${{\mathit f}_{{{0}}}{(500)}}$ BREIT-WIGNER WIDTH

INSPIRE   PDGID:
M014W
VALUE (MeV) DOCUMENT ID TECN  COMMENT
$\bf{ 100\text{ to }800 }$ OUR ESTIMATE
• • We do not use the following data for averages, fits, limits, etc. • •
$335$ $\pm67$ 1
MURAMATSU
2002
CLEO ${{\mathit e}^{+}}{{\mathit e}^{-}}$ $\approx{}$ 10 GeV
$324$ ${}^{+42}_{-40}$ $\pm21$
AITALA
2001B
 E791 ${{\mathit D}^{+}}$ $\rightarrow$ ${{\mathit \pi}^{-}}{{\mathit \pi}^{+}}{{\mathit \pi}^{+}}$
$372$ ${}^{+229}_{-95}$ 2
ISHIDA
2001
${{\mathit \Upsilon}{(3S)}}$ $\rightarrow$ ${{\mathit \Upsilon}}{{\mathit \pi}}{{\mathit \pi}}$
$540$ 3
ASNER
2000
CLE2 ${{\mathit \tau}^{-}}$ $\rightarrow$ ${{\mathit \pi}^{-}}{{\mathit \pi}^{0}}{{\mathit \pi}^{0}}{{\mathit \nu}_{{{\tau}}}}$
$372$ $\pm80$
ISHIDA
2000B
 ${{\mathit p}}$ ${{\overline{\mathit p}}}$ $\rightarrow$ ${{\mathit \pi}^{0}}{{\mathit \pi}^{0}}{{\mathit \pi}^{0}}$
$119$ $\pm13$
ALEKSEEV
1999
SPEC 1.78 ${{\mathit \pi}^{-}}{{\mathit p}}_{{\mathrm {polar}}}$ $\rightarrow$ ${{\mathit \pi}^{-}}{{\mathit \pi}^{+}}{{\mathit n}}$
$77$ $\pm22$
ALEKSEEV
1998
SPEC 1.78 ${{\mathit \pi}^{-}}{{\mathit p}}_{{\mathrm {polar}}}$ $\rightarrow$ ${{\mathit \pi}^{-}}{{\mathit \pi}^{+}}{{\mathit n}}$
$35$ $\pm12$ 4
TROYAN
1998
$5.2$ ${{\mathit n}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit n}}{{\mathit p}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}$
$780$ $\pm60$
ALDE
1997
GAM2 450 ${{\mathit p}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit p}}{{\mathit p}}{{\mathit \pi}^{0}}{{\mathit \pi}^{0}}$
$385$ $\pm70$ 5
ISHIDA
1997
${{\mathit \pi}}$ ${{\mathit \pi}}$ $\rightarrow$ ${{\mathit \pi}}{{\mathit \pi}}$
$290$ $\pm54$ 6
SVEC
1996
RVUE $6 - 17$ ${{\mathit \pi}}$ ${{\mathit N}}$ $_{{\mathrm {polar}}}$ $\rightarrow$ ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit N}}$
$\sim$$880$ 7, 8
TORNQVIST
1996
RVUE ${{\mathit \pi}}$ ${{\mathit \pi}}$ $\rightarrow$ ${{\mathit \pi}}{{\mathit \pi}}$, ${{\mathit K}}{{\overline{\mathit K}}}$, ${{\mathit K}}{{\mathit \pi}}$, ${{\mathit \eta}}{{\mathit \pi}}$
$460$ $\pm40$ 9, 10
ANISOVICH
1995
RVUE ${{\mathit \pi}^{-}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit \pi}^{0}}{{\mathit \pi}^{0}}{{\mathit n}}$, ${{\overline{\mathit p}}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit \pi}^{0}}{{\mathit \pi}^{0}}{{\mathit \pi}^{0}}$, ${{\mathit \pi}^{0}}{{\mathit \pi}^{0}}{{\mathit \eta}}$, ${{\mathit \pi}^{0}}{{\mathit \eta}}{{\mathit \eta}}$
$494$ $\pm58$ 6
AUGUSTIN
1989
DM2
1  Statistical uncertainty only.
2  A similar analysis (KOMADA 2001) finds $301$ ${}^{+145}_{-100}$ MeV.
3  From the best fit of the Dalitz plot.
4  6$\sigma $ effect, no PWA.
5  Reanalysis of data from HYAMS 1973, GRAYER 1974, SRINIVASAN 1975, and ROSSELET 1977 using the interfering amplitude method.
6  Breit-Wigner fit to S-wave intensity measured in ${{\mathit \pi}}$ ${{\mathit N}}$ $\rightarrow$ ${{\mathit \pi}^{-}}{{\mathit \pi}^{+}}{{\mathit N}}$ on polarized targets. The fit does not include ${{\mathit f}_{{{0}}}{(980)}}$.
7  Uses data from ASTON 1988, OCHS 1973, HYAMS 1973, ARMSTRONG 1991B, GRAYER 1974, CASON 1983, ROSSELET 1977, and BEIER 1972B. Coupled channel analysis with flavor symmetry and all light two-pseudoscalars systems.
8  Also observed by ASNER 2000 in ${{\mathit \tau}^{-}}$ $\rightarrow$ ${{\mathit \pi}^{-}}{{\mathit \pi}^{0}}{{\mathit \pi}^{0}}{{\mathit \nu}_{{{\tau}}}}$ decays.
9  Uses ${{\mathit \pi}^{0}}{{\mathit \pi}^{0}}$ data from ANISOVICH 1994, AMSLER 1994D, and ALDE 1995B, ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}$ data from OCHS 1973, GRAYER 1974 and ROSSELET 1977, and ${{\mathit \eta}}{{\mathit \eta}}$ data from ANISOVICH 1994.
10  The pole is on Sheet III. Demonstrates explicitly that ${{\mathit f}_{{{0}}}{(500)}}$ and ${{\mathit f}_{{{0}}}{(1370)}}$ are two different poles.
References