# ${{\boldsymbol \pi}}{{\boldsymbol \pi}}$ MODE INSPIRE search

VALUE (MeV) EVTS DOCUMENT ID TECN  COMMENT
• • • We do not use the following data for averages, fits, limits, etc. • • •
$1326.35$ $\pm3.46$ 1
 2017
RVUE ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}$
$1342.31$ $\pm46.62$ 2
 2017 A
RVUE ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}$
$1373.83$ $\pm11.37$ 3
 2017 A
RVUE ${{\mathit \tau}^{-}}$ $\rightarrow$ ${{\mathit \pi}^{-}}{{\mathit \pi}^{0}}{{\mathit \nu}_{{\tau}}}$
$1429$ $\pm41$ 20K 4
 2017 C
BABR ${{\mathit J / \psi}}$ $\rightarrow$ ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit \pi}^{0}}$
$1350$ $\pm20$ ${}^{+20}_{-30}$ 63.5k 5
 2012
ZEUS ${{\mathit e}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit e}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit p}}$
$1493$ $\pm15$ 6
 2012 G
BABR ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit \gamma}}$
$1446$ $\pm7$ $\pm28$ 5.4M 7, 8
 2008
BELL ${{\mathit \tau}^{-}}$ $\rightarrow$ ${{\mathit \pi}^{-}}{{\mathit \pi}^{0}}{{\mathit \nu}_{{\tau}}}$
$1328$ $\pm15$ 9
 2005 C
ALEP ${{\mathit \tau}^{-}}$ $\rightarrow$ ${{\mathit \pi}^{-}}{{\mathit \pi}^{0}}{{\mathit \nu}_{{\tau}}}$
$1406$ $\pm15$ 87k 7, 10
 2000 A
CLE2 ${{\mathit \tau}^{-}}$ $\rightarrow$ ${{\mathit \pi}^{-}}{{\mathit \pi}^{0}}{{\mathit \nu}_{{\tau}}}$
$\sim{}\text{ 1368}$ 11
 1999 C
CBAR 0.0 ${{\overline{\mathit p}}}$ ${{\mathit d}}$ $\rightarrow$ ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit \pi}^{-}}{{\mathit p}}$
$1348$ $\pm33$
 1998
OBLX $0.05 - 0.405$ ${{\overline{\mathit n}}}$ ${{\mathit p}}$ $\rightarrow$ 2 ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}$
$1411$ $\pm14$ 12
 1997
CBAR ${{\overline{\mathit p}}}$ ${{\mathit n}}$ $\rightarrow$ ${{\mathit \pi}^{-}}{{\mathit \pi}^{0}}{{\mathit \pi}^{0}}$
$1370$ ${}^{+90}_{-70}$
 1997
RVUE ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}$
$1359$ $\pm40$ 10
 1997 C
OBLX 0.0 ${{\overline{\mathit p}}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit \pi}^{0}}$
$1282$ $\pm37$
 1997 D
OBLX 0.05 ${{\overline{\mathit p}}}$ ${{\mathit p}}$ $\rightarrow$ 2 ${{\mathit \pi}^{+}}$2 ${{\mathit \pi}^{-}}$
$1424$ $\pm25$
 1989
DM2 ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}$
$1265.5$ $\pm75.3$
 1989
RVUE ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}$
$1292$ $\pm17$ 13
 1983
OLYA $0.64 - 1.4$ ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}$
1  Applies the Unitary $\&$ Analytic Model of the pion electromagnetic form factor of DUBNICKA 2010 to analyze the data of LEES 2012G and ABLIKIM 2016C.
2  Applies the Unitary $\&$ Analytic Model of the pion electromagnetic form factor of DUBNICKA 2010 to analyze the data of ACHASOV 2006 , AKHMETSHIN 2007 , AUBERT 2009AS, and AMBROSINO 2011A.
3  Applies the Unitary $\&$ Analytic Model of the pion electromagnetic form factor of DUBNICKA 2010 to analyze the data of FUJIKAWA 2008 .
4  From a Dalitz plot analysis in an isobar model with ${{\mathit \rho}{(1450)}}$ and ${{\mathit \rho}{(1700)}}$ masses and widths floating.
5  Using the KUHN 1990 parametrization of the pion form factor, neglecting ${{\mathit \rho}}−{{\mathit \omega}}$ interference.
6  Using the GOUNARIS 1968 parametrization of the pion form factor leaving the masses and widths of the ${{\mathit \rho}{(1450)}}$, ${{\mathit \rho}{(1700)}}$, and ${{\mathit \rho}{(2150)}}$ resonances as free parameters of the fit.
7  From the GOUNARIS 1968 parametrization of the pion form factor.
8  $\vert \mathit F_{{{\mathit \pi}}}(0)\vert ^2$ fixed to 1.
