${{\boldsymbol \pi}_{{2}}{(1670)}}$ WIDTH INSPIRE search

VALUE (MeV) EVTS DOCUMENT ID TECN CHG  COMMENT
$\bf{ 258 {}^{+8}_{-9}}$ OUR AVERAGE  Error includes scale factor of 1.2.
$311$ ${}^{+12}_{-23}$ 46M 1
AGHASYAN
2018B
COMP 190 ${{\mathit \pi}^{-}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit \pi}^{-}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit p}}$
$408$ $\pm60$ $\pm250$ 145k
LU
2005
B852 18 ${{\mathit \pi}^{-}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit \omega}}{{\mathit \pi}^{-}}{{\mathit \pi}^{0}}{{\mathit p}}$
$254$ $\pm3$ $\pm31$ 2
CHUNG
2002
B852 18.3 ${{\mathit \pi}^{-}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit \pi}^{-}}{{\mathit p}}$
$265$ $\pm30$ $\pm40$
BARBERIS
2001
450 ${{\mathit p}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit p}_{{f}}}$3 ${{\mathit \pi}^{0}}{{\mathit p}_{{s}}}$
$168$ $\pm43$ $\pm53$
AMELIN
1999
VES 37 ${{\mathit \pi}^{-}}$ ${{\mathit A}}$ $\rightarrow$ ${{\mathit \omega}}{{\mathit \pi}^{-}}{{\mathit \pi}^{0}}{{\mathit A}^{*}}$
$268$ $\pm15$
BARBERIS
1998B
450 ${{\mathit p}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit p}_{{f}}}{{\mathit \rho}}$ ${{\mathit \pi}}{{\mathit p}_{{s}}}$
$256$ $\pm15$
BARBERIS
1998B
450 ${{\mathit p}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit p}_{{f}}}{{\mathit f}_{{2}}{(1270)}}{{\mathit \pi}}$ ${{\mathit p}_{{s}}}$
$190$ $\pm50$ 3
BERDNIKOV
1994
VES 37 ${{\mathit \pi}^{-}}$ ${{\mathit A}}$ $\rightarrow$ ${{\mathit K}^{+}}{{\mathit K}^{-}}{{\mathit \pi}^{-}}{{\mathit A}}$
$170$ $\pm80$ 700
ANTIPOV
1987
SIGM - 50 ${{\mathit \pi}^{-}}$ ${}^{}\mathrm {Cu}$ $\rightarrow$ ${{\mathit \mu}^{+}}{{\mathit \mu}^{-}}{{\mathit \pi}^{-}}{}^{}\mathrm {Cu}$
$260$ $\pm20$ 3
EVANGELISTA
1981
OMEG - 12 ${{\mathit \pi}^{-}}$ ${{\mathit p}}$ $\rightarrow$ 3 ${{\mathit \pi}}{{\mathit p}}$
$219$ $\pm20$ 4, 3
DAUM
1980D
SPEC - 63$-$94 ${{\mathit \pi}}$ ${{\mathit p}}$ $\rightarrow$ 3 ${{\mathit \pi}}$ X
$285$ $\pm60$ 2000 3
BALTAY
1977
HBC + 15 ${{\mathit \pi}^{+}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit p}}$3 ${{\mathit \pi}}$
• • • We do not use the following data for averages, fits, limits, etc. • • •
$271$ $\pm9$ ${}^{+22}_{-24}$ 420k 5
ALEKSEEV
2010
COMP 190 ${{\mathit \pi}^{-}}$ $\rightarrow$ ${{\mathit \pi}^{-}}{{\mathit \pi}^{-}}{{\mathit \pi}^{+}}{{\mathit P}}{{\mathit b}^{\,'}}$
$310$ $\pm20$ 6
AMELIN
1995B
VES 36 ${{\mathit \pi}^{-}}$ ${{\mathit A}}$ $\rightarrow$ ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit \pi}^{-}}{{\mathit A}}$
$236$ $\pm49$ $\pm36$
ANTREASYAN
1990
CBAL ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit e}^{+}}{{\mathit e}^{-}}{{\mathit \pi}^{0}}{{\mathit \pi}^{0}}{{\mathit \pi}^{0}}$
$304$ $\pm22$ 2
BELLINI
1985
SPEC 40 ${{\mathit \pi}^{-}}$ ${{\mathit A}}$ $\rightarrow$ ${{\mathit \pi}^{-}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit A}}$
$404$ $\pm108$ 7
BELLINI
1985
SPEC 40 ${{\mathit \pi}^{-}}$ ${{\mathit A}}$ $\rightarrow$ ${{\mathit \pi}^{-}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit A}}$
$330$ $\pm90$ 8
BELLINI
1985
SPEC 40 ${{\mathit \pi}^{-}}$ ${{\mathit A}}$ $\rightarrow$ ${{\mathit \pi}^{-}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit A}}$
$312$ $\pm50$ 9
DAUM
1981B
SPEC - 63,94 ${{\mathit \pi}^{-}}{{\mathit p}}$
$270$ $\pm60$ 3
ASCOLI
1973
HBC - 5$-$25 ${{\mathit \pi}^{-}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit p}}{{\mathit \pi}_{{2}}}$
