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Title: Constraints on inelastic dark matter from XENON10

Journal Article · · Physical Review. D, Particles, Fields, Gravitation and Cosmology

It has been suggested that dark matter particles which scatter inelastically from detector target nuclei could explain the apparent incompatibility of the DAMA modulation signal (interpreted as evidence for particle dark matter) with the null results from CDMS-II and XENON10. Among the predictions of inelastically interacting dark matter are a suppression of low-energy events, and a population of nuclear recoil events at higher nuclear recoil equivalent energies. This is in stark contrast to the well-known expectation of a falling exponential spectrum for the case of elastic interactions. We present a new analysis of XENON10 dark matter search data extending to E{sub nr} = 75 keV nuclear recoil equivalent energy. Our results exclude a significant region of previously allowed parameter space in the model of inelastically interacting dark matter. In particular, it is found that dark matter particle masses m{sub x} {approx}> 150 GeV are disfavored.

Research Organization:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
W-7405-ENG-48
OSTI ID:
973317
Report Number(s):
LLNL-JRNL-420707; PRVDAQ; TRN: US201006%%323
Journal Information:
Physical Review. D, Particles, Fields, Gravitation and Cosmology, Vol. 80, Issue 11; ISSN 1550-7998
Country of Publication:
United States
Language:
English

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