${{\boldsymbol a}_{{2}}{(1320)}}$ WIDTH

3 ${{\boldsymbol \pi}}$ MODE INSPIRE search

VALUE (MeV) EVTS DOCUMENT ID TECN CHG  COMMENT
$\bf{ 105.0 {}^{+1.7}_{-1.9}}$ OUR AVERAGE
$106.6$ ${}^{+3.4}_{-7.0}$ 46M 1
AGHASYAN
2018B
COMP 190 ${{\mathit \pi}^{-}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit \pi}^{-}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit p}}$
$108$ $\pm3$ $\pm15$
CHUNG
2002
B852 18.3 ${{\mathit \pi}^{-}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit \pi}^{-}}{{\mathit p}}$
$120$ $\pm10$
BARBERIS
1998B
450 ${{\mathit p}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit p}_{{f}}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit \pi}^{0}}{{\mathit p}_{{s}}}$
$105$ $\pm10$ $\pm11$
ACCIARRI
1997T
L3 ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit e}^{+}}{{\mathit e}^{-}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit \pi}^{0}}$
$120$ $\pm10$
ALBRECHT
1997B
ARG ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit e}^{+}}{{\mathit e}^{-}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit \pi}^{0}}$
$103.0$ $\pm6.0$ $\pm3.3$ 72.4k
AMELIN
1996
VES 36 ${{\mathit \pi}^{-}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit \pi}^{0}}{{\mathit n}}$
$120$ $\pm10$
ARMSTRONG
1990
OMEG 0 300.0 ${{\mathit p}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit p}}{{\mathit p}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit \pi}^{0}}$
$107.0$ $\pm9.7$ 4022
AUGUSTIN
1989
DM2 +- ${{\mathit J / \psi}}$ $\rightarrow$ ${{\mathit \rho}^{\pm}}{{\mathit a}_{{2}}^{\mp}}$
$118.5$ $\pm12.5$ 3562
AUGUSTIN
1989
DM2 0 ${{\mathit J / \psi}}$ $\rightarrow$ ${{\mathit \rho}^{0}}{{\mathit a}_{{2}}^{0}}$
$97$ $\pm5$ 2
EVANGELISTA
1981
OMEG - 12 ${{\mathit \pi}^{-}}$ ${{\mathit p}}$ $\rightarrow$ 3 ${{\mathit \pi}}{{\mathit p}}$
$96$ $\pm9$ 25k 2
DAUM
1980C
SPEC - 63,94 ${{\mathit \pi}^{-}}$ ${{\mathit p}}$ $\rightarrow$ 3 ${{\mathit \pi}}{{\mathit p}}$
$110$ $\pm15$ 1097 2
BALTAY
1978B
HBC +0 15 ${{\mathit \pi}^{+}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit p}}$4 ${{\mathit \pi}}$
$112$ $\pm18$ 1.6k 2
EMMS
1975
DBC 0 4 ${{\mathit \pi}^{+}}$ ${{\mathit n}}$ $\rightarrow$ ${{\mathit p}}$(3 ${{\mathit \pi}}$) ${}^{0}$
$122$ $\pm14$ 1.2k 2, 3
WAGNER
1975
HBC 0 7 ${{\mathit \pi}^{+}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit \Delta}^{++}}$(3 ${{\mathit \pi}}$) ${}^{0}$
$115$ $\pm15$ 2
ANTIPOV
1973C
CNTR - 25,40 ${{\mathit \pi}^{-}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit p}}{{\mathit \eta}}{{\mathit \pi}^{-}}$
$99$ $\pm15$ 1580
CHALOUPKA
1973
HBC - 3.9 ${{\mathit \pi}^{-}}{{\mathit p}}$
$105$ $\pm5$ 28k
BOWEN
1971
MMS - 5 ${{\mathit \pi}^{-}}{{\mathit p}}$
$99$ $\pm5$ 24k
BOWEN
1971
MMS + 5 ${{\mathit \pi}^{+}}{{\mathit p}}$
$103$ $\pm5$ 17k
BOWEN
1971
MMS - 7 ${{\mathit \pi}^{-}}{{\mathit p}}$
• • • We do not use the following data for averages, fits, limits, etc. • • •
$110$ $\pm2$ ${}^{+2}_{-15}$ 420k 4
ALEKSEEV
2010
COMP 190 ${{\mathit \pi}^{-}}$ $\rightarrow$ ${{\mathit \pi}^{-}}{{\mathit \pi}^{-}}{{\mathit \pi}^{+}}{{\mathit P}}{{\mathit b}^{\,'}}$
$117$ $\pm6$ $\pm20$ 18k 5
SCHEGELSKY
2006
RVUE 0 ${{\mathit \gamma}}$ ${{\mathit \gamma}}$ $\rightarrow$ ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit \pi}^{0}}$
$120$ $\pm40$
CONDO
1993
SHF ${{\mathit \gamma}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit n}}{{\mathit \pi}^{+}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}$
$115$ $\pm14$ 490
BALTAY
1978B
HBC 0 15 ${{\mathit \pi}^{+}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit \Delta}}$3 ${{\mathit \pi}}$
$72$ $\pm16$ 5k
BINNIE
1971
MMS - ${{\mathit \pi}^{-}}{{\mathit p}}$ near ${{\mathit a}_{{2}}}$ threshold
$79$ $\pm12$ 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  Width errors enlarged by us to 4${}\Gamma /\sqrt {\mathit N }$; see the note with the ${{\mathit K}^{*}{(892)}}$ mass.
