${{\boldsymbol N}{(1440)}}$ BREIT-WIGNER PHOTON DECAY AMPLITUDES

${{\boldsymbol N}{(1440)}}$ $\rightarrow$ ${{\boldsymbol n}}{{\boldsymbol \gamma}}$ , helicity-1/2 amplitude A$_{1/2}$ INSPIRE search

VALUE (GeV${}^{−1/2}$) DOCUMENT ID TECN  COMMENT
$\bf{ 0.035\text{ to }0.055\text{ }(\approx0.045) }$ OUR ESTIMATE
$0.013$ $\pm0.012$ 1
HUNT
2019
DPWA Multichannel
$0.043$ $\pm0.012$
ANISOVICH
2013B
DPWA Multichannel
$0.048$ $\pm0.004$ 1
CHEN
2012A
DPWA ${{\mathit \gamma}}$ ${{\mathit N}}$ $\rightarrow$ ${{\mathit \pi}}{{\mathit N}}$
• • • We do not use the following data for averages, fits, limits, etc. • • •
$0.040$ $\pm0.005$ 1
SHRESTHA
2012A
DPWA Multichannel
$0.054$
DRECHSEL
2007
DPWA ${{\mathit \gamma}}$ ${{\mathit N}}$ $\rightarrow$ ${{\mathit \pi}}{{\mathit N}}$
$0.121$
PENNER
2002D
DPWA Multichannel
1  Statistical error only.
  References:
HUNT 2019
PR C99 055205 Updated determination of $N^*$ resonance parameters using a unitary, multichannel formalism
ANISOVICH 2013B
EPJ A49 67 Helicity Amplitudes for Photoexcitation of Nucleon Resonances off Neutrons
CHEN 2012A
PR C86 015206 Amplitude Analysis of ${{\mathit \gamma}}$ ${{\mathit n}}$ $\rightarrow$ ${{\mathit \pi}^{-}}{{\mathit p}}$ Data above 1 GeV
SHRESTHA 2012A
PR C86 055203 Multichannel Parametrization of ${{\mathit \pi}}{{\mathit N}}$ Scattering Amplitudes and Extraction of Resonance Parameters
DRECHSEL 2007
EPJ A34 69 Unitary Isobar Model $−$ MAID2007
PENNER 2002D
PR C66 055212 Vector Meson Production and Nucleon Resonance Analysis in a Coupled Channel Approach for Energies ${\mathit m}_{{{\mathit N}}}$ $<$ $\sqrt {s }$ $<$ 2 GeV. 2. Photon Induced Results