${{\boldsymbol a}_{{2}}{(1700)}}$ MASS INSPIRE search

VALUE (MeV) EVTS DOCUMENT ID TECN  COMMENT
$\bf{ 1705 \pm40}$ OUR AVERAGE
$1722$ $\pm15$ $\pm67$ 1
RODAS
2019
JPAC 191 ${{\mathit \pi}^{-}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit \eta}^{(')}}{{\mathit \pi}^{-}}{{\mathit p}}$
$1698$ $\pm44$ 2
AMSLER
2002
CBAR $0.9$ ${{\overline{\mathit p}}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit \pi}^{0}}{{\mathit \eta}}{{\mathit \eta}}$
• • • We do not use the following data for averages, fits, limits, etc. • • •
$1681$ ${}^{+22}_{-35}$ 46M 3, 4
AGHASYAN
2018B
COMP 190 ${{\mathit \pi}^{-}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit \pi}^{-}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit p}}$
$1720$ $\pm10$ $\pm60$ 5
JACKURA
2018
JPAC ${{\mathit \pi}^{-}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit \eta}}{{\mathit \pi}^{-}}{{\mathit p}}$
$1726$ $\pm12$ $\pm25$ 4
ABLIKIM
2017K
BES3 ${{\mathit \psi}{(2S)}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit \eta}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}$
$1675$ $\pm25$
ANISOVICH
2009
RVUE 0.0 ${{\overline{\mathit p}}}{{\mathit p}}$ , ${{\mathit \pi}}{{\mathit N}}$
$1722$ $\pm9$ $\pm15$ 18k 6
SCHEGELSKY
2006
RVUE ${{\mathit \gamma}}$ ${{\mathit \gamma}}$ $\rightarrow$ ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit \pi}^{0}}$
$1702$ $\pm7$ 80k 7
UMAN
2006
E835 5.2 ${{\overline{\mathit p}}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit \eta}}{{\mathit \eta}}{{\mathit \pi}^{0}}$
$1721$ $\pm13$ $\pm44$ 145k
LU
2005
B852 18 ${{\mathit \pi}^{-}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit \omega}}{{\mathit \pi}^{-}}{{\mathit \pi}^{0}}{{\mathit p}}$
$1737$ $\pm5$ $\pm7$
ABE
2004
BELL 10.6 ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit e}^{+}}{{\mathit e}^{-}}{{\mathit K}^{+}}{{\mathit K}^{-}}$
$1767$ $\pm14$ 221 8
ACCIARRI
2001H
L3 ${{\mathit \gamma}}$ ${{\mathit \gamma}}$ $\rightarrow$ ${{\mathit K}_S^0}$ ${{\mathit K}_S^0}$ , ${\it{}E}^{\it{}ee}_{\rm{}cm}$= 91, $183 - 209$ GeV
$1660$ $\pm40$ 4
ABELE
1999B
CBAR $1.94$ ${{\overline{\mathit p}}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit \pi}^{0}}{{\mathit \eta}}{{\mathit \eta}}$
$\sim$$1775$ 9
GRYGOREV
1999
SPEC 40 ${{\mathit \pi}^{-}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit K}_S^0}$ ${{\mathit K}_S^0}$ ${{\mathit n}}$
$1752$ $\pm21$ $\pm4$
ACCIARRI
1997T
L3 ${{\mathit \gamma}}$ ${{\mathit \gamma}}$ $\rightarrow$ ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit \pi}^{0}}$
1  The coupled-channel analysis of both the ${{\mathit \eta}}{{\mathit \pi}}$ and ${{\mathit \eta}^{\,'}}{{\mathit \pi}}$ systems using ADOLPH 2015 data. The mass is extracted from the T-matrix pole.
2  T-matrix pole.
3  Statistical error negligible.
4  Breit-Wigner mass.
5  Superseded by RODAS 2019 .
6  From analysis of L3 data at $183 - 209$ GeV.
7  Statistical error only.
8  Spin 2 dominant, isospin not determined, could also be $\mathit I$=1.
9  Possibly two $\mathit J{}^{P} = 2{}^{+}$ resonances with isospins 0 and 1.
  References:
RODAS 2019
PRL 122 042002 Determination of the pole position of the lightest hybrid meson candidate
AGHASYAN 2018B
PR D98 092003 Light isovector resonances in $\pi^- p \to \pi^-\pi^-\pi^+ p$ at 190 GeV/${\it c}$
JACKURA 2018
PL B779 464 New analysis of $\eta\pi$ tensor resonances measured at the COMPASS experiment
ABLIKIM 2017K
PR D95 032002 Amplitude Analysis of the ${{\mathit \chi}_{{c1}}}$ $\rightarrow$ ${{\mathit \eta}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}$ Decays
ANISOVICH 2009
IJMP A24 2481 The Combined Analysis of ${{\mathit \pi}}$ ${{\mathit N}}$ $\rightarrow$ two mesons ${+}$ ${{\mathit N}}$ Reactions within Reggeon Exchanges and Data for ${{\mathit p}}$ ${{\overline{\mathit p}}}$ (at rest) $\rightarrow$ three mesons
SCHEGELSKY 2006
EPJ A27 199 Partial Wave Analysis of ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit \pi}^{0}}$ Production in Two-Photon Collisions at LEP
UMAN 2006
PR D73 052009 Light Quark Resonances in ${{\overline{\mathit p}}}{{\mathit p}}$ Annihilations at 5.2 GeV/$\mathit c$
LU 2005
PRL 94 032002 Exotic Meson Decay to ${{\mathit \omega}}{{\mathit \pi}^{0}}{{\mathit \pi}^{-}}$
ABE 2004
EPJ C32 323 Measurement of ${{\mathit K}^{+}}{{\mathit K}^{-}}$ Production in Two Photon Collisions in the Resonant Mass Region
AMSLER 2002
EPJ C23 29 Proton-Antiproton Annihilation at 900 ${\mathrm {MeV}}/\mathit c$ into ${{\mathit \pi}^{0}}{{\mathit \pi}^{0}}{{\mathit \pi}^{0}}$, ${{\mathit \pi}^{0}}{{\mathit \pi}^{0}}{{\mathit \eta}}$, and ${{\mathit \pi}^{0}}{{\mathit \eta}}{{\mathit \eta}}$
ACCIARRI 2001H
PL B501 173 ${{\mathit K}_S^0}{{\mathit K}_S^0}$ Final State in Two Photon Collisions and Implications for Glueballs
ABELE 1999B
EPJ C8 67 Observation of Resonances in the Reaction ${{\overline{\mathit p}}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit \pi}^{0}}{{\mathit \eta}}{{\mathit \eta}}$ at 1.94 ${\mathrm {GeV/}}\mathit c{}^{2}$
GRYGOREV 1999
PAN 62 470 Investigation of a Resonance Structure in the System of Two ${{\mathit K}_S^0}$ Mesons in the Mass Region Around 1775 MeV
ACCIARRI 1997T
PL B413 147 Resonance Formation in the ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit \pi}^{0}}$ Final State in Two Photon Collisions