Introduction Gamma Rays from Dark Matter Annihilation 可用暗物质s波湮灭,XX→b,解释。要求 mx~35GeV,(ov)y=0~2×102cm3s-1 d. (ou) dA dsdE STim dE ds p(rs, S2))2 Particle Physics Astrophysics Factor Factor Characteristic Energy Spectrum Dark matter s10 NPW. 2.128 31030.i
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Introduction Dark Matter and Thermal production Thermal production of WIMPs From Alejandro Ibarra's talk Early Universe DM Increasing f,h, I m/Ttm。103 1101102 Mh2≈0.11 3×10-20cm3s (aannD)
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Introduction arXiv:1402.6703 rxiv:1409.0042 broken PI DM TTT NFW,y=1.26 … PL with exp. cutoff -. DM bb 至sC. excess spectrum with > 010-6 10 3之 重要进展:考虑了宇宙线前景和背景带来的误差
arXiv: 1402.6703 arXiv: 1409.0042 Introduction 18 重要进展：考虑了宇宙线前景和背景带来的误差
Introduction cooper,14026703 F. Calore,14114647 DM annihilation(Simplified mode)-=tsai systematic uncertainties included a uu.ddx2=331 more channels available ·DM+DM→ Pleral-0.3 Gev/cm 7=1.26 3e √bb,ca,ss,t+τ, light quarks m、GeV …me a,=120Ge wtw-.zz.hh,tt 765 ha. aa D D 1502.0 406080100120140160180406080100120140160180
DM annihilation (Simplified model) D. Hooper, 1402.6703 F. Calore, 1411.4647 T. Gherghetta 1502.07173 • systematic uncertainties included more channels available • DM + DM → ✓ 𝑏𝑏ത, 𝑐𝑐ҧ, 𝑠𝑠ҧ, 𝜏 +𝜏 −, light quarks ✓ 𝑊+𝑊−,𝑍𝑍, ℎℎ,𝑡𝑡 ✓ ℎ𝑎, 𝑎𝑎 Introduction 19
Introduction 考虑实验对超粒子质量谱限制后,MSSM不能解释银心宇宙线超出 暗物质残留密度要求mx40eV,排除x→T行,q °mH之300GeV,排除迎→bb; p波压低,排除X→hh ●纯粹的湮灭→WW,Zz不能产生正确的光谱形状。 重要的结论: NMSSM非常适合用来解释银心宇宙线超出! ρ为了解释银心宇宙线超出,需要较轻的暗物质粒子,同时也需要其他轻粒 子作为中间态或作为湮灭末态: NMSSM中单态场为主的粒子(x,A1,H)可以同时轻于约100GeV。 单态场之间的自耦合相互作用能产生解释银心超出所需湮灭截面。 ●在 NMSSM中,暗物质湮灭不被p波压低的湮灭过程有 xx→bb,HA1,Ww,Zz
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