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${{\mathit N}{(1520)}}$ BREIT-WIGNER PHOTON DECAY AMPLITUDES

${{\mathit N}{(1520)}}$ $\rightarrow$ ${{\mathit p}}{{\mathit \gamma}}$ , helicity-1/2 amplitude A$_{1/2}$

INSPIRE   PDGID:

B062A1

VALUE (GeV${}^{−1/2}$) DOCUMENT ID TECN  COMMENT $\bf{ -0.030\text{ to }-0.015\text{ }(\approx-0.025) }$ OUR ESTIMATE $-0.034$ $\pm0.003$ 1 HUNT 2019 DPWA Multichannel $-0.024$ $\pm0.004$ SOKHOYAN 2015 A DPWA Multichannel $-0.015$ $\pm0.001$ 1 SHKLYAR 2013 DPWA Multichannel $-0.019$ $\pm0.002$ 1 WORKMAN 2012 A DPWA ${{\mathit \gamma}}$ ${{\mathit N}}$ $\rightarrow$ ${{\mathit N}}{{\mathit \pi}}$ $-0.028$ $\pm0.002$ 1 DUGGER 2007 DPWA ${{\mathit \gamma}}$ ${{\mathit N}}$ $\rightarrow$ ${{\mathit \pi}}{{\mathit N}}$ $-0.038$ $\pm0.003$ 1 AHRENS 2002 DPWA ${{\mathit \gamma}}$ ${{\mathit N}}$ $\rightarrow$ ${{\mathit \pi}}{{\mathit N}}$ • • We do not use the following data for averages, fits, limits, etc. • • $-0.022$ $\pm0.004$ ANISOVICH 2012 A DPWA Multichannel $-0.034$ $\pm0.001$ 1 SHRESTHA 2012 A DPWA Multichannel $-0.027$ DRECHSEL 2007 DPWA ${{\mathit \gamma}}$ ${{\mathit N}}$ $\rightarrow$ ${{\mathit \pi}}{{\mathit N}}$ $-0.003$ PENNER 2002 D DPWA Multichannel $-0.052$ $\pm0.010$ $\pm0.007$ 1 MUKHOPADHYAY 1998 ${{\mathit \gamma}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit \eta}}{{\mathit p}}$ 1  Statistical error only.

References:

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 AHRENS 2002 PRL 88 232002 The Helicity Amplitudes A$_{1/2}$ and A$_{3/2}$ for the ${{\mathit D}_{{13}}{(1520)}}$ Resonance Obtained from the ${{\mathit \gamma}}$ $↑$ ${{\mathit p}}$ $↑$ $\rightarrow$ ${{\mathit p}}{{\mathit \pi}^{0}}$ Reaction 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 MUKHOPADHYAY 1998 PL B444 7 Extraction of Electrostrong Parameters of ${{\mathit N}^{*}{(1520)}}$ from ${{\mathit \eta}}$ Photoproduction

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