pdgLive Home   >   LIGHT UNFLAVORED MESONS ($\mathit S$ = $\mathit C$ = $\mathit B$ = 0)   >   ${{\mathit a}_{{1}}{(1420)}}$   >   ${{\mathit a}_{{1}}{(1420)}}$ WIDTH

${{\mathit a}_{{1}}{(1420)}}$ WIDTH

INSPIRE   PDGID:

M230W

VALUE (MeV) EVTS DOCUMENT ID TECN  COMMENT $161$ ${}^{+11}_{-14}$ 46M 1 AGHASYAN 2018 B COMP 190 ${{\mathit \pi}^{-}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit \pi}^{-}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit p}}$ • • We do not use the following data for averages, fits, limits, etc. • • $153$ ${}^{+8}_{-23}$ 2, 3 ADOLPH 2015 C COMP 190 ${{\mathit \pi}^{-}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit \pi}^{-}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit p}}$ 1  Statistical error negligible. 2  Using the isobar model and partial-wave analysis with 88 waves. 3  Superseded by AGHASYAN 2018B.

References:

AGHASYAN 2018B PR D98 092003 Light isovector resonances in $\pi^- p \to \pi^-\pi^-\pi^+ p$ at 190 GeV/${\it c}$ ADOLPH 2015C PRL 115 082001 Observation of a New Narrow Axial-Vector Meson ${{\mathit a}_{{1}}{(1420)}}$