Fine-tuning the basic forces of nature through the triple-alpha process   in red giant stars
  We show that the synthesis of carbon and oxygen through the triple-alpha process in red giant stars is extremely sensitive to the fine details of the nucleon-nucleon (N-N) interaction. A +/-0.5% change in the strength of the N-N force would reduce either the carbon or oxygen abundance by as much as a factor of 30-1000. This result may be used to constrain some fundamental parameters of the Standard Model. 
Attila Csoto (Eotvos University, Budapest), Heinz Oberhummer (Vienna   University of Technology), Helmut Schlattl (Max-Planc...