Dark Matter Search in the form of WIMPs with the WARP Experiment Università degli Studi di Napoli Federico II Dark Matter Search in the form of WIMPs with the WARP Experiment In collaboration with: G. Fiorillo, G. Mangano, G. Miele Enrico Borriello, Valencia, July 2005

The Dark Matter 02 Enrico Borriello, Valencia, July 2005

03 Enrico Borriello, Valencia, July 2005

Composition of the Universe matter contribution radiation contribution dark energy contribution curvature term 04 Enrico Borriello, Valencia, July 2005

! Luminous matter 1 100 Dark matter most of the matter is non baryonic 05 Enrico Borriello, Valencia, July 2005

Why WIMPS? (Weakly Interacting Massive Particles) 06 Enrico Borriello, Valencia, July 2005

07 Enrico Borriello, Valencia, July 2005

08 Enrico Borriello, Valencia, July 2005

MSSM and Dark Matter: the neutralino 09 Enrico Borriello, Valencia, July 2005

Direct detection of WIMPS χ χ 10 Enrico Borriello, Valencia, July 2005

11 Enrico Borriello, Valencia, July 2005

12 Enrico Borriello, Valencia, July 2005

13 Enrico Borriello, Valencia, July 2005

The modulation effect 14 Enrico Borriello, Valencia, July 2005

15 Enrico Borriello, Valencia, July 2005

WARP: WIMP ARgon Programme INFN e Università di Pavia R. Brunetti, E. Calligarich, M. Cambiaghi, C. De Vecchi, R. Dolfini, L. Grandi, A. Menegolli, C. Montanari, M. Prata, A. Rappoldi, G. L. Raselli, M. Roncadelli, M. Rossella, C. Rubbia, C. Vignoli INFN e Università di Napoli F. Carbonara, A. Cocco, A. Ereditato, G. Fiorillo, G. Mangano, R. Santorelli INFN Laboratori Nazionali del Gran Sasso F.Cavanna, N.Ferrari, O. Palamara Università di Princeton C. Galbiati 16 Enrico Borriello, Valencia, July 2005

How the measurement is performed The ratio of primary over secondary signal depends on the kind of particles producing excitation and ionization This discrimination method rules out the backgroung Induced by gammas and electrons Finally, the shielding from neutrons allows to discriminate WIMP induced interactions 17 Enrico Borriello, Valencia, July 2005

2.3 litres sensitivity 18 Enrico Borriello, Valencia, July 2005

100 litres sensitivity 19 Enrico Borriello, Valencia, July 2005

Preliminary 21 Enrico Borriello, Valencia, July 2005