Whr did the elecrons come from?

  • #1

Main Question or Discussion Point

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
1,047
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
7,771
419
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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