${{\mathit D}_{{1}}{(2420)}}$ MASS

INSPIRE  
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 CHG  COMMENT
$\bf{ 2422.1 \pm0.6}$ OUR FIT  Error includes scale factor of 1.7.
$\bf{ 2422.1 \pm0.8}$ OUR AVERAGE  Error includes scale factor of 2.1.  See the ideogram below.
$2424.8$ $\pm0.1$ $\pm0.7$ 79k 1
AAIJ
2020D
LHCB 0 ${{\mathit B}^{-}}$ $\rightarrow$ ${{\mathit D}^{*+}}{{\mathit \pi}^{-}}{{\mathit \pi}^{-}}$
$2427.2$ $\pm1.0$ $\pm1.2$ 4207
ABLIKIM
2020P
BES3 + ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit D}^{+}}{{\mathit D}^{-}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}$
$2419.6$ $\pm0.1$ $\pm0.7$ 210k
AAIJ
2013CC
LHCB 0 ${{\mathit p}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit D}^{*+}}{{\mathit \pi}^{-}}{{\mathit X}}$
$2423.1$ $\pm1.5$ ${}^{+0.4}_{-1.0}$ 2.7k 2
ABRAMOWICZ
2013
ZEUS 0 ${{\mathit e}^{\pm}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit D}^{(*)+}}{{\mathit \pi}^{-}}{{\mathit X}}$
$2421.9$ $\pm4.7$ ${}^{+3.4}_{-1.2}$ 759 3
ABRAMOWICZ
2013
ZEUS + ${{\mathit e}^{\pm}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit D}^{(*)0}}{{\mathit \pi}^{+}}{{\mathit X}}$
$2420.1$ $\pm0.1$ $\pm0.8$ 103k
DEL-AMO-SANCH..
2010P
BABR 0 ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit D}^{*+}}{{\mathit \pi}^{-}}{{\mathit X}}$
$2426$ $\pm3$ $\pm1$ 151
ABE
2005A
BELL 0 ${{\mathit B}^{-}}$ $\rightarrow$ ${{\mathit D}^{0}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit \pi}^{-}}$
$2421$ $\pm2$ $\pm1$ 124
ABE
2005A
BELL + ${{\overline{\mathit B}}^{0}}$ $\rightarrow$ ${{\mathit D}^{+}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit \pi}^{-}}$
$2421.4$ $\pm1.5$ $\pm0.9$ 4
ABE
2004D
BELL 0 ${{\mathit B}^{-}}$ $\rightarrow$ ${{\mathit D}^{*+}}{{\mathit \pi}^{-}}{{\mathit \pi}^{-}}$
$2421$ ${}^{+1}_{-2}$ $\pm2$ 286
AVERY
1994C
CLE2 0 ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit D}^{*+}}{{\mathit \pi}^{-}}$ X
$2425$ $\pm2$ $\pm2$ 146
BERGFELD
1994B
CLE2 + ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit D}^{*0}}{{\mathit \pi}^{+}}$ X
$2422$ $\pm2$ $\pm2$ 51
FRABETTI
1994B
E687 0 ${{\mathit \gamma}}$ ${}^{}\mathrm {Be}$ $\rightarrow$ ${{\mathit D}^{*+}}{{\mathit \pi}^{-}}$ X
$2428$ $\pm3$ $\pm2$ 279
AVERY
1990
CLEO 0 ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit D}^{*+}}{{\mathit \pi}^{-}}$ X
$2414$ $\pm2$ $\pm5$ 171
ALBRECHT
1989H
ARG 0 ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit D}^{*+}}{{\mathit \pi}^{-}}$ X
$2428$ $\pm8$ $\pm5$ 171
ANJOS
1989C
TPS 0 ${{\mathit \gamma}}$ ${{\mathit N}}$ $\rightarrow$ ${{\mathit D}^{*+}}{{\mathit \pi}^{-}}$ X
$2443$ $\pm7$ $\pm5$ 190
ANJOS
1989C
TPS + ${{\mathit \gamma}}$ ${{\mathit N}}$ $\rightarrow$ ${{\mathit D}^{0}}{{\mathit \pi}^{+}}{{\mathit X}^{0}}$
• • We do not use the following data for averages, fits, limits, etc. • •
$2420.5$ $\pm2.1$ $\pm0.9$ 3.1k 5
CHEKANOV
2009
ZEUS 0 ${{\mathit e}^{\pm}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit D}^{*+}}{{\mathit \pi}^{-}}{{\mathit X}}$
$2421.7$ $\pm0.7$ $\pm0.6$ 7.5k
ABULENCIA
2006A
CDF 0 1900 ${{\mathit p}}$ ${{\overline{\mathit p}}}$ $\rightarrow$ ${{\mathit D}^{*+}}{{\mathit \pi}^{-}}{{\mathit X}}$
$2425$ $\pm3$ 235 6
ABREU
1998M
DLPH 0 ${{\mathit e}^{+}}{{\mathit e}^{-}}$
1  From a full four-body amplitude analysis of the ${{\mathit B}^{-}}$ $\rightarrow$ ${{\mathit D}^{*+}}{{\mathit \pi}^{-}}{{\mathit \pi}^{-}}$ decay.
