Whr did the elecrons come from?

  • #1
when we talk abt BBN, we only talk abt the nucleons. whr did th electrons come from? was it just beta decay or something else?
 

Answers and Replies

  • #2
hellfire
Science Advisor
1,051
1
Actually nucleons did not form during big-bang nucleosynthesis. The big-bang nucleosynthesis fuses them into light elements, fixing relative abundances of the elements. The nucleons formed previously in a period or process called baryogenesis. For electrons, the corresponding process is called leptogenesis.
 
  • #3
29
0
At what time frame do photon's appear in the current Big Bang Theory?
 
  • #4
mathman
Science Advisor
8,053
538
At what time frame do photon's appear in the current Big Bang Theory?

At the very beginning.
 
  • #5
529
1
Actually nucleons did not form during big-bang nucleosynthesis. The big-bang nucleosynthesis fuses them into light elements, fixing relative abundances of the elements. The nucleons formed previously in a period or process called baryogenesis. For electrons, the corresponding process is called leptogenesis.

'Leptogenesis'. That's such a beautiful word! Now to casually drop that into a conversation when buying milk.
 

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