Effects of theta on the deuteron binding energy and the triple-alpha process

Details Effects of theta on the deuteron binding energy and the triple-alpha process Effects of theta on the deuteron binding energy and the triple-alpha process

2008-11-10

arxiv.org/abs/0811.1599v2

Phys.Rev.D81:025011,2010

Physics

High Energy Physics

High Energy Physics - Phenomenology

17 pages, 7 figures, references added

Scientific paper

10.1103/PhysRevD.81.025011

We study the effects that a non zero strong-CP-violating parameter theta would have on the deuteron and diproton binding energies and on the triple-alpha process. Both these systems exhibit fine tuning, so it is plausible that a small change in the nuclear force would produce catastrophic consequences. Such a nuclear force is here understood in the framework of an effective Lagrangian for pions and nucleons, and the strength of the interaction varies with theta. We find that the effects are not too dramatic.

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