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TANGO in PARIS IAP Paris - 06.05.2009 O. Adriani et al. (PAMELA Collab.), arXiv:0810.4995v1 [astro-ph] & Nature orino (Italy) Nicolao F Nicolao Forneng ornengo, Univ o, Univer ersity of T sity of T orino and INFN- orino and INFN-T

  1. TANGO in PARIS IAP – Paris - 06.05.2009

  2. O. Adriani et al. (PAMELA Collab.), arXiv:0810.4995v1 [astro-ph] & Nature orino (Italy) Nicolao F Nicolao Forneng ornengo, Univ o, Univer ersity of T sity of T orino and INFN- orino and INFN-T orino (Italy) T ANGO in P ANGO in Paris - 06.05.2009 aris - 06.05.2009

  3. I.V. Moskalenko, A.W. Strong, Ap. J. 493, (1998) 694 orino (Italy) Nicolao F Nicolao Forneng ornengo, Univ o, Univer ersity of T sity of T orino and INFN- orino and INFN-T orino (Italy) T ANGO in P ANGO in Paris - 06.05.2009 aris - 06.05.2009

  4. T . Delahaye, R. Lineros, F . Donato, N. Fornengo, J. Lavalle, P . Salati, R. T aillet, arXiv:0809.5268 [astro-ph ( to appear in AA) orino (Italy) Nicolao Forneng Nicolao F ornengo, Univ o, Univer ersity of T sity of T orino and INFN-T orino and INFN- orino (Italy) T ANGO in P ANGO in Paris - 06.05.2009 aris - 06.05.2009

  5. m X = 100 GeV � σ v � = 2 . 1 · 10 − 26 cm 3 s − 1 For annihilation cross section consistent with WMAP for a thermal relic T . Delahaye, R. Lineros, F . Donato, N. Fornengo, P . Salati, Phys. Rev. D 77 (2008) 063527 orino (Italy) Nicolao Forneng Nicolao F ornengo, Univ o, Univer ersity of T sity of T orino and INFN-T orino and INFN- orino (Italy) T ANGO in Paris - 06.05.2009 ANGO in P aris - 06.05.2009

  6. m X = 100 GeV � σ v � = 2 . 1 · 10 − 26 cm 3 s − 1 B = 10 B = 50 PAMELA 2008 T . Delahaye, R. Lineros, F . B = 30 B = 40 Donato, N. Fornengo, P . Salati, Phys. Rev. D 77 (2008) 063527 For annihilation cross section consistent with WMAP for a thermal relic Smooth NFW halo orino (Italy) Nicolao F Nicolao Forneng ornengo, Univ o, Univer ersity of T sity of T orino and INFN-T orino and INFN- orino (Italy) T ANGO in Paris - 06.05.2009 ANGO in P aris - 06.05.2009

  7. m X = 500 GeV � σ v � = 2 . 1 · 10 − 26 cm 3 s − 1 B = 300 B = 250 PAMELA 2008 T . Delahaye, R. Lineros, F . B = 300 B = 400 Donato, N. Fornengo, P . Salati, Phys. Rev. D 77 (2008) 063527 For annihilation cross section consistent with WMAP Smooth NFW halo orino (Italy) Nicolao F Nicolao Forneng ornengo, Univ o, Univer ersity of T sity of T orino and INFN-T orino and INFN- orino (Italy) T ANGO in Paris - 06.05.2009 ANGO in P aris - 06.05.2009

  8. Antiproton/proton fraction Antiproton flux No excess found F . Donato, D. Maurin, P . Brun, T . Delahaye, P . Salati, PRL 102 (2009) 071301 orino (Italy) Nicolao F Nicolao Forneng ornengo, Univ o, Univer ersity of T sity of T orino and INFN-T orino and INFN- orino (Italy) T ANGO in Paris - 06.05.2009 ANGO in P aris - 06.05.2009

  9. F . Donato, D. Maurin, P . Brun, T . Delahaye, P . Salati, PRL 102 (2009) 071301 orino (Italy) Nicolao Forneng Nicolao F ornengo, Univ o, Univer ersity of T sity of T orino and INFN-T orino and INFN- orino (Italy) T ANGO in P ANGO in Paris - 06.05.2009 aris - 06.05.2009