9  From the combined fit of the ${{\mathit \tau}^{-}}$ data from ANDERSON 2000A and SCHAEL 2005C and ${{\mathit e}^{+}}{{\mathit e}^{-}}$ data from the compilation of BARKOV 1985 , AKHMETSHIN 2004 , and ALOISIO 2005 . ${{\mathit \rho}{(1700)}}$ mass and width fixed at 1713 MeV and 235 MeV, respectively. Supersedes BARATE 1997M.
10  ${{\mathit \rho}{(1700)}}$ mass and width fixed at 1700 MeV and 235 MeV, respectively.
11  ${{\mathit \rho}{(1700)}}$ mass and width fixed at 1780 MeV and 275 MeV respectively.
12  T-matrix pole.
13  Using for ${{\mathit \rho}{(1700)}}$ mass and width $1600$ $\pm20$ and $300$ $\pm10$ MeV respectively.
References:
 BARTOS 2017A
IJMP A32 1750154 The Mass and Width Differences of the Neutral and Charged ${{\mathit \rho}{(770)}}$, ${{\mathit \rho}{(1450 )}}$ and ${{\mathit \rho}{(1700)}}$ Mesons from ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}$ and ${{\mathit \nu}}{{\mathit \tau}}{{\mathit \pi}^{-}}{{\mathit \pi}^{0}}$ Processes
 BARTOS 2017
PR D96 113004 What are the Correct ${{\mathit \rho}{(770)}^{0}}$ Meson Mass and Width Values?
 LEES 2017C
PR D95 072007 Dalitz Plot Analyses of ${{\mathit J / \psi}}$ $\rightarrow$ ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit \pi}^{0}}$ , ${{\mathit J / \psi}}$ $\rightarrow$ ${{\mathit K}^{+}}{{\mathit K}^{-}}{{\mathit \pi}^{0}}$ , and ${{\mathit J / \psi}}$ $\rightarrow$ ${{\mathit K}_S^0}$ ${{\mathit K}^{\pm}}{{\mathit \pi}^{\mp}}$ Produced via ${{\mathit e}^{+}}{{\mathit e}^{-}}$ Annihilation with Initial-State Radiation
 ABRAMOWICZ 2012
EPJ C72 1869 Exclusive Electroproduction of Two Pions at HERA
 LEES 2012G
PR D86 032013 Precise Measurement of the ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}$( ${{\mathit \gamma}}$) Cross Section with the Initial-State Radiation Method at BABAR
 FUJIKAWA 2008
PR D78 072006 High-Statistics Study of the Decay
 SCHAEL 2005C
PRPL 421 191 Branching Ratios and Spectral Functions of ${{\mathit \tau}}$ Decays: Final ALEPH Measurements and Physics Implications
 ANDERSON 2000A
PR D61 112002 Hadronic Structure in the Decay ${{\mathit \tau}^{-}}$ $\rightarrow$ ${{\mathit \pi}^{-}}{{\mathit \pi}^{0}}{{\mathit \nu}_{{\tau}}}$
 ABELE 1999C
PL B450 275 ${{\overline{\mathit p}}}{{\mathit d}}$ Annihilation at Rest into ${{\mathit \pi}^{-}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit p}}_{spect.}$
 BERTIN 1998
PR D57 55 Study of the ${{\mathit f}_{{0}}{(1500)}}/{{\mathit f}_{{2}}{(1565)}}$ Production in the Exclusive Annihilation ${{\overline{\mathit n}}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit \pi}^{+}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}$ in Flight
 ABELE 1997
PL B391 191 High Mass ${{\mathit \rho}}$ Meson States from ${{\overline{\mathit p}}}{{\mathit d}}$ Annihilation at Rest into ${{\mathit \pi}^{-}}{{\mathit \pi}^{0}}{{\mathit \pi}^{0}}{{\mathit p}}_{spect.}$
 ACHASOV 1997
PR D55 2663 ${{\mathit \rho}^{\,'}}$'s in Analyzing ${{\mathit e}^{+}}{{\mathit e}^{-}}$ Annihilation, MARK III, LASS and ARGUS Data
 BERTIN 1997D
PL B414 220 Study of the ${{\overline{\mathit p}}}$ ${{\mathit p}}$ $\rightarrow$ 2 ${{\mathit \pi}^{+}}$2 ${{\mathit \pi}^{-}}$ Annihilation from S States
 BERTIN 1997C
PL B408 476 Spin Parity Analysis of the Final State ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit \pi}^{0}}$ from ${{\overline{\mathit p}}}{{\mathit p}}$ Annihilation at Rest in Hydrogen Targets at Three Densities
 BISELLO 1989
PL B220 321 The Pion Electromagnetic Formfactor in the Time-Like Energy Range 1.35 ${}\leq{}$ $\sqrt {s }{}\leq{}$ 2.4 GeV
 DUBNICKA 1989
JP G15 1349 There is no Discrepancy between Different Pion Formfactor Data Sets
JETPL 37 733 Measurement of the Pion Formfactor at 640 ${}\leq{}$ $\sqrt {s }{}\leq{}$ 1400 MeV