${{\boldsymbol N}{(1680)}}$ BREIT-WIGNER PHOTON DECAY AMPLITUDES

${{\boldsymbol N}{(1680)}}$ $\rightarrow$ ${{\boldsymbol p}}{{\boldsymbol \gamma}}$ , helicity-1/2 amplitude A$_{1/2}$ INSPIRE search

VALUE (GeV${}^{−1/2}$) DOCUMENT ID TECN  COMMENT
$\bf{ -0.018\text{ to }-0.005\text{ }(\approx-0.010) }$ OUR ESTIMATE
$-0.0278$ $\pm0.0036$
GOLOVATCH
2019
DPWA ${{\mathit \gamma}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit p}}$
$-0.026$ $\pm0.004$ 1
HUNT
2019
DPWA Multichannel
$-0.015$ $\pm0.002$
SOKHOYAN
2015A
 DPWA Multichannel
$0.003$ $\pm0.001$ 1
SHKLYAR
2013
DPWA Multichannel
$-0.007$ $\pm0.002$ 1
WORKMAN
2012A
 DPWA ${{\mathit \gamma}}$ ${{\mathit N}}$ $\rightarrow$ ${{\mathit N}}{{\mathit \pi}}$
$-0.017$ $\pm0.001$ 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. • • •
$-0.013$ $\pm0.003$
ANISOVICH
2012A
 DPWA Multichannel
$-0.017$ $\pm0.001$ 1
SHRESTHA
2012A
 DPWA Multichannel
$-0.025$
DRECHSEL
2007
DPWA ${{\mathit \gamma}}$ ${{\mathit N}}$ $\rightarrow$ ${{\mathit \pi}}{{\mathit N}}$
1  Statistical error only.
  References:
GOLOVATCH 2019
PL B788 371 First results on nucleon resonance photocouplings from the $\gamma p \to \pi^+\pi^-p$ reaction
HUNT 2019
PR C99 055205 Updated determination of $N^*$ resonance parameters using a unitary, multichannel formalism
SOKHOYAN 2015A
EPJ A51 95 High-Statistics Study of the Reaction ${{\mathit \gamma}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit p}}$2 ${{\mathit \pi}^{0}}$
SHKLYAR 2013
PR C87 015201 Eta-meson Production in the Resonance Energy Region
ANISOVICH 2012A
EPJ A48 15 Properties of Baryon Resonances from a Multichannel Partial Wave Analysis
SHRESTHA 2012A
PR C86 055203 Multichannel Parametrization of ${{\mathit \pi}}{{\mathit N}}$ Scattering Amplitudes and Extraction of Resonance Parameters
WORKMAN 2012A
PR C86 015202 Unified Chew-Mandelstam SAID Analysis of Pion Photoproduction Data
DRECHSEL 2007
EPJ A34 69 Unitary Isobar Model $−$ MAID2007
DUGGER 2007
PR C76 025211 ${{\mathit \pi}^{0}}$ Photoproduction on the Proton for Photon Energies from 0.675 to 2.875 GeV