¹ From a simultaneous fit to the hadronic and ${{\mathit \mu}^{+}}{{\mathit \mu}^{-}}$ cross section, assuming $\Gamma $ = $\Gamma _{{{\mathit h}}}$ $+$ $\Gamma _{{{\mathit e}}}$ $+$ $\Gamma _{{{\mathit \mu}}}$ $+$ $\Gamma _{{{\mathit \tau}}}$ and lepton universality. Does not include vacuum polarization correction.

² The initial-state radiation correction reevaluated by ANDREOTTI 2007 in its Ref. [4].

References:

ABLIKIM

2008B

PL B659 74

Direct Measurements of the Cross Sections for ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ hadrons (non- ${{\mathit D}}{{\overline{\mathit D}}}$ ) in the Range from 3.65 to 3.87 GeV and the Branching Fraction for ${{\mathit \psi}{(3770)}}$ $\rightarrow$ non- ${{\mathit D}}{{\overline{\mathit D}}}$

ANDREOTTI

2007

PL B654 74

Precision Measurements of the Total and Partial Widths of the ${{\mathit \psi}{(2S)}}$ Charmonium Meson with a new Complementary-Scan Technique in ${{\overline{\mathit p}}}{{\mathit p}}$ Source Annihilations

ABLIKIM

2006L

PRL 97 121801

Measurements of the Branching Fractions for ${{\mathit \psi}{(3770)}}$ $\rightarrow$ ${{\mathit D}^{0}}{{\overline{\mathit D}}^{0}}$ , ${{\mathit D}^{+}}{{\mathit D}^{-}}$, ${{\mathit D}}{{\overline{\mathit D}}}$, and the Resonance Parameters of ${{\mathit \psi}{(3770)}}$ and ${{\mathit \psi}{(2S)}}$

BAI

2002B

PL B550 24

A Measurement of ${{\mathit \psi}{(2S)}}$ Resonance Parameters

ARMSTRONG

1993B

PR D47 772

Measurement of the ${{\mathit J / \psi}}$ and ${{\mathit \psi}^{\,'}}$ Resonance Parameters in ${{\overline{\mathit p}}}{{\mathit p}}$ Annihilation

see fit info