4  Superseded by AGHASYAN 2018B.
5  From analysis of L3 data at $183 - 209$ GeV.
  References:
AGHASYAN 2018B
PR D98 092003 Light isovector resonances in $\pi^- p \to \pi^-\pi^-\pi^+ p$ at 190 GeV/${\it c}$
ALEKSEEV 2010
PRL 104 241803 Observation of a $\mathit J{}^{PC} = 1-+$ Exotic Resonance in Diffractive Dissociation of 190 GeV/$\mathit c$ ${{\mathit \pi}^{-}}$ into ${{\mathit \pi}^{-}}{{\mathit \pi}^{-}}{{\mathit \pi}^{+}}$
SCHEGELSKY 2006
EPJ A27 199 Partial Wave Analysis of ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit \pi}^{0}}$ Production in Two-Photon Collisions at LEP
CHUNG 2002
PR D65 072001 Exotic and ${\mathit {\mathit q}}{\mathit {\overline{\mathit q}}}$ Resonances in the ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit \pi}^{-}}$ System Produced in ${{\mathit \pi}^{-}}{{\mathit p}}$ Collisions at 18-GeV/$\mathit c$
BARBERIS 1998B
PL B422 399 A Study of the Centrally Produced ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit \pi}^{0}}$ Channel in ${{\mathit p}}{{\mathit p}}$ Interactions at 450 ${\mathrm {GeV/}}\mathit c$
ACCIARRI 1997T
PL B413 147 Resonance Formation in the ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit \pi}^{0}}$ Final State in Two Photon Collisions
ALBRECHT 1997B
ZPHY C74 469 A Partial Wave Analysis of the Reaction ${{\mathit \gamma}}$ ${{\mathit \gamma}}$ $\rightarrow$ ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit \pi}^{0}}$
AMELIN 1996
ZPHY C70 71 Partial Wave Analysis of the Reaction ${{\mathit \pi}^{-}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit \pi}^{0}}{{\mathit n}}$ at p$_{{{\mathit \pi}^{-}}}$ = 36 ${\mathrm {GeV/}}\mathit c$. Study of ${{\mathit a}_{{2}}{(1320)}}$ and ${{\mathit \omega}_{{3}}{(1670)}}$
CONDO 1993
PR D48 3045 Further Results from Charge-Exchange Photoproduction
ARMSTRONG 1990
ZPHY C48 213 A Study of the Centrally Produced ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit \pi}^{0}}$ System Formed in the Reaction ${{\mathit p}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit p}_{{f}}}$( ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit \pi}^{0}}$) ${{\mathit p}_{{s}}}$ at 300 ${\mathrm {GeV/}}\mathit c$
AUGUSTIN 1989
NP B320 1 Study of the ${{\mathit J / \psi}}$ Decay into Five Pions
EVANGELISTA 1981
NP B178 197 Results from a ${{\mathit \pi}^{-}}{{\mathit p}}$ Slow Proton Trigger Experiment at 12 ${\mathrm {GeV/}}\mathit c$
DAUM 1980C
PL 89B 276 ${{\mathit A}_{{2}}}$ Meson Production at 63 and 94 GeV in the Reaction ${{\mathit \pi}^{-}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit \pi}^{-}}{{\mathit \pi}^{-}}{{\mathit \pi}^{+}}{{\mathit p}}$
BALTAY 1978B
PR D17 62 Meson Resonance Production in ${{\mathit \pi}^{+}}{{\mathit p}}$ Interactions at 15 ${\mathrm {GeV/}}\mathit c$
EMMS 1975
PL 58B 117 ${{\mathit A}_{{2}}^{0}}$ Production by Charge Exchange in ${{\mathit \pi}^{+}}{{\mathit n}}$ Interactions at 4 ${\mathrm {GeV/}}\mathit c$
WAGNER 1975
PL 58B 201 Amplitude Analysis for the Reaction ${{\mathit \pi}^{+}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit \pi}^{0}}{{\mathit \Delta}^{++}}$ at 7 ${\mathrm {GeV/}}\mathit c$
ANTIPOV 1973C
NP B63 153 ${{\mathit A}_{{1}}}$, ${{\mathit A}_{{2}}}$, and ${{\mathit A}_{{3}}}$ Production in ${{\mathit \pi}^{-}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit \pi}^{-}}{{\mathit \pi}^{-}}{{\mathit \pi}^{+}}{{\mathit p}}$ at 25 and 40 ${\mathrm {GeV/}}\mathit c$
CHALOUPKA 1973
PL 44B 211 Measurement of the Branching Ratios of the ${{\mathit A}_{{2}}}$ Meson Produced in 3.9 ${\mathrm {GeV/}}\mathit c$ ${{\mathit \pi}^{-}}{{\mathit p}}$ Interactions
BINNIE 1971
PL 36B 257 ${{\mathit A}_{{2}}^{-}}$ Production in the Channel ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit \pi}^{-}}$ near Threshold
BOWEN 1971
PRL 26 1663 Measurements of the ${{\mathit A}_{{2}}^{-}}$ and ${{\mathit A}_{{2}}^{+}}$ Mass Spectra
ALSTON-GARNJOST 1970
PL 33B 607 ${{\mathit A}_{{2}}}$ Mass Spectrum in 7 ${\mathrm {GeV/}}\mathit c$ ${{\mathit \pi}^{+}}{{\mathit p}}$ Interactions