Dark Matter Search in the form of WIMPs with the WARP Experiment E nrico B orriello, V alencia, July...

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Dark Matter Search Dark Matter Search in the form of WIMPs in the form of WIMPs with the WARP Experiment with the WARP Experiment E E nrico nrico B B orriello, orriello, V V alencia, July alencia, July U U niversità degli niversità degli S S tudi tudi di di N N apoli apoli F F ederico ederico II II In collaboration with: In collaboration with: G G . . F F iorillo, iorillo, G G . . M M angano, angano, G G . . M M iele iele

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Transcript of Dark Matter Search in the form of WIMPs with the WARP Experiment E nrico B orriello, V alencia, July...

Page 1: Dark Matter Search in the form of WIMPs with the WARP Experiment E nrico B orriello, V alencia, July 2005 U niversità degli S tudi di N apoli F ederico.

Dark Matter Search Dark Matter Search in the form of WIMPsin the form of WIMPs

with the WARP Experimentwith the WARP Experiment

EEnrico nrico BBorriello, orriello,

VValencia, July alencia, July 20052005

UUniversità degli niversità degli SStudi di tudi di

NNapoliapoli

FFederico ederico IIII

In collaboration with:In collaboration with:

GG. . FFiorillo, iorillo, GG. .

MMangano,angano,

GG. . MMieleiele

Page 2: Dark Matter Search in the form of WIMPs with the WARP Experiment E nrico B orriello, V alencia, July 2005 U niversità degli S tudi di N apoli F ederico.

The Dark The Dark MatterMatter

Enrico Borriello, Valencia, July 2005

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Enrico Borriello, Valencia, July 2005

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Composition of the Composition of the UniverseUniverse

matter contributionradiation contributiondark energy contributioncurvature term Enrico Borriello, Valencia,

July 200504

Page 5: Dark Matter Search in the form of WIMPs with the WARP Experiment E nrico B orriello, V alencia, July 2005 U niversità degli S tudi di N apoli F ederico.

Luminous matter

Dark mattermost of the

matter is nonbaryonic

1

100

!

Enrico Borriello, Valencia, July 2005

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Why WIMPS? Why WIMPS? (Weakly Interacting Massive (Weakly Interacting Massive

Particles)Particles)particle massive and stable

Enrico Borriello, Valencia, July 2005

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1

Y

Y

Hdx

dY

Yx

2

eq

A

eq

Enrico Borriello, Valencia, July 2005

07

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Enrico Borriello, Valencia, July 2005

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MSSM and Dark Matter:MSSM and Dark Matter:the neutralinothe neutralino

024

013

021 H~aH~aZ~a~a

Enrico Borriello, Valencia, July 2005

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χ

χ

Direct detection of WIMPSDirect detection of WIMPS

Enrico Borriello, Valencia, July 2005

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Enrico Borriello, Valencia, July 2005

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Page 12: Dark Matter Search in the form of WIMPs with the WARP Experiment E nrico B orriello, V alencia, July 2005 U niversità degli S tudi di N apoli F ederico.

)q(FEdE

ddEd

maxR

C

CRR

220

Enrico Borriello, Valencia, July 2005

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2 v/ve)v(f 2

02 v/|vv|

TlTe)vv(f)v(f

Enrico Borriello, Valencia, July 2005

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The The modulation modulation effecteffect

Enrico Borriello, Valencia, July 2005

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Enrico Borriello, Valencia, July 2005

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Page 16: Dark Matter Search in the form of WIMPs with the WARP Experiment E nrico B orriello, V alencia, July 2005 U niversità degli S tudi di N apoli F ederico.

INFN e Università di PaviaR. 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

WARP: WIMP ARgon WARP: WIMP ARgon ProgrammeProgramme

Enrico Borriello, Valencia, July 2005

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The ratio of primary over secondary signal depends on the kind ofparticles producing excitationand ionization

This discrimination methodrules out the backgroung Induced by gammas and electrons

How the How the measurementmeasurementis performedis performed

Finally, the shielding from neutrons allows to discriminate

WIMP induced interactions Enrico Borriello, Valencia, July 2005

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Enrico Borriello, Valencia, July 2005

2.3 litres sensitivity2.3 litres sensitivity

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Enrico Borriello, Valencia, July 2005

100 litres sensitivity100 litres sensitivity

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Enrico Borriello, Valencia, July 2005

PreliminaryPreliminary1

310

110

410

510

610

710

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