Model independent result on possible diurnal effect in DAMA/LIBRA-phase1
- Bernabei, R.Dip. di Fisica, Università di Roma “Tor Vergata”, 00133 , Rome, Italy
- Belli, P.(INFN, sez. Roma “Tor Vergata”, 00133 , Rome, Italy)
- Cappella, F.(Dip. di Fisica, Università di Roma “La Sapienza”, 00185 , Rome, Italy)
- Caracciolo, V.(Laboratori Nazionali del Gran Sasso, INFN, Assergi, Italy)
- Castellano, S.(Laboratori Nazionali del Gran Sasso, INFN, Assergi, Italy)
- Cerulli, R.(Laboratori Nazionali del Gran Sasso, INFN, Assergi, Italy)
- Dai, C. J.(Institute of High Energy Physics, Chinese Academy of Sciences, P.O. Box 918/3, 100049, Beijing, China)
- d’Angelo, A.(Dip. di Fisica, Università di Roma “La Sapienza”, 00185 , Rome, Italy)
- d’Angelo, S.(Dip. di Fisica, Università di Roma “Tor Vergata”, 00133 , Rome, Italy)
- Di Marco, A.(Dip. di Fisica, Università di Roma “Tor Vergata”, 00133 , Rome, Italy)
- He, H. L.(Institute of High Energy Physics, Chinese Academy of Sciences, P.O. Box 918/3, 100049, Beijing, China)
- Incicchitti, A.(INFN, sez. Roma, 00185 , Rome, Italy)
- Kuang, H. H.(Institute of High Energy Physics, Chinese Academy of Sciences, P.O. Box 918/3, 100049, Beijing, China)
- Ma, X. H.(Institute of High Energy Physics, Chinese Academy of Sciences, P.O. Box 918/3, 100049, Beijing, China)
- Montecchia, F.(INFN, sez. Roma “Tor Vergata”, 00133 , Rome, Italy)
- Prosperi, D.(Dip. di Fisica, Università di Roma “La Sapienza”, 00185 , Rome, Italy)
- Sheng, X. D.(Institute of High Energy Physics, Chinese Academy of Sciences, P.O. Box 918/3, 100049, Beijing, China)
- Wang, R. G.(Institute of High Energy Physics, Chinese Academy of Sciences, P.O. Box 918/3, 100049, Beijing, China)
- Ye, Z. P.(Institute of High Energy Physics, Chinese Academy of Sciences, P.O. Box 918/3, 100049, Beijing, China)
Publication date
April 2014
DOIAbstract
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 <math><mo>×</mo></math> year) deep underground at the Gran Sasso National Laboratory (LNGS) of the INFN 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
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