#### ${\boldsymbol m}_{{{\boldsymbol D}_{{1}}{(2420)}^{0}}}–{\boldsymbol m}_{{{\boldsymbol D}^{*+}}}$

The fit includes ${{\mathit D}^{\pm}}$, ${{\mathit D}^{0}}$, ${{\mathit D}_{{s}}^{\pm}}$, ${{\mathit D}^{*\pm}}$, ${{\mathit D}^{*0}}$, ${{\mathit D}_{{s}}^{*\pm}}$, ${{\mathit D}_{{1}}{(2420)}^{0}}$, ${{\mathit D}_{{2}}^{*}{(2460)}^{0}}$, and ${{\mathit D}_{{s1}}{(2536)}^{\pm}}$ mass and mass difference measurements.
VALUE (MeV) EVTS DOCUMENT ID TECN  COMMENT
 $\bf{ 411.8 \pm0.6}$ OUR FIT  Error includes scale factor of 1.7.
 $\bf{ 411.5 \pm0.8}$ OUR AVERAGE
$410.2$ $\pm2.1$ $\pm0.9$ 3.1k
 2009
ZEUS ${{\mathit e}^{\pm}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit D}^{*+}}{{\mathit \pi}^{-}}{{\mathit X}}$
$411.7$ $\pm0.7$ $\pm0.4$ 7.5k
 2006 A
CDF 1900 ${{\mathit p}}$ ${{\overline{\mathit p}}}$ $\rightarrow$ ${{\mathit D}^{*+}}{{\mathit \pi}^{-}}{{\mathit X}}$
References:
 CHEKANOV 2009
EPJ C60 25 Production of Excited Charm and Charm-Strange Mesons at HERA
 ABULENCIA 2006A
PR D73 051104 Measurement of Mass and Width of the Excited Charmed Meson States ${{\mathit D}_{{1}}^{0}}$ and ${{\mathit D}_{{2}}^{*0}}$ at CDF