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arXiv · 1505.05336

Investigating Earth shadowing effect with DAMA/LIBRA-phase1

R. Bernabei·P. Belli·S. d'Angelo·A. Di Marco·F. Montecchia·A. d'Angelo·A. Incicchitti·F. Cappella·V. Caracciolo·R. Cerulli·C. J. Dai·H. L. He·H. H. Kuang·X. H. Ma·X. D. Sheng·R. G. Wang·Z. P. Ye
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Abstract

In the present paper the results obtained in the investigation of possible diurnal effects for low-energy single-hit scintillation events of DAMA/LIBRA-phase1 (1.04 ton $\times$ yr exposure) have been analysed in terms of an effect expected in case of Dark Matter (DM) candidates inducing nuclear recoils and having high cross-section with ordinary matter, which implies low DM local density in order to fulfill the DAMA/LIBRA DM annual modulation results. This effect is due to the different Earth depths crossed by those DM candidates during the sidereal day.

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R. Bernabei, P. Belli, S. d'Angelo, A. Di Marco, F. Montecchia, A. d'Angelo, A. Incicchitti, F. Cappella, V. Caracciolo, R. Cerulli, C. J. Dai, H. L. He, H. H. Kuang, X. H. Ma, X. D. Sheng, R. G. Wang, Z. P. Ye. 2015-05-20. Investigating Earth shadowing effect with DAMA/LIBRA-phase1. https://doi.org/10.1140/epjc%2Fs10052-015-3473-y

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