Overview of Leptogenesis and Dark Matter Study
This study delves into the intriguing connection between leptogenesis and dark matter, exploring the model, Higgs potential, CP asymmetry, decay parameters, washout effects, parameter space, and constraints. The research sheds light on the interplay between these two fundamental aspects of particle physics.
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Presentation Transcript
LEPTOGENESIS and DARK MATTER Ang Liu,Zhi-Long Han,Yi Jin,Fa-Xin Yang University of Jinan October 24,2019
Overview The Model Leptogenesis Dark Matter
Model ????? and Dark Sector R N yNR L ?? DM LG
Model Higgs Potential
Model 2 = = 2 1 T T PMNS U m ym y R U m N PMNS i c c s c s e 12 13 12 s 13 s 13 i i 2 2 = i i U s c c s s e c c s e s c diag ( e 1 , , e ) 1 2 PMNS 12 s 23 12 c 23 s 13 e 12 c 23 s 12 s 23 c 13 s 23 13 i i s c e c c 12 23 12 23 13 12 23 13 23 13 23 13 1 ( )2 2 1 = 2 y U m R m N PMNS R
LEPTOGENESIS CP asymmetry
LEPTOGENESIS ( 1 z ) M = = 1 K = D K z 1 z = H ( z 1 ) ( 2 z ) T 4 1 2 186 . 0 z 246 GeV M m = 3 = + WID Kz ( 1 z ) 1 WL W W W = 2 2 10 eV 10 GeV = ID L 2 4 28 28 = = Y Y Y ( ) B B L L 79 51
LEPTOGENESIS Decay Parameter
LEPTOGENESIS Washout Effect
LEPTOGENESIS Washout Effect
LEPTOGENESIS Parameter Space
DARK MATTER dY 45 Y = 3 N N Kz ( 1 z )( BR ) l 4 eq N dz 2 g Y dY 45 BR 45 BR Y 1 Y ( = + = N 3 3 N Kz [ ( 1 z ) BR U l z )] Kz ( 1 z ) 4 eq N 4 eq N dz 2 2 g Y 2 g Y
DARK MATTER Constraint Free Streaming Length a v v a t a t = = + eq eq eq NR dt da 0.624 In FS 2 a a a H a H rh rh NR 0 R 1 1 T g 0 , rh 3 = aFIMP NR 0 2 K 2 m g , 1 1 m keV 50 K 50 2 FIMP FS + 2 2 2 . 8 10 ( 1 09 . 0 In ( ) Mpc m K keV FIMP FS 0.01 Mpc Mpc 1 . 0
DARK MATTER m BR K FIMP 2 h 12 . 0 3 keV 25 10
CONCLUSIONS ?????ge Dark sector nesis Dark Matter ????? CP asymmetry is enhanced by small Washout effect is enhanced by small and big M 1 Mass of FIMP is keV 4 . 0 m keV 4 . 3
