. Shagin H. Simgen A. Teymourian D. Thers O. Vitells H. Wang M. Weber C. Weinheimer
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classification astro-ph.CO astro-ph.IMhep-exhep-ph
keywords crosswimpdatadayslimitslivesectionsections
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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We present new experimental constraints on the elastic, spin-dependent WIMP-nucleon cross section using recent data from the XENON100 experiment, operated in the Laboratori Nazionali del Gran Sasso in Italy. An analysis of 224.6 live days x 34 kg of exposure acquired during 2011 and 2012 revealed no excess signal due to axial-vector WIMP interactions with 129-Xe and 131-Xe nuclei. This leads to the most stringent upper limits on WIMP-neutron cross sections for WIMP masses above 6 GeV, with a minimum cross section of 3.5 x 10^{-40} cm^2 at a WIMP mass of 45 GeV, at 90% confidence level.

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