direct dark matter search and nuclear structure

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Direct Dark Matter Search and Nuclear Structure. V.A.Bednyakov Dzhelepov Laboratory of Nuclear Problems, JINR. How much is the Dark Matter ?. Most “obvious” evidence for dark matter comes from the rotation curves of spiral galaxies:. - Inside the galaxy - Outside the galaxy. - PowerPoint PPT Presentation

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Direct Dark Matter Search and Nuclear Structure

V.A.BednyakovDzhelepov Laboratory of Nuclear

Problems, JINR

1

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How much is the Dark Matter ?

Most “obvious” evidence for dark

matter comes from the rotation

curves of spiral galaxies:

2

2

( )

rграв центр

r

GM M M vF F

r r

GMv r

r

3

1/ 2

4

3( )

( )

rM r

v r r

v r r

- Inside the galaxy

- Outside the galaxy 3

Disc galaxy contribution (stars)

Dark matter halo contribution

This shows on a huge non-luminous amount of matter, located far beyond the visual region of the galaxy.

rM r

( )v r const

Invisible halo masses are about one order of magnitude heavier the visible mass of the stars in the galaxy

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Strings?

Baryons?

Flat Universe?

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18Kazakov, de Boer, Gladyshev

Search for Dark matter tightly connected with Search for Dark matter tightly connected with high-energy SUSY search athigh-energy SUSY search at LHCLHC – – unity of unity of

modern New Physicsmodern New Physics

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MSSM fields and R-parity

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Common SUSY parameters

With finite set of SUSY parameters one describes “All PhysicsAll Physics” – All masses and all

couplings (mSUGRA – only 4 such parameters)

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SUSY mass limits from collider searches (2005)

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What one expect for direct DM search from What one expect for direct DM search from accelerator SUSY constraints?accelerator SUSY constraints?

GENIUS,GENIUS,Gran Sasso Gran Sasso withwith 100 100 kgkg GeGe

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Higgs bosons:

• mh< 130 GeV/c2

• mH< 170 GeV/c2

• mH+< 200 GeV/c2

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What one expect with accelerator if (DM searches) What one expect with accelerator if (DM searches) DAMA and EGRET are right?DAMA and EGRET are right?

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Where is here the hadron and nuclear structure?

29SUSY

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The HDMS detectors 2 HPGe detectors in one cryostat system. Inner: WIMP targetOuter: active veto against multiple Comptons passive Ge shield

WIMP

gamma

34first 73Ge detector

Measured Ge-73 spectra

New limints for WIMP-neutron spin interaction from data with Ge-73 inner detector in one (SPIN) coupling dominance approach by Klapdor-Kleingrothaus, et al..

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WIMP-nucleon spin interaction

ONE COUPLING DOMINANCE 36

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Mixed SD-SI coupling approach: define together SI and SD cross sections and improve limits

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““Hunting” for SUSYHunting” for SUSY• In fact, SUSY will be discovered when

all deviation from the Standard Model will be coherently described within the one and unique set of SUSY parameters!

• Therefore SUSY =LHC+SUSY =LHC++DM relic density+DM relic density+Rare Decays+Rare Decays++DM detection …DM detection …

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No way without the Nuclear and Nucleon Structures !

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