Bradley James Kavanagh
WIMP particle physics and astrophysics with direct detection and neutrino telescope data
Kavanagh, Bradley James; Fornasa, Mattia; Green, Anne M.
Authors
Mattia Fornasa
Anne M. Green
Abstract
With positive signals from multiple direct detection experiments it will, in principle, be possi- ble to measure the mass and cross sections of weakly-interacting massive particle (WIMP) dark matter. Recent work has shown that, with a polynomial parameterisation of the WIMP speed dis- tribution, it is possible to make an unbiased measurement of the WIMP mass, without making any astrophysical assumptions. However, direct detection experiments are not sensitive to low-speed WIMPs and, therefore, any model-independent approach will lead to a bias in the cross section. This problem can be solved with the addition of measurements of the flux of neutrinos from the Sun. This is because the flux of neutrinos produced from the annihilation of WIMPs which have been gravitationally captured in the Sun is sensitive to low-speed WIMPs. Using mock data from next-generation direct detection experiments and from the IceCube neutrino telescope, we show that the complementary information from IceCube on low-speed WIMPs breaks the degeneracy between the cross section and the speed distribution. This allows unbiased determinations of the WIMP mass and spin-independent and spin-dependent cross sections to be made, and the speed distribution to be reconstructed. We use two parameterisations of the speed distribution: binned and polynomial. While the polynomial parameterisation can encompass a wider range of speed distributions, this leads to larger uncertainties in the particle physics parameters.
Citation
Kavanagh, B. J., Fornasa, M., & Green, A. M. (2015). WIMP particle physics and astrophysics with direct detection and neutrino telescope data. Physical Review D - Particles, Fields, Gravitation and Cosmology, 91, Article 103533. https://doi.org/10.1103/physrevd.91.103533
Journal Article Type | Article |
---|---|
Acceptance Date | May 4, 2015 |
Publication Date | May 26, 2015 |
Deposit Date | Jun 30, 2016 |
Publicly Available Date | Jun 30, 2016 |
Journal | Physical Review D |
Print ISSN | 1550-7998 |
Electronic ISSN | 1550-2368 |
Publisher | American Physical Society |
Peer Reviewed | Peer Reviewed |
Volume | 91 |
Article Number | 103533 |
DOI | https://doi.org/10.1103/physrevd.91.103533 |
Public URL | https://nottingham-repository.worktribe.com/output/751315 |
Publisher URL | http://journals.aps.org/prd/abstract/10.1103/PhysRevD.91.103533 |
Contract Date | Jun 30, 2016 |
Files
PhysRevD.91.103533.pdf
(3 Mb)
PDF
Copyright Statement
Copyright information regarding this work can be found at the following address: http://eprints.nottingham.ac.uk/end_user_agreement.pdf
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