pdgLive Home   >   LIGHT UNFLAVORED MESONS ($\mathit S$ = $\mathit C$ = $\mathit B$ = 0)   >   ${{\mathit \pi}_{{{1}}}{(1400)}}$   >   ${{\mathit \pi}_{{{1}}}{(1400)}}$ MASS

${{\mathit \pi}_{{{1}}}{(1400)}}$ MASS

INSPIRE   PDGID:

M111M

VALUE (MeV) EVTS DOCUMENT ID TECN CHG  COMMENT $1257$ $\pm20$ $\pm25$ 23.5k ADAMS 2007 B B852 18 ${{\mathit \pi}^{-}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit \eta}}{{\mathit \pi}^{0}}{{\mathit n}}$ $1384$ $\pm20$ $\pm35$ 90k SALVINI 2004 OBLX ${{\overline{\mathit p}}}$ ${{\mathit p}}$ $\rightarrow$ 2 ${{\mathit \pi}^{+}}$2 ${{\mathit \pi}^{-}}$ $1360$ $\pm25$ ABELE 1999 CBAR $0.0$ ${{\overline{\mathit p}}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit \pi}^{0}}{{\mathit \pi}^{0}}{{\mathit \eta}}$ $1400$ $\pm20$ $\pm20$ ABELE 1998 B CBAR 0.0 ${{\overline{\mathit p}}}$ ${{\mathit n}}$ $\rightarrow$ ${{\mathit \pi}^{-}}{{\mathit \pi}^{0}}{{\mathit \eta}}$ $1370$ $\pm16$ ${}^{+50}_{-30}$ 1 THOMPSON 1997 MPS 18 ${{\mathit \pi}^{-}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit \eta}}{{\mathit \pi}^{-}}{{\mathit p}}$ • • We do not use the following data for averages, fits, limits, etc. • • $1323.1$ $\pm4.6$ 2 AOYAGI 1993 BKEI ${{\mathit \pi}^{-}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit \eta}}{{\mathit \pi}^{-}}{{\mathit p}}$ $1406$ $\pm20$ 3 ALDE 1988 B GAM4 0 100 ${{\mathit \pi}^{-}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit \eta}}{{\mathit \pi}^{0}}{{\mathit n}}$ 1  Natural parity exchange, questioned by DZIERBA 2003. 2  Unnatural parity exchange. 3  Seen in the ${\mathit P}_{\mathrm 0}{\mathrm -wave}$ intensity of the ${{\mathit \eta}}{{\mathit \pi}^{0}}$ system, unnatural parity exchange.

References