DELTA ISOBAR CONTRIBUTIONS TO THE CHARGE ASYMMETRY OF THE THREE NUCLEON BOUND STATES - INSPIRE

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DELTA ISOBAR CONTRIBUTIONS TO THE CHARGE ASYMMETRY OF THE THREE NUCLEON BOUND STATES

1982

17 pages

Published in:

Nucl.Phys.A 386 (1982) 460-476

Published: 1982

DOI:

10.1016/0375-9474(82)90031-8

View in:

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Abstract: (Elsevier)

Mechanisms of isospin violation in the nuclear force due to the Δ-isobar are studied. They arise from the coupling of the Δ to the photon and from the charge splitting of the Δ-mass. The charge-asymmetry contribution of the Δ to the 3 He- 3 H binding-energy difference is calculated. Cancellations between different mechanisms are found yielding a small total result. The effect of the photon-induced Δ-excitation, traditionally considered, is negligible. The uncertainty in the Δ-mass splitting shows up in a sizeable theoretical uncertainty for the total result.

BOUND STATE: (3NUCLEON)
NUCLEAR FORCE
VIOLATION: ISOSPIN
ISOSPIN: VIOLATION
DELTA(1232): EFFECT
CHARGE: ASYMMETRY
MODEL: ISOBAR
PHOTON: EXCHANGE
EXCHANGE: PHOTON
NUMERICAL CALCULATIONS

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