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Dark Matter indirect detection: theoretical uncertainties

Publié parพิกุล พิศาลบุตร Modifié depuis plus de 5 années

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Présentation au sujet: "Dark Matter indirect detection: theoretical uncertainties"— Transcription de la présentation:

1 Dark Matter indirect detection: theoretical uncertainties
GDR SUSY 27-IV-2008 Strasbourg GDR SUSY 2008 Strasbourg IPHC Timur DELAHAYE

2 GDR SUSY 2008 Strasbourg IPHC Timur DELAHAYE
Plan Indirect detection : the e+ chanel Positrons propagation Primary positrons Secondary positrons GDR SUSY 2008 Strasbourg IPHC Timur DELAHAYE

3 There is something about e+
GDR SUSY 2008 Strasbourg IPHC Timur DELAHAYE

4 GDR SUSY 2008 Strasbourg IPHC Timur DELAHAYE
The propagation model GDR SUSY 2008 Strasbourg IPHC Timur DELAHAYE

5 GDR SUSY 2008 Strasbourg IPHC Timur DELAHAYE
Diffusion equation GDR SUSY 2008 Strasbourg IPHC Timur DELAHAYE

6 GDR SUSY 2008 Strasbourg IPHC Timur DELAHAYE
Diffusion equation GDR SUSY 2008 Strasbourg IPHC Timur DELAHAYE

7 GDR SUSY 2008 Strasbourg IPHC Timur DELAHAYE
Diffusion parameters K = K0 E : diffusion coefficient L : half-thickness of the diffusion zone GDR SUSY 2008 Strasbourg IPHC Timur DELAHAYE

8 GDR SUSY 2008 Strasbourg IPHC Timur DELAHAYE
Diffusion parameters Constrains from B/C by : D. Maurin et alii GDR SUSY 2008 Strasbourg IPHC Timur DELAHAYE

9 GDR SUSY 2008 Strasbourg IPHC Timur DELAHAYE
Primary positrons The source term The calculated flux Positrons from dark matter annihilation in the galactic halo: Theoretical uncertainties with R. Lineros, F. Donato, N. Fornengo and P. Salati Phys. Rev. D arXiv: GDR SUSY 2008 Strasbourg IPHC Timur DELAHAYE

10 GDR SUSY 2008 Strasbourg IPHC Timur DELAHAYE
The propagation model GDR SUSY 2008 Strasbourg IPHC Timur DELAHAYE

11 Influence of the halo profile
GDR SUSY 2008 Strasbourg IPHC Timur DELAHAYE

12 Influence of the channel
GDR SUSY 2008 Strasbourg IPHC Timur DELAHAYE

13 GDR SUSY 2008 Strasbourg IPHC Timur DELAHAYE
Total flux GDR SUSY 2008 Strasbourg IPHC Timur DELAHAYE

14 GDR SUSY 2008 Strasbourg IPHC Timur DELAHAYE
Positron fraction GDR SUSY 2008 Strasbourg IPHC Timur DELAHAYE

15 GDR SUSY 2008 Strasbourg IPHC Timur DELAHAYE
Secondary positrons The source term The calculated flux Positron background: theoretical uncertainties with R. Lineros, J. Lavalle, P. Salati, F. Donato, N. Fornengo and R. Taillet (in preparation) GDR SUSY 2008 Strasbourg IPHC Timur DELAHAYE

16 GDR SUSY 2008 Strasbourg IPHC Timur DELAHAYE
Cross sections GDR SUSY 2008 Strasbourg IPHC Timur DELAHAYE

17 GDR SUSY 2008 Strasbourg IPHC Timur DELAHAYE
Cross sections GDR SUSY 2008 Strasbourg IPHC Timur DELAHAYE

18 GDR SUSY 2008 Strasbourg IPHC Timur DELAHAYE
Source term GDR SUSY 2008 Strasbourg IPHC Timur DELAHAYE

19 GDR SUSY 2008 Strasbourg IPHC Timur DELAHAYE
Flux at the Earth GDR SUSY 2008 Strasbourg IPHC Timur DELAHAYE

20 GDR SUSY 2008 Strasbourg IPHC Timur DELAHAYE
What is next ? Diffusive reacceleration and other « negligible » terms. Data !!! Fit by specific sets of parameters => constraints on DM (?) GDR SUSY 2008 Strasbourg IPHC Timur DELAHAYE

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