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Neutron-neutron fusion

Shung-ichi Ando
(
- TRIUMF
)
,
Kuniharu Kubodera
(
- South Carolina U.
)

Jul, 2005

14 pages

Published in:

Phys.Lett.B 633 (2006) 253-259

e-Print:

nucl-th/0507048 [nucl-th]

DOI:

10.1016/j.physletb.2005.11.085

Report number:

USC-NT-05-06,
TRI-PP-05-25

View in:

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Abstract:

The neutron-neutron fusion process,

nn\to de\nu

, at very low neutron energies is studied in the framework of pionless effective field theory that incorporates dibaryon fields. The cross section and electron energy spectrum for this process are calculated up to next-to-leading order. We include the radiative corrections of

{\cal O}(\alpha)

calculated for the one-body transition amplitude. The precision of our theoretical estimates is found to be governed essentially by the accuracy with which the empirical values of the neutron-neutron scattering length and effective range are currently known. Also discussed is the precision of theoretical estimates of the transition rates of related electroweak processes in few-nucleon systems.

n n: fusion
effective Lagrangian
baryon resonance: dibaryon
n n: scattering amplitude
partial wave
electron: energy spectrum
perturbation theory: higher-order
radiative correction
numerical calculations
n n --> deuteron electron neutrino

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Figures(0)

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