  10. Fit on positron and antiproton data (with S&M background) M. Cirelli, M. Kadastik, M. Raidal, A. Strumia, arXiv:0809.2409v3 [hep-ph] See also: V. Barger, W.-Y. Keung, D. Marfatia, G. Shaughnessy, arXiv:0809.0162v2 [hep-ph] orino (Italy) Nicolao Forneng Nicolao F ornengo, Univ o, Univer ersity of T sity of T orino and INFN- orino and INFN-T orino (Italy) T ANGO in P ANGO in Paris - 06.05.2009 aris - 06.05.2009

  11. M. Cirelli, M. Kadastik, M. Raidal, A. Strumia, arXiv:0809.2409v3 [hep-ph] orino (Italy) Nicolao F Nicolao Forneng ornengo, Univ o, Univer ersity of T sity of T orino and INFN- orino and INFN-T orino (Italy) T ANGO in P ANGO in Paris - 06.05.2009 aris - 06.05.2009

  12. Positrons Antiprotons J. Lavalle, Q. Yuan, D. Maurin, X.J. Bi, A&A 479 (2008) 427 orino (Italy) Nicolao Forneng Nicolao F ornengo, Univ o, Univer ersity of T sity of T orino and INFN- orino and INFN-T orino (Italy) T ANGO in P ANGO in Paris - 06.05.2009 aris - 06.05.2009

  13. M. Lattanzi, J. Silk, arXiv:0812.0360v1 [astro-ph] It may work differently for different annihilation channles (e.g. fermions wrt gauge bosons) β C β H β F For X 0 and X + strongly degenerate See also: J. Hisano, M. Nagai, M. Nojiri, M. Senami, PRL 92 (2004) 031303 J. Hisano, S. Matsumoto, M. Nojiri, S. Saito, PRD, 71 (2005) 063528 M. Cirelli, A. Strumia, M. T amburini, NPB 787 (2007) J. March-Russell, S. M. West, D. Cumberbatch, D. Hooper, JHEP 0807 (2008) 058 N. Arkani-Hamed, D. P . Finkbeiner, T . Slatyer, N. Weiner, arXiv:0810.0713 [hep-ph] M. Cirelli, M. Kadastik, M. Raidal, A. Strumia, arXiv:0809.2409v3 [hep-ph] orino (Italy) Nicolao F Nicolao Forneng ornengo, Univ o, Univer ersity of T sity of T orino and INFN-T orino and INFN- orino (Italy) T ANGO in P ANGO in Paris - 06.05.2009 aris - 06.05.2009

  14. From multiwavelength From CMB 1000 positron 100 10 antiproton radio Thermal relic gamma rays M. Pato, L. Pieri, G. Bertone, 0905.0372v1 [astro-ph.HE] S. Galli, F . Iocco, G. Bertone, A. Melchiorri, arXiv:0905.0003v1 [astro-ph] orino (Italy) Nicolao F Nicolao Forneng ornengo, Univ o, Univer ersity of T sity of T orino and INFN-T orino and INFN- orino (Italy) T ANGO in Paris - 06.05.2009 ANGO in P aris - 06.05.2009

  15. B = � σ v � WMAP / � σ v � WMAP H = H GR [1 + η ( T/T F ) ν ] (for T > T BBM ) GR 2: Brane 1: Kination 0: GR + extra-fields -1: Scalar-T ensor Maximal enchancement of Induced boost Hubble rate at freeze-out consistent with antiproton data Boosts equally leptonic and hadronic channels M. Schelke, R. Catena, N. Fornengo, A. Masiero, M. Pietroni, PRD 74 (2006) 083505 Nicolao F Nicolao Forneng ornengo, Univ o, Univer ersity of T sity of T orino and INFN-T orino and INFN- orino (Italy) orino (Italy) T ANGO in Paris - 06.05.2009 ANGO in P aris - 06.05.2009

