pdgLive

${{\mathit \chi}_{{{c1}}}{(1P)}}$ WIDTH

INSPIRE JSON (beta) PDGID:

VALUE (MeV)

CL%

EVTS

DOCUMENT ID

TECN

COMMENT

$\bf{ 0.84 \pm0.04}$

OUR FIT Error includes scale factor of 1.1.

$\bf{ 0.88 \pm0.05}$

OUR AVERAGE

$1.39$ ${}^{+0.40}_{-0.38}$ ${}^{+0.26}_{-0.77}$

BES2

${{\mathit \psi}{(2S)}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit \chi}_{{{c1}}}}$

$0.876$ $\pm0.045$ $\pm0.026$

E835

${{\mathit p}}$ ${{\overline{\mathit p}}}$ $\rightarrow$ ${{\mathit e}^{+}}{{\mathit e}^{-}}{{\mathit \gamma}}$

$0.87$ $\pm0.11$ $\pm0.08$

513

E760

${{\overline{\mathit p}}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit e}^{+}}{{\mathit e}^{-}}{{\mathit \gamma}}$

• • We do not use the following data for averages, fits, limits, etc. • •

$<1.3$

95

SPEC

${{\overline{\mathit p}}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit e}^{+}}{{\mathit e}^{-}}$ X

$<3.8$

90

CBAL

${{\mathit \psi}{(2S)}}$ $\rightarrow$ ${{\mathit \gamma}}$ X

¹	Recalculated by ANDREOTTI 2005A.

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