time of baryon asymmetry

[spidey]

Anyone knows at what time after big bang, baryon asymmetry happened..i read in Simon singh's book "Big Bang" that there was more mater than antimatter when the temperature of universe was 10^15...anyone knows about the time at which it happened?

[Arch2008]

http://www.guardian.co.uk/science/2008/apr/26/universe.physics

This says 10^-32 second after the BB.

[spidey]

http://www.guardian.co.uk/science/2008/apr/26/universe.physics

This says 10^-32 second after the BB.

many thanks..it has many info..