rho meson exchange three-body force effects

Sasakawa, T.; Ishikawa, S.; Wu, Y.; Saito, T.Y.

doi:10.1103/PhysRevLett.68.3503

rho meson exchange three-body force effects

1992

4 pages

Published in:

Phys.Rev.Lett. 68 (1992) 3503-3506

DOI:

10.1103/PhysRevLett.68.3503

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Abstract: (APS)

For each of several proposed π-meson cutoff masses (Λπ) in the πNN form factor, we obtained ρ-meson cutoff mass (Λρ) in the ρNN form factor so that the three-body force with these form factors may reproduce the triton binding energy. We calculated the wave function and the exchange current in the Gamow-Teller matrix element for the triton beta decay, consistently using these form factors. The most favorable set Λπ=0.81 GeV and Λρ=1.13 GeV yielded a triton binding energy of 8.485 MeV (experimentally, 8.482 MeV) and a Gamow-Teller matrix element divided by √3 0f 0.955 (experimentally, 0.961).

form factor: (2nucleon pi)
(2nucleon pi): form factor
rho(770): exchange
exchange: rho(770)
tritium: semileptonic decay
semileptonic decay: tritium
wave function
current: exchange
exchange: current
three-body problem

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