${{\mathit K}_{{2}}^{*}{(1980)}}$ WIDTH

INSPIRE   PDGID:
M104W
VALUE (MeV) EVTS DOCUMENT ID TECN CHG  COMMENT
$\bf{ 348 {}^{+50}_{-30}}$ OUR AVERAGE  Error includes scale factor of 1.3.  See the ideogram below.
$408$ ${}^{+38}_{-34}$ ${}^{+72}_{-44}$ 1.8k 1
ABLIKIM
2020F
 BES3 ${{\mathit \psi}{(2S)}}$ $\rightarrow$ ${{\mathit K}^{+}}{{\mathit K}^{-}}{{\mathit \eta}}$
$272$ $\pm24$ ${}^{+50}_{-15}$ 183k
ABLIKIM
2019AQ
 BES $\pm{}$ ${{\mathit J / \psi}}$ $\rightarrow$ ${{\mathit K}^{+}}{{\mathit K}^{-}}{{\mathit \pi}^{0}}$
$373$ $\pm33$ $\pm60$
ASTON
1987
LASS 0 11 ${{\mathit K}^{-}}$ ${{\mathit p}}$ $\rightarrow$ ${{\overline{\mathit K}}^{0}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit n}}$
• • We do not use the following data for averages, fits, limits, etc. • •
$678$ $\pm311$ ${}^{+1153}_{-559}$ 4289 2, 3
AAIJ
2017C
 LHCB ${{\mathit B}^{+}}$ $\rightarrow$ ${{\mathit J / \psi}}{{\mathit \phi}}{{\mathit K}^{+}}$
$180$ $\pm70$
TIKHOMIROV
2003
SPEC 40.0 ${{\mathit \pi}^{-}}$ ${}^{}\mathrm {C}$ $\rightarrow$ ${{\mathit K}_S^0}$ ${{\mathit K}_S^0}$ ${{\mathit K}_L^0}$ X
$398$ $\pm47$ 241
BIRD
1989
LASS - 11 ${{\mathit K}^{-}}$ ${{\mathit p}}$ $\rightarrow$ ${{\overline{\mathit K}}^{0}}{{\mathit \pi}^{-}}{{\mathit p}}$
1  Seen in ${{\mathit \psi}{(2S)}}$ decay with branching ratio ${{\mathit \psi}{(2S)}}$ $\rightarrow$ ${{\mathit K}^{\pm}}{{\mathit X}}$ $\rightarrow$ ${{\mathit K}^{+}}{{\mathit K}^{-}}{{\mathit \eta}}$ = ($7.0$ $\pm0.5$ ${}^{+3.7}_{-0.6}$) $ \times 10^{-6}$.
2  From an amplitude analysis of the decay ${{\mathit B}^{+}}$ $\rightarrow$ ${{\mathit J / \psi}}{{\mathit \phi}}{{\mathit K}^{+}}$ with a significance of 5.4 $\sigma $.
3  A reanalysis by AAIJ 2021E using a larger data sample did not confirm this measurement, the new result having a significance of only 1.6 $\sigma $.

           ${{\mathit K}_{{2}}^{*}{(1980)}}$ width (MeV)
References:
ABLIKIM 2020F
PR D101 032008 Partial wave analysis of $\psi(3686)\to K^{+}K^{-}\eta$
ABLIKIM 2019AQ
PR D100 032004 Partial-wave analysis of $J/\psi\to K^+K^-\pi^0$
AAIJ 2017C
PRL 118 022003 Observation of ${{\mathit J / \psi}}{{\mathit \phi}}$ Structures Consistent with Exotic States from Amplitude Analysis of ${{\mathit B}^{+}}$ $\rightarrow$ ${{\mathit J / \psi}}{{\mathit \phi}}{{\mathit K}^{+}}$ Decays
Also
PR D95 012002 Amplitude Analysis of ${{\mathit B}^{+}}$ $\rightarrow$ ${{\mathit J / \psi}}{{\mathit \phi}}{{\mathit K}^{+}}$ Decays
TIKHOMIROV 2003
PAN 66 828 Resonances in the ${{\mathit K}_S^0}$ ${{\mathit K}_S^0}$ ${{\mathit K}_L^0}$ System Produced in Collisions of Negative Pions with a Carbon Target at a Momentum of 40 GeV
BIRD 1989
SLAC-332 Cerenkov Ring Imaging and Spectroscopy of Charged ${{\mathit K}^{*}}$ Interactions at 11 ${\mathrm {GeV/}}\mathit c$
ASTON 1987
NP B292 693 The Strange Meson Resonances Observed in the Reaction ${{\mathit K}^{-}}$ ${{\mathit p}}$ $\rightarrow$ ${{\overline{\mathit K}}^{0}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit n}}$ at 11 ${\mathrm {GeV/}}\mathit c$