$Nd\to{^3H}γ$ with Effective Field Theory

Details $Nd\to{^3H}γ$ with Effective Field Theory $Nd\to{^3H}γ$ with Effective Field Theory

2004-11-28

arxiv.org/abs/nucl-th/0411114v3

Nucl.Phys. A753 (2005) 291-304

Physics

Nuclear Physics

Nuclear Theory

16 pages, 9 figures, 1 table, Version to be published by Nucl. Phys. A

Scientific paper

10.1016/j.nuclphysa.2005.03.004

The cross section of neutron-deuteron radiative capture $n d\to {^3H}\gamma$ is calculated at energies relevant to Big-Bang nucleosynthesis ($ 20 \leq E \leq 200 $ Kev) with pionless Effective Field Theory. At these energies, magnetic transition M1 gives the dominant contribution. The M1 amplitude is calculated up to next-to-next-to leading order(N$^2$LO) with insertion of three-body force. Results are in good agreement within few percent theoretical uncertainty in comparison with available calculated data below E=200 Kev.

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