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${{\mathit \Delta}{(1620)}}$ BREIT-WIGNER PHOTON DECAY AMPLITUDES

${{\mathit \Delta}{(1620)}}$ $\rightarrow$ ${{\mathit N}}{{\mathit \gamma}}$ , helicity-1/2 amplitude A$_{1/2}$

INSPIRE   PDGID:

B082A1

VALUE (GeV${}^{−1/2}$) DOCUMENT ID TECN  COMMENT $\bf{ 0.030\text{ to }0.060\text{ }(\approx0.050) }$ OUR ESTIMATE $0.029$ $\pm0.0062$ GOLOVATCH 2019 DPWA ${{\mathit \gamma}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit p}}$ $0.0124$ $\pm0.0007$ 1 HUNT 2019 DPWA Multichannel $0.055$ $\pm0.007$ SOKHOYAN 2015 A DPWA Multichannel $0.029$ $\pm0.003$ 1 WORKMAN 2012 A DPWA ${{\mathit \gamma}}$ ${{\mathit N}}$ $\rightarrow$ ${{\mathit N}}{{\mathit \pi}}$ $0.050$ $\pm0.002$ 1 DUGGER 2007 DPWA ${{\mathit \gamma}}$ ${{\mathit N}}$ $\rightarrow$ ${{\mathit \pi}}{{\mathit N}}$ • • We do not use the following data for averages, fits, limits, etc. • • $0.052$ $\pm0.005$ ANISOVICH 2012 A DPWA Multichannel $-0.003$ $\pm0.003$ 1 SHRESTHA 2012 A DPWA Multichannel $0.066$ DRECHSEL 2007 DPWA ${{\mathit \gamma}}$ ${{\mathit N}}$ $\rightarrow$ ${{\mathit \pi}}{{\mathit N}}$ $-0.050$ PENNER 2002 D DPWA Multichannel 1  Statistical error only.

References

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