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

INSPIRE   JSON  (beta) 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
01B
 
COMP 190 ${{\mathit \pi}^{-}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit \pi}^{-}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit p}}$
$1326$ $\pm2$ $\pm2$
CHUNG
00
 
B852 18.3 ${{\mathit \pi}^{-}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit \pi}^{-}}{{\mathit p}}$
$1317$ $\pm3$
BARBERIS
99B
 
450 ${{\mathit p}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit p}_{{{f}}}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit \pi}^{0}}{{\mathit p}_{{{s}}}}$
$1323$ $\pm4$ $\pm3$
ACCIARRI
99T
 
L3 ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit e}^{+}}{{\mathit e}^{-}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit \pi}^{0}}$
$1320$ $\pm7$
ALBRECHT
99B
 
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
99
 
VES 36 ${{\mathit \pi}^{-}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit \pi}^{0}}{{\mathit n}}$
$1310$ $\pm5$
ARMSTRONG
99
 
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
98
 
DM2 $\pm{}$ ${{\mathit J / \psi}}$ $\rightarrow$ ${{\mathit \rho}^{\pm}}{{\mathit a}_{{{2}}}^{\mp}}$
$1320.6$ $\pm3.1$ 3562
AUGUSTIN
98
 
DM2 0 ${{\mathit J / \psi}}$ $\rightarrow$ ${{\mathit \rho}^{0}}{{\mathit a}_{{{2}}}^{0}}$
$1317$ $\pm2$ 25k 2
DAUM
98C
 
SPEC - 63,94 ${{\mathit \pi}^{-}}$ ${{\mathit p}}$ $\rightarrow$ 3 ${{\mathit \pi}}{{\mathit p}}$
$1320$ $\pm10$ 1097 2
BALTAY
97B
 
HBC +0 15 ${{\mathit \pi}^{+}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit p}}$4 ${{\mathit \pi}}$
$1306$ $\pm8$
FERRERSORIA
97
 
OMEG - 9 ${{\mathit \pi}^{-}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit p}}$3 ${{\mathit \pi}}$
$1318$ $\pm7$ 1.6k 2
EMMS
97
 
DBC 0 4 ${{\mathit \pi}^{+}}$ ${{\mathit n}}$ $\rightarrow$ ${{\mathit p}}$(3 ${{\mathit \pi}}$) ${}^{0}$
$1315$ $\pm5$ 2
ANTIPOV
97C
 
CNTR - 25,40 ${{\mathit \pi}^{-}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit p}}{{\mathit \eta}}{{\mathit \pi}^{-}}$
$1306$ $\pm9$ 1580
CHALOUPKA
97
 
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
01
 
COMP 190 ${{\mathit \pi}^{-}}$ $\rightarrow$ ${{\mathit \pi}^{-}}{{\mathit \pi}^{-}}{{\mathit \pi}^{+}}{{\mathit P}}{{\mathit b}^{\,'}}$
$1300$ $\pm2$ $\pm4$ 18k 4
SCHEGELSKY
00
 
RVUE 0 ${{\mathit \gamma}}$ ${{\mathit \gamma}}$ $\rightarrow$ ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit \pi}^{0}}$
$1305$ $\pm14$
CONDO
99
 
SHF ${{\mathit \gamma}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit n}}{{\mathit \pi}^{+}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}$
$1310$ $\pm2$ 2
EVANGELISTA
98
 
OMEG - 12 ${{\mathit \pi}^{-}}$ ${{\mathit p}}$ $\rightarrow$ 3 ${{\mathit \pi}}{{\mathit p}}$
$1343$ $\pm11$ 490
BALTAY
97B
 
HBC 0 15 ${{\mathit \pi}^{+}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit \Delta}}$3 ${{\mathit \pi}}$
$1309$ $\pm5$ 5k
BINNIE
97
 
MMS - ${{\mathit \pi}^{-}}{{\mathit p}}$ near ${{\mathit a}_{{{2}}}}$ threshold
$1299$ $\pm6$ 28k
BOWEN
97
 
MMS - 5 ${{\mathit \pi}^{-}}{{\mathit p}}$
$1300$ $\pm6$ 24k
BOWEN
97
 
MMS + 5 ${{\mathit \pi}^{+}}{{\mathit p}}$
$1309$ $\pm4$ 17k
BOWEN
97
 
MMS - 7 ${{\mathit \pi}^{-}}{{\mathit p}}$
$1306$ $\pm4$ 941
ALSTON-GARNJO..
97
 
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)
References