2  From the combined fit of the ${{\mathit M}}$ ( ${{\mathit D}^{+}}{{\mathit \pi}^{-}}$ ) and ${{\mathit M}}$ ( ${{\mathit D}^{*+}}{{\mathit \pi}^{-}}$ ) distributions. and A$_{{{\mathit D}_{{2}}} }$ fixed to the theoretical prediction of $-1$.
3  From the fit of the ${{\mathit M}}$ ( ${{\mathit D}^{0}}{{\mathit \pi}^{+}}$ ) distribution. The widths of the ${{\mathit D}_{{1}}^{+}}$ and ${{\mathit D}_{{2}}^{*+}}$ are fixed to 25 MeV and 37 MeV, and A$_{{{\mathit D}_{{1}}} }$ and A$_{{{\mathit D}_{{2}}} }$ are fixed to the theoretical predictions of 3 and $-1$, respectively.
4  Fit includes the contribution from ${{\mathit D}_{{1}}^{*}{(2430)}^{0}}$ .
5  Calculated using the mass difference $\mathit m({{\mathit D}_{{1}}^{0}}$ ) $−$ $\mathit m({{\mathit D}^{*+}}$ )$_{PDG}$ reported below and $\mathit m({{\mathit D}^{*+}}$ )$_{PDG}$ = $2010.27$ $\pm0.17$ MeV. The 0.17 MeV uncertainty of the PDG mass value should be added to the experimental uncertainty of 0.9 MeV.
6  No systematic error given.

           ${{\mathit D}_{{1}}{(2420)}}$ mass (MeV)
References:
AAIJ 2020D
PR D101 032005 Determination of quantum numbers for several excited charmed mesons observed in $B^- \to D^{*+} \pi^- \pi^-$ decays
ABLIKIM 2020P
PL B804 135395 Study of $e^{+}e^{-} \to D^{+} D^{-} \pi^{+} \pi^{-} $ at center-of-mass energies from 4.36 to 4.60 GeV
AAIJ 2013CC
JHEP 1309 145 Study of ${{\mathit D}_{{J}}}$ Meson Decays to ${{\mathit D}^{+}}{{\mathit \pi}^{-}}$ , ${{\mathit D}^{0}}{{\mathit \pi}^{+}}$ and ${{\mathit D}^{*+}}{{\mathit \pi}^{-}}$ Final States in ${{\mathit p}}{{\mathit p}}$ Collisions
ABRAMOWICZ 2013
NP B866 229 Production of the Excited Charm Mesons ${{\mathit D}_{{1}}}$ and ${{\mathit D}_{{2}}^{*}}$ at HERA
DEL-AMO-SANCHEZ 2010P
PR D82 111101 Observation of New Resonances Decaying to ${{\mathit D}}{{\mathit \pi}}$ and ${{\mathit D}^{*}}{{\mathit \pi}}$ in Inclusive ${{\mathit e}^{+}}{{\mathit e}^{-}}$ Collisions near $\sqrt {s }$ = 10.58 GeV
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
ABE 2005A
PRL 94 221805 Observation of the ${{\mathit D}_{{1}}{(2420)}}$ $\rightarrow$ ${{\mathit D}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}$ Decays
ABE 2004D
PR D69 112002 Study of ${{\mathit B}^{-}}$ $\rightarrow$ ${{\mathit D}^{**0}}{{\mathit \pi}^{-}}$ ( ${{\mathit D}^{**0}}$ $\rightarrow$ ${{\mathit D}}{}^{(*)+}$ ${{\mathit \pi}^{-}}$ ) Decays
ABREU 1998M
PL B426 231 First Evidence for a Charm Radial Excitation, ${{\mathit D}^{*'}}$
AVERY 1994C
PL B331 236 Production and Decay of ${{\mathit D}_{{1}}{(2420)}^{0}}$ and ${{\mathit D}_{{2}}^{*}{(2460)}^{0}}$
BERGFELD 1994B
PL B340 194 Observation of ${{\mathit D}_{{1}}{(2420)}^{+}}$ and ${{\mathit D}_{{2}}^{*}{(2460)}^{+}}$
FRABETTI 1994B
PRL 72 324 Measurement of the Masses and Widths of $\mathit L$ = 1 Charm Mesons
AVERY 1990
PR D41 774 P-wave Charmed Mesons in ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ Annihilation
ALBRECHT 1989H
PL B232 398 Resonance Decomposition of the ${{\mathit D}^{*}{(2420)}^{0}}$ Through a Decay Angular Analysis
ANJOS 1989C
PRL 62 1717 Observation of Excited Charmed Mesons