pdgLive

${{\mathit \Delta}{(1950)}}$ BREIT-WIGNER MASS

VALUE (MeV)

DOCUMENT ID

TECN

COMMENT

$\bf{ 1915\text{ to }1950\text{ }(\approx1930) }$

OUR ESTIMATE

$1943$ $\pm18$

DPWA

${{\mathit \gamma}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit p}}$

$1913$ $\pm4$

DPWA

Multichannel

$1917$ $\pm4$

DPWA

Multichannel

$1921.3$ $\pm0.2$

DPWA

${{\mathit \pi}}$ ${{\mathit N}}$ $\rightarrow$ ${{\mathit \pi}}{{\mathit N}}$ , ${{\mathit \eta}}{{\mathit N}}$

$1950$ $\pm15$

IPWA

${{\mathit \pi}}$ ${{\mathit N}}$ $\rightarrow$ ${{\mathit \pi}}{{\mathit N}}$

$1913$ $\pm8$

IPWA

${{\mathit \pi}}$ ${{\mathit N}}$ $\rightarrow$ ${{\mathit \pi}}{{\mathit N}}$

• • We do not use the following data for averages, fits, limits, etc. • •

$1917$ $\pm4$

DPWA

Multichannel

$1917$ $\pm4$

DPWA

Multichannel

$1915$ $\pm6$

DPWA

Multichannel

$1918$ $\pm1$

DPWA

Multichannel

$1936$ $\pm5$

DPWA

Multichannel

¹	Statistical error only.

References:

PL B788 371

First results on nucleon resonance photocouplings from the $\gamma p \to \pi^+\pi^-p$ reaction

PR C99 055205

Updated determination of $N^*$ resonance parameters using a unitary, multichannel formalism

PL B766 357

Evidence for ${{\mathit \Delta}{(2200)}}7/2{}^{-}$ from Photoproduction and Consequence for Chiral-Symmetry Restoration at High Mass

EPJ A51 95

High-Statistics Study of the Reaction ${{\mathit \gamma}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit p}}$2 ${{\mathit \pi}^{0}}$

EPJ A50 74

High Statistics Study of the Reaction

EPJ A48 15

Properties of Baryon Resonances from a Multichannel Partial Wave Analysis

PR C86 055203

Multichannel Parametrization of ${{\mathit \pi}}{{\mathit N}}$ Scattering Amplitudes and Extraction of Resonance Parameters

PR C74 045205

Extended Partial-Wave Analysis of ${{\mathit \pi}}{{\mathit N}}$ Scattering Data

PRPL 328 181

Baryon Resonance Extraction from ${{\mathit \pi}}$ N Data using a Unitary Multichannel Model

Toronto Conf. 19

Pion $−$ Nucleon Partial Wave Analysis

PR D20 2839

Pion Nucleon Partial Wave Amplitudes

PDAT 12-1

Handbook of Pion Nucleon Scattering

Toronto Conf. 3

The Karlsruhe-Helsinki ${{\mathit \pi}}{{\mathit N}}$ Elastic Partial Wave Analysis

Except where otherwise noted, content of the 2023 Review of Particle Physics is licensed under a Creative Commons Attribution-NonCommercial 4.0 International (CC BY-NC 4.0) license. The publication of the Review of Particle Physics is supported by US DOE, MEXT (Japan), INFN (Italy), JPS and CERN. Individual collaborators receive support for their PDG activities from their respective institutes or funding agencies. © 2023. See LBNL disclaimers.