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Limits on spin-dependent WIMP-nucleon cross sections from 225 live days of XENON100 data
Preprint
XENON100 collaboration ,
E. Aprile ,
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. 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
28 January 2013
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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 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.