Model independent result on possible diurnal effect in DAMA/LIBRA-phase1

Abstract

The results obtained in the search for possible diurnal effect in the single-hit low energy data collected by DAMA/LIBRA-phase1 (total exposure: 1.04 ton x yr) deep underground at the Gran Sasso National Laboratory (LNGS) of the I.N.F.N. are presented. At the present level of sensitivity the presence of any significant diurnal variation and of diurnal time structures in the data can be excluded for both the cases of solar and sidereal time. In particular, the diurnal modulation amplitude expected, because of the Earth diurnal motion, on the basis of the DAMA Dark Matter annual modulation results is below the present sensitivity.

14 pages, 5 figures, 2 tables; in publication on Eur. Phys. J. C

References in corpus (3)

• First results from DAMA/LIBRA and the combined results with DAMA/NaI
• New results from DAMA/LIBRA
• The DAMA/LIBRA apparatus

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