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. 2013 Jul 12;111(2):021301.
doi: 10.1103/PhysRevLett.111.021301. Epub 2013 Jul 9.

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

E Aprile  1 , M Alfonsi, K Arisaka, F Arneodo, C Balan, L Baudis, B Bauermeister, A Behrens, 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 Marrodán 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; XENON100 Collaboration
Affiliations
Free article

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

E Aprile et al. Phys Rev Lett. .
Free article

Abstract

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×34 kg of exposure acquired during 2011 and 2012 revealed no excess signal due to axial-vector WIMP interactions with 129Xe and 131Xe nuclei. This leads to the most stringent upper limits on WIMP-neutron cross sections for WIMP masses above 6 GeV/c², with a minimum cross section of 3.5×10(-40) cm² at a WIMP mass of 45 GeV/c², at 90% confidence level.

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