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

/ Authors

E. Aprile, M. Alfonsi, K. Arisaka, F. Arneodo, C. Balan, L. Baudis, B. Bauermeister, A. Behrens, P. Beltrame, K. Bokeloh

and 67 more authors

A. Brown, E. Brown, G. Bruno, R. Budnik, J. Cardoso, W.-T. Chen, B. Choi, A. Colijn, H. Contreras, J. Cussonneau, M. Decowski, E. Duchovni, S. Fattori, A. Ferella, W. Fulgione, F. Gao, M. Garbini, C. Ghag, K. Giboni, L. Goetzke, C. Grignon, E. Gross, W. Hampel, F. Kaether, A. Kish, J. Lamblin, H. Landsman, R. Lang, M. Calloch, D. Lellouch, C. Levy, K. Lim, Q. Lin, S. Lindemann, M. Lindner, J. Lopes, K. Lung, T. M. Undagoitia, F. V. Massoli, A. Fernandez, Y. Meng, M. Messina, A. Molinario, K. Ni, U. Oberlack, S. Orrigo, E. Pantic, R. Persiani, G. Plante, N. Priel, A. Rizzo, S. Rosendahl, J. M. F. Santos, G. Sartorelli, J. Schreiner, M. Schumann, L. Scotto, P. Scovell, M. Selvi, P. Shagin, H. Simgen, A. Teymourian, D. Thers, O. Vitells, Hao Wang, M. Weber, C. Weinheimer

/ 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.

Journal: Physical review letters

DOI: 10.1103/PhysRevLett.111.021301