XENON10/100 dark matter constraints in comparison with CoGeNT and DAMA: Examining the L{sub eff} dependence

Journal Article · Tue Mar 01 04:00:00 EST 2011 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.83.055002· OSTI ID:21537442

Savage, Christopher ^[1]; Gelmini, Graciela ^[2]; Gondolo, Paolo ^[3]; Freese, Katherine ^[4]

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1. Oskar Klein Centre for Cosmoparticle Physics, Department of Physics, Stockholm University, AlbaNova, SE-10691 Stockholm (Sweden)
2. Department of Physics and Astronomy, UCLA, 430 Portola Plaza, Los Angeles, California 90095 (United States)
3. Department of Physics, University of Utah, 115 S 1400 E 201 Salt Lake City, Utah 84112 (United States)
4. Michigan Center for Theoretical Physics, Department of Physics, University of Michigan, Ann Arbor, Michigan 48109 (United States)

We consider the compatibility of DAMA/LIBRA, CoGeNT, XENON10 and XENON100 results for spin-independent (SI) dark matter weakly interacting massive particles, particularly at low masses ({approx}10 GeV), assuming a standard dark matter halo. The XENON bounds depend on the scintillation efficiency factor L{sub eff} for which there is considerable uncertainty. Thus we consider various extrapolations for L{sub eff} at low energy. With the L{sub eff} measurements we consider, XENON100 results are found to be insensitive to the low-energy extrapolation. We find the strongest bounds are from XENON10, rather than XENON100, due to the lower energy threshold. For reasonable choices of L{sub eff} and for the case of SI elastic scattering, XENON10 is incompatible with the DAMA/LIBRA 3{sigma} region and severely constrains the 7-12 GeV WIMP mass region of interest published by the CoGeNT Collaboration.

• OSTI ID: 21537442
• Journal Information: Physical Review. D, Particles Fields, Journal Name: Physical Review. D, Particles Fields Journal Issue: 5 Vol. 83; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ANGULAR MOMENTUM
BASIC INTERACTIONS
COMPARATIVE EVALUATIONS
COMPATIBILITY
EFFICIENCY
ELASTIC SCATTERING
ENERGY RANGE
EVALUATION
EXTRAPOLATION
GEV RANGE
INTERACTIONS
MASS
MATHEMATICAL SOLUTIONS
MATTER
NONLUMINOUS MATTER
NUMERICAL SOLUTION
PARTICLE PROPERTIES
SCATTERING
SCINTILLATIONS
SPIN
WEAK INTERACTIONS