pdgLive Home   >   LIGHT UNFLAVORED MESONS ($\mathit S$ = $\mathit C$ = $\mathit B$ = 0)   >   ${{\mathit \pi}{(1800)}}$   >   ${{\mathit \pi}{(1800)}}$ MASS

${{\mathit \pi}{(1800)}}$ MASS

INSPIRE   PDGID:

M075M

VALUE (MeV) EVTS DOCUMENT ID TECN CHG  COMMENT $\bf{ 1810 {}^{+9}_{-11}}$ OUR AVERAGE  Error includes scale factor of 2.2.  See the ideogram below. $1804$ ${}^{+6}_{-9}$ 46M 1 AGHASYAN 2018 B COMP 190 ${{\mathit \pi}^{-}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit \pi}^{-}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit p}}$ $1876$ $\pm18$ $\pm16$ 4k 2 EUGENIO 2008 B852 - 18 ${{\mathit \pi}^{-}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit \eta}}{{\mathit \eta}}{{\mathit \pi}^{-}}{{\mathit p}}$ $1774$ $\pm18$ $\pm20$ 3 CHUNG 2002 B852 18.3 ${{\mathit \pi}^{-}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit \pi}^{-}}{{\mathit p}}$ $1863$ $\pm9$ $\pm10$ 4 CHUNG 2002 B852 18.3 ${{\mathit \pi}^{-}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit \pi}^{-}}{{\mathit p}}$ $1840$ $\pm10$ $\pm10$ 1.2k AMELIN 1996 B VES - 37 ${{\mathit \pi}^{-}}$ ${{\mathit A}}$ $\rightarrow$ ${{\mathit \eta}}{{\mathit \eta}}{{\mathit \pi}^{-}}{{\mathit A}}$ $1775$ $\pm7$ $\pm10$ 5 AMELIN 1995 B VES - 36 ${{\mathit \pi}^{-}}$ ${{\mathit A}}$ $\rightarrow$ ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit \pi}^{-}}{{\mathit A}}$ $1790$ $\pm14$ 6 BERDNIKOV 1994 VES - 37 ${{\mathit \pi}^{-}}$ ${{\mathit A}}$ $\rightarrow$ ${{\mathit K}^{+}}{{\mathit K}^{-}}{{\mathit \pi}^{-}}{{\mathit A}}$ $1873$ $\pm33$ $\pm20$ BELADIDZE 1992 C VES - 36 ${{\mathit \pi}^{-}}$ ${}^{}\mathrm {Be}$ ${{\mathit \pi}^{-}}$ ${{\mathit \eta}^{\,'}}$ ${{\mathit \eta}}$ ${}^{}\mathrm {Be}$ $1814$ $\pm10$ $\pm23$ 426 BITYUKOV 1991 VES - 36 ${{\mathit \pi}^{-}}$ ${}^{}\mathrm {C}$ $\rightarrow$ ${{\mathit \pi}^{-}}{{\mathit \eta}}{{\mathit \eta}}{}^{}\mathrm {C}$ $1770$ $\pm30$ 1.1k BELLINI 1982 SPEC - 40 ${{\mathit \pi}^{-}}$ ${}^{}\mathrm {A}$ $\rightarrow$ 3 ${{\mathit \pi}}{}^{}\mathrm {A}$ • • We do not use the following data for averages, fits, limits, etc. • • $1785$ $\pm9$ ${}^{+12}_{-6}$ 420k 7 ALEKSEEV 2010 COMP 190 ${{\mathit \pi}^{-}}$ $\rightarrow$ ${{\mathit \pi}^{-}}{{\mathit \pi}^{-}}{{\mathit \pi}^{+}}{{\mathit P}}{{\mathit b}^{\,'}}$ $1737$ $\pm5$ $\pm15$ AMELIN 1999 VES 37 ${{\mathit \pi}^{-}}$ ${{\mathit A}}$ $\rightarrow$ ${{\mathit \omega}}{{\mathit \pi}^{-}}{{\mathit \pi}^{0}}{{\mathit A}^{*}}$ 1  Statistical error negligible. 2  From a single-pole fit. 3  In the ${{\mathit f}_{{{0}}}{(980)}}{{\mathit \pi}}$ wave. 4  In the ${{\mathit f}_{{{0}}}{(500)}}{{\mathit \pi}}$ wave. 5  From a fit to $\mathit J{}^{PC} = 0{}^{-+}{{\mathit f}_{{{0}}}{(980)}}{{\mathit \pi}}$, ${{\mathit f}_{{{0}}}{(1370)}}{{\mathit \pi}}$ waves. 6  From a fit to $\mathit J{}^{PC} = 0{}^{-+}{{\mathit K}_{{{0}}}^{*}{(1430)}}{{\mathit K}^{-}}$ and ${{\mathit f}_{{{0}}}{(980)}}{{\mathit \pi}^{-}}$ waves. 7  Superseded by AGHASYAN 2018B.

${{\mathit \pi}{(1800)}}$ mass (MeV)

References