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${{\mathit \Delta}{(1232)}}$ MAGNETIC MOMENTS

${{\mathit \Delta}{(1232)}^{++}}$ MAGNETIC MOMENT

INSPIRE  

The values are extracted from UCLA and SIN data on ${{\mathit \pi}^{+}}{{\mathit p}}$ bremsstrahlung using a variety of different theoretical approximations and methods. Our estimate is $\mathit only$ a rough guess of the range we expect the moment to lie within.

VALUE (${{\mathit \mu}_{{N}}}$ ) DOCUMENT ID TECN  COMMENT • • We do not use the following data for averages, fits, limits, etc. • • $6.14$ $\pm0.51$ LOPEZCASTRO 2001 DPWA ${{\mathit \pi}^{+}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit \pi}^{+}}{{\mathit p}}{{\mathit \gamma}}$ $4.52$ $\pm0.50$ $\pm0.45$ BOSSHARD 1991 ${{\mathit \pi}^{+}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit \pi}^{+}}{{\mathit p}}{{\mathit \gamma}}$ (SIN data) $3.7\text{ to }4.2 $ LIN 1991 B ${{\mathit \pi}^{+}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit \pi}^{+}}{{\mathit p}}{{\mathit \gamma}}$ (from UCLA data) $4.6\text{ to }4.9 $ LIN 1991 B ${{\mathit \pi}^{+}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit \pi}^{+}}{{\mathit p}}{{\mathit \gamma}}$ (from SIN data) $5.6\text{ to }7.5 $ WITTMAN 1988 ${{\mathit \pi}^{+}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit \pi}^{+}}{{\mathit p}}{{\mathit \gamma}}$ (from UCLA data) $6.9\text{ to }9.8 $ HELLER 1987 ${{\mathit \pi}^{+}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit \pi}^{+}}{{\mathit p}}{{\mathit \gamma}}$ (from UCLA data) $4.7\text{ to }6.7 $ NEFKENS 1978 ${{\mathit \pi}^{+}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit \pi}^{+}}{{\mathit p}}{{\mathit \gamma}}$ (UCLA data)

References:

LOPEZCASTRO 2001 PL B517 339 Determination of the ${{\mathit \Delta}^{++}}$ Magnetic Dipole Moment Also NP A697 440 Elastic and Radiative ${{\mathit \pi}^{+}}{{\mathit p}}$ Scattering and Properties of the ${{\mathit \Delta}^{++}}$ Resonance BOSSHARD 1991 PR D44 1962 Analyzing Power in Pion Proton Bremsstrahlung, and the ${{\mathit \Delta}{(1232)}^{++}}$ Magnetic Moment Also PRL 64 2619 Polarized Target Asymmetry in Pion Proton Bremsstrahlung at 298 GeV LIN 1991B PR C44 1819 Pion Proton Bremsstrahlung Calculation and the “Experimental” Magnetic Moment of ${{\mathit \Delta}{(1232)}^{++}}$ Also PR C43 R930 Soft Photon Analysis of Pion-Proton Bremsstrahlung and the “Experimental” Magnetic Moment of ${{\mathit \Delta}{(1232)}^{++}}$ WITTMAN 1988 PR C37 2075 A Covariant Approach to ${{\mathit \pi}^{+}}$ Proton Bremsstrahlung HELLER 1987 PR C35 718 Pion-Nucleon Bremsstrahlung and ${{\mathit \Delta}}$ Electromagnetic Moments NEFKENS 1978 PR D18 3911 Differential Cross Sections for Pion Proton Bremsstrahlung at 269, 298, and 324 MeV

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