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3 ${{\mathit \pi}}$ MODE

INSPIRE   PDGID:

M012M1

VALUE (MeV) EVTS DOCUMENT ID TECN CHG  COMMENT $\bf{ 1318.6 \pm1.3}$ OUR AVERAGE  Error includes scale factor of 1.4.  See the ideogram below. $1314.5$ ${}^{+4.0}_{-3.3}$ 46M 1 AGHASYAN 2018 B COMP 190 ${{\mathit \pi}^{-}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit \pi}^{-}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit p}}$ $1326$ $\pm2$ $\pm2$ CHUNG 2002 B852 18.3 ${{\mathit \pi}^{-}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit \pi}^{-}}{{\mathit p}}$ $1317$ $\pm3$ BARBERIS 1998 B 450 ${{\mathit p}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit p}_{{{f}}}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit \pi}^{0}}{{\mathit p}_{{{s}}}}$ $1323$ $\pm4$ $\pm3$ ACCIARRI 1997 T L3 ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit e}^{+}}{{\mathit e}^{-}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit \pi}^{0}}$ $1320$ $\pm7$ ALBRECHT 1997 B ARG ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit e}^{+}}{{\mathit e}^{-}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit \pi}^{0}}$ $1311.3$ $\pm1.6$ $\pm3.0$ 72.4k AMELIN 1996 VES 36 ${{\mathit \pi}^{-}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit \pi}^{0}}{{\mathit n}}$ $1310$ $\pm5$ ARMSTRONG 1990 OMEG 0 300.0 ${{\mathit p}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit p}}{{\mathit p}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit \pi}^{0}}$ $1323.8$ $\pm2.3$ 4022 AUGUSTIN 1989 DM2 $\pm{}$ ${{\mathit J / \psi}}$ $\rightarrow$ ${{\mathit \rho}^{\pm}}{{\mathit a}_{{{2}}}^{\mp}}$ $1320.6$ $\pm3.1$ 3562 AUGUSTIN 1989 DM2 0 ${{\mathit J / \psi}}$ $\rightarrow$ ${{\mathit \rho}^{0}}{{\mathit a}_{{{2}}}^{0}}$ $1317$ $\pm2$ 25k 2 DAUM 1980 C SPEC - 63,94 ${{\mathit \pi}^{-}}$ ${{\mathit p}}$ $\rightarrow$ 3 ${{\mathit \pi}}{{\mathit p}}$ $1320$ $\pm10$ 1097 2 BALTAY 1978 B HBC +0 15 ${{\mathit \pi}^{+}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit p}}$4 ${{\mathit \pi}}$ $1306$ $\pm8$ FERRERSORIA 1978 OMEG - 9 ${{\mathit \pi}^{-}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit p}}$3 ${{\mathit \pi}}$ $1318$ $\pm7$ 1.6k 2 EMMS 1975 DBC 0 4 ${{\mathit \pi}^{+}}$ ${{\mathit n}}$ $\rightarrow$ ${{\mathit p}}$(3 ${{\mathit \pi}}$) ${}^{0}$ $1315$ $\pm5$ 2 ANTIPOV 1973 C CNTR - 25,40 ${{\mathit \pi}^{-}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit p}}{{\mathit \eta}}{{\mathit \pi}^{-}}$ $1306$ $\pm9$ 1580 CHALOUPKA 1973 HBC - 3.9 ${{\mathit \pi}^{-}}{{\mathit p}}$ • • We do not use the following data for averages, fits, limits, etc. • • $1321$ $\pm1$ ${}^{+0}_{-7}$ 420k 3 ALEKSEEV 2010 COMP 190 ${{\mathit \pi}^{-}}$ $\rightarrow$ ${{\mathit \pi}^{-}}{{\mathit \pi}^{-}}{{\mathit \pi}^{+}}{{\mathit P}}{{\mathit b}^{\,'}}$ $1300$ $\pm2$ $\pm4$ 18k 4 SCHEGELSKY 2006 RVUE 0 ${{\mathit \gamma}}$ ${{\mathit \gamma}}$ $\rightarrow$ ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit \pi}^{0}}$ $1305$ $\pm14$ CONDO 1993 SHF ${{\mathit \gamma}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit n}}{{\mathit \pi}^{+}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}$ $1310$ $\pm2$ 2 EVANGELISTA 1981 OMEG - 12 ${{\mathit \pi}^{-}}$ ${{\mathit p}}$ $\rightarrow$ 3 ${{\mathit \pi}}{{\mathit p}}$ $1343$ $\pm11$ 490 BALTAY 1978 B HBC 0 15 ${{\mathit \pi}^{+}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit \Delta}}$3 ${{\mathit \pi}}$ $1309$ $\pm5$ 5k BINNIE 1971 MMS - ${{\mathit \pi}^{-}}{{\mathit p}}$ near ${{\mathit a}_{{{2}}}}$ threshold $1299$ $\pm6$ 28k BOWEN 1971 MMS - 5 ${{\mathit \pi}^{-}}{{\mathit p}}$ $1300$ $\pm6$ 24k BOWEN 1971 MMS + 5 ${{\mathit \pi}^{+}}{{\mathit p}}$ $1309$ $\pm4$ 17k BOWEN 1971 MMS - 7 ${{\mathit \pi}^{-}}{{\mathit p}}$ $1306$ $\pm4$ 941 ALSTON-GARNJO.. 1970 HBC + 7.0 ${{\mathit \pi}^{+}}$ ${{\mathit p}}$ $\rightarrow$ 3 ${{\mathit \pi}}{{\mathit p}}$ 1  Statistical error negligible. 2  From a fit to $\mathit J{}^{P} = 2{}^{+}{{\mathit \rho}}{{\mathit \pi}}$ partial wave. 3  Superseded by AGHASYAN 2018B. 4  From analysis of L3 data at $183 - 209$ GeV.

${{\mathit a}_{{{2}}}{(1320)}}$ mass, 3 ${{\mathit \pi}}$ mode (MeV)

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