Opening the window to the cogenesis with Affleck-Dine mechanism in
  gravity mediation
  The observed baryon and dark matter densities are equal up to a factor of 5.
This observation indicates that the baryon asymmetry and dark matter have the
same origin. The Affleck-Dine baryogenesis is one of the most promising
mechanisms in this context. Q balls, which are often formed in the early
Universe associated with the Affleck-Dine baryogenesis, decay both into
supersymmetric particles and into quarks. Recently, it was pointed out that
annihilation of squarks into quarks gives a dominant contribution to the Q-ball
decay rate and the branching ratio of Q-ball decay into supersymmetric
particles changes from the previous estimate. In this paper, the scenario of
baryon and dark matter cogenesis from Q ball in gravity mediation is revisited
in respect of the improved Q-ball decay rates. It is found that the successful
cogenesis takes place when a wino with mass 0.3-1 TeV is dark matter.
