${{\mathit \rho}{(770)}}$ WIDTH

We no longer list ${\mathit S}{\mathrm -wave}$ Breit-Wigner fits, or data with high combinatorial background.

CHARGED ONLY, HADROPRODUCED

INSPIRE   PDGID:
M009W2
VALUE (MeV) EVTS DOCUMENT ID TECN CHG  COMMENT
$\bf{ 150.2 \pm2.4}$ OUR FIT
$\bf{ 150.2 \pm2.4}$ OUR AVERAGE
$152.8$ $\pm4.3$
ABELE
1997
CBAR ${{\overline{\mathit p}}}$ ${{\mathit n}}$ $\rightarrow$ ${{\mathit \pi}^{-}}{{\mathit \pi}^{0}}{{\mathit \pi}^{0}}$
$155$ $\pm11$ 2.9k 1
CAPRARO
1987
SPEC - 200 ${{\mathit \pi}^{-}}$ ${}^{}\mathrm {Cu}$ $\rightarrow$ ${{\mathit \pi}^{-}}{{\mathit \pi}^{0}}{}^{}\mathrm {Cu}$
$154$ $\pm20$ 967 1
CAPRARO
1987
SPEC - 200 ${{\mathit \pi}^{-}}$ ${}^{}\mathrm {Pb}$ $\rightarrow$ ${{\mathit \pi}^{-}}{{\mathit \pi}^{0}}{}^{}\mathrm {Pb}$
$150$ $\pm5$
HUSTON
1986
SPEC + 202 ${{\mathit \pi}^{+}}$ ${}^{}\mathrm {A}$ $\rightarrow$ ${{\mathit \pi}^{+}}{{\mathit \pi}^{0}}{}^{}\mathrm {A}$
$146$ $\pm12$ 6.5k 2
BYERLY
1973
OSPK - 5 ${{\mathit \pi}^{-}}{{\mathit p}}$
$148.2$ $\pm4.1$ 9.6k 3
PISUT
1968
RVUE - 1.7$-$3.2 ${{\mathit \pi}^{-}}{{\mathit p}}$, $\mathit t$ $<$10
$146$ $\pm13$ 900
EISNER
1967
HBC - 4.2 ${{\mathit \pi}^{-}}{{\mathit p}}$, $\mathit t$ $<$10
• • We do not use the following data for averages, fits, limits, etc. • •
$137.0$ $\pm0.4$ 4
ABLIKIM
2017
BES3 ${{\mathit J / \psi}}$ $\rightarrow$ ${{\mathit \gamma}}$3 ${{\mathit \pi}}$
1  Width errors enlarged by us to 4${}\Gamma /\sqrt {\mathit N }$; see the note with the ${{\mathit K}^{*}{(892)}}$ mass.
2  Phase shift analysis. Systematic errors added corresponding to spread of different fits.
3  From fit of 3-parameter relativistic ${\mathit P}{\mathrm -wave}$ Breit-Wigner to total mass distribution. Includes BATON 1968, MILLER 1967B, ALFF-STEINBERGER 1966, HAGOPIAN 1966, HAGOPIAN 1966B, JACOBS 1966B, JAMES 1966, WEST 1966, BLIEDEN 1965 and CARMONY 1964.
4  S-matrix pole at a fixed ${{\mathit \rho}}$ meson mass of 775.49 MeV.
References
see fit info