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Astrophysics-Independent Bounds on the Annual Modulation of Dark Matter Signals

MPG-Autoren
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Schwetz,  Thomas
Division Prof. Dr. Manfred Lindner, MPI for Nuclear Physics, Max Planck Society;

Externe Ressourcen

http://link.aps.org/doi/10.1103/PhysRevLett.109.141301
(Verlagsversion)

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Volltexte (frei zugänglich)

1205.0134
(Preprint), 740KB

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Zitation

Herrero-Garcia, J., Schwetz, T., & Zupan, J. (2012). Astrophysics-Independent Bounds on the Annual Modulation of Dark Matter Signals. Physical Review Letters, 109(14): 141301, pp. 1-5. doi:10.1103/PhysRevLett.109.141301.


Zitierlink: https://hdl.handle.net/11858/00-001M-0000-0010-0C80-3
Zusammenfassung
We show how constraints on the time integrated event rate from a given dark matter (DM) direct detection experiment can be used to set a stringent constraint on the amplitude of the annual modulation signal in another experiment. The method requires only very mild assumptions about the properties of the local DM distribution: that it is temporally stable on the scale of months and spatially homogeneous on the ecliptic. We apply the method to the annual modulation signal in DAMA/LIBRA, which we compare to the bounds derived from the constraints on the time-averaged rates from XENON10, XENON100, CDMS and SIMPLE. Assuming a DM mass of 10 GeV, we show that a DM interpretation of the DAMA/LIBRA signal is excluded at 6.3sigma (4.6sigma) for isospin conserving (violating) spin-independent interactions, and at 4.9sigma for spin-dependent interactions on protons.