WIMP annual modulation with opposite phase in Late-Infall halo models - INSPIRE

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WIMP annual modulation with opposite phase in Late-Infall halo models

Graciela Gelmini
(
- UCLA
)
,
Paolo Gondolo
(
- Case Western Reserve U.
)

Dec, 2000

15 pages

Published in:

Phys.Rev.D 64 (2001) 023504

e-Print:

hep-ph/0012315 [hep-ph]

DOI:

10.1103/PhysRevD.64.023504

Report number:

UCLA-00-TEP-33,
CWRU-P13-00

View in:

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Abstract:

We show that in the late-infall model of our galactic halo by P. Sikivie the expected phase of the annual modulation of a WIMP halo signal in direct detection experiments is opposite to the one usually expected. If a non-virialized halo component due to the infall of (collisionless) dark matter particles cannot be rejected, an annual modulation in a dark matter signal should be looked for by experimenters without fixing the phase a-priori. Moreover, WIMP streams coming to Earth from directions above and below the galactic plane should be expected, with a characteristic pattern of arrival directions.

dark matter
galaxy
WIMP: search for
cosmic radiation: time dependence
WIMP: flux
WIMP: velocity
recoil: energy spectrum
scattering: WIMP nucleus
numerical calculations

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Figures(0)

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