1  Statistical error negligible.
2  From ${{\mathit f}_{{2}}{(1270)}}{{\mathit \pi}}$ decay.
3  From a fit to $\mathit J{}^{P} = 2{}^{-}$ ${{\mathit f}_{{2}}{(1270)}}{{\mathit \pi}}$ partial wave.
4  Clear phase rotation seen in 2${}^{–}\mathit S$, 2${}^{–}\mathit P$, 2${}^{–}\mathit D$ waves. We quote central value and spread of single-resonance fits to three channels.
5  Superseded by AGHASYAN 2018B.
6  $J^{PC}$ ambiguous.
7  From ${{\mathit \rho}}{{\mathit \pi}}$ decay.
8  From ${{\mathit \sigma}}{{\mathit \pi}}$ decay.
9  From a two-resonance fit to four 2${}^{–}0{}^{+}$ waves. This should not be averaged with all the single resonance fits.
  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 ${{\mathit \pi}^{-}}{{\mathit \pi}^{-}}{{\mathit \pi}^{+}}$
LU 2005
PRL 94 032002 Exotic Meson Decay to ${{\mathit \omega}}{{\mathit \pi}^{0}}{{\mathit \pi}^{-}}$
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 2001
PL B507 14 A Study of the Centrally Produced ${{\mathit \pi}^{0}}{{\mathit \pi}^{0}}{{\mathit \pi}^{0}}$ Channel in ${{\mathit p}}{{\mathit p}}$ Interactions at 450 ${\mathrm {GeV/}}\mathit c$
AMELIN 1999
PAN 62 445 Investigation of the Reaction ${{\mathit \pi}^{-}}$ ${+}$ ${{\mathit A}}$ $\rightarrow$ ${{\mathit \omega}}{{\mathit \pi}^{-}}{{\mathit \pi}^{0}}{+}$ ${{\mathit A}}$
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 ${\mathrm {GeV/}}\mathit c$
AMELIN 1995B
PL B356 595 Study of Resonance Production in Diffractive Reaction ${{\mathit \pi}^{-}}$ ${{\mathit A}}$ $\rightarrow$ ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit \pi}^{-}}{{\mathit A}}$
BERDNIKOV 1994
PL B337 219 Study of the Reaction ${{\mathit \pi}^{-}}$ ${{\mathit A}}$ $\rightarrow$ ${{\mathit K}^{+}}{{\mathit K}^{-}}{{\mathit \pi}^{-}}{{\mathit A}}$ at 37 ${\mathrm {GeV/}}\mathit c$
ANTREASYAN 1990
ZPHY C48 561 First Observation of the Reaction ${{\mathit \gamma}}$ ${{\mathit \gamma}}$ $\rightarrow$ ${{\mathit \pi}_{{2}}{(1670)}}$ $\rightarrow$ 3 ${{\mathit \pi}^{0}}$
ANTIPOV 1987
EPL 4 403 Direct Observation of ${{\mathit \pi}_{{2}}{(1670)}}$ in the ${{\mathit \rho}}{{\mathit \pi}^{-}}$ System
BELLINI 1985
SJNP 41 781 $2{}^{-}{}^{}$ Resonances in the ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit \pi}^{-}}$ Systems
DAUM 1981B
NP B182 269 Diffractive Production of 3${{\mathit \pi}}$ States at 63 and 94 GeV
EVANGELISTA 1981
NP B178 197 Results from a ${{\mathit \pi}^{-}}{{\mathit p}}$ Slow Proton Trigger Experiment at 12 ${\mathrm {GeV/}}\mathit c$
DAUM 1980D
PL 89B 285 3${{\mathit \pi}}$ Resonances in $2{}^{-}{}^{}$ Partial Waves
BALTAY 1977
PRL 39 591 Diffractive and Nondiffractive ${{\mathit A}_{{1}}}$, ${{\mathit A}_{{3}}}$ and ${{\mathit A}_{{4}}}$ Production in ${{\mathit \pi}^{+}}{{\mathit p}}$ Interactions at 15 ${\mathrm {GeV/}}\mathit c$
ASCOLI 1973
PR D7 669 Spin Parity Analysis of the ${{\mathit A}_{{3}}}$