Magnetic Moments of $Δ^{++}$ and $Ω^-$ from QCD Sum Rules

Details Magnetic Moments of $Δ^{++}$ and $Ω^-$ from QCD Sum Rules Magnetic Moments of $Δ^{++}$ and $Ω^-$ from QCD Sum Rules

1997-07-21

arxiv.org/abs/hep-ph/9707411v1

Phys.Lett. B419 (1998) 14-18

Physics

High Energy Physics

High Energy Physics - Phenomenology

10 pages, RevTex, 1 PS figure embedded with psfig.sty

Scientific paper

10.1016/S0370-2693(97)01312-9

QCD sum rules for the magnetic moments of $\Delta^{++}$ and $\Omega^-$ are derived using the external field method. They are analyzed by a Monte-Carlo based procedure, using realistic estimates of the QCD input parameters. The results are consistent with the measured values, despite relatively large errors that can be attributed mostly to the poorly-known vacuum susceptibility $\chi$. It is shown that a 30% level accuracy can be achieved in the derived sum rules, provided the QCD input parameters are improved to the 10% level.

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