  16.  A boost is always required  Annihilation into leptons (but not into “hadronic” channels) ∼ 100 GeV m χ > � 1 . 7 m χ � B ∼ 10 100 GeV  Annihilation into gauge bosons ∼ 10 TeV m χ > m χ � 1 . 4 B ∼ 2 × 10 4 � 10 TeV orino (Italy) Nicolao F Nicolao Forneng ornengo, Univ o, Univer ersity of T sity of T orino and INFN-T orino and INFN- orino (Italy) T ANGO in P ANGO in Paris - 06.05.2009 aris - 06.05.2009

  17. Unusual  Annihilation into leptons (but not into “hadronic” channels) for typical candidates Natural mass range ∼ 100 GeV m χ > � 1 . 7 m χ Astrophysical (up to 10) � B ∼ 10 100 GeV Sommerfeld Cosmological  Annihilation into gauge bosons Naturalness ? ∼ 10 TeV m χ > m χ � 1 . 4 B ∼ 2 × 10 4 � Not astrophysical 10 TeV Sommerfeld Cosmological ? orino (Italy) Nicolao Forneng Nicolao F ornengo, Univ o, Univer ersity of T sity of T orino and INFN-T orino and INFN- orino (Italy) T ANGO in P ANGO in Paris - 06.05.2009 aris - 06.05.2009

  18.  Neutralino: s=1/2 Majorana fermion  Sneutrino: s=0 boson  Gravitino: s=3/2 fermion  Axino: s=1/2 fermion Nicolao F Nicolao Forneng ornengo, Univ o, Univer ersity of T sity of T orino and INFN- orino and INFN-T orino (Italy) orino (Italy) T ANGO in P ANGO in Paris - 06.05.2009 aris - 06.05.2009

  19. Majorana fermion: the non-relativistic annihilation cross section into leptons (especially positrons) is helicity suppressed � σ v � ann ∝ m 2 f Preferred channels: quark production (also gauge or hisggs bosons) Hard to produce leptons without producing also a large amount of antiprotons Positrons spectra are too soft to explain PAMELA raise Nicolao F Nicolao Forneng ornengo, Univ o, Univer ersity of T sity of T orino and INFN- orino and INFN-T orino (Italy) orino (Italy) T ANGO in P ANGO in Paris - 06.05.2009 aris - 06.05.2009

  20. BR into electrons BR into bottoms Configurations with WMAP relic abundance orino (Italy) Nicolao Forneng Nicolao F ornengo, Univ o, Univer ersity of T sity of T orino and INFN- orino and INFN-T orino (Italy) T ANGO in P ANGO in Paris - 06.05.2009 aris - 06.05.2009

  21. → e + e − γ No helicity suppression χχ − suppressed by ( α / π ) ( m 2 e /m 2 instead of � σ v � ann χ ) B = 3 x 10 4 Neutralino in the MSSM Large boost factors still needed L. Bergstrom, T . Bringmann, J. Edsjo, arXiv:0808.3725v3 [astro-ph] orino (Italy) Nicolao F Nicolao Forneng ornengo, Univ o, Univer ersity of T sity of T orino and INFN-T orino and INFN- orino (Italy) T ANGO in Paris - 06.05.2009 ANGO in P aris - 06.05.2009

  22. Scalar boson: the non-relativistic annihilation cross section into leptons is suppressed Sneutrino carry lepton number, therefore their interactions may exhibit preference toward leptons and W (Z-coupling has to be suppressed for viable sneutrino DM) Dominantly annihilate into WW or mixed states Nicolao F Nicolao Forneng ornengo, Univ o, Univer ersity of T sity of T orino and INFN- orino and INFN-T orino (Italy) orino (Italy) T ANGO in P ANGO in Paris - 06.05.2009 aris - 06.05.2009

  23. BR into electrons BR into WW Configurations with WMAP relic abundance orino (Italy) Nicolao Forneng Nicolao F ornengo, Univ o, Univer ersity of T sity of T orino and INFN- orino and INFN-T orino (Italy) T ANGO in P ANGO in Paris - 06.05.2009 aris - 06.05.2009

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