${{\boldsymbol D}_{{2}}^{*}{(2460)}^{0}}$ POLARIZATION AMPLITUDE A$_{{{\boldsymbol D}_{{2}}}}$ INSPIRE search

A polarization amplitude A$_{{{\mathit D}_{{2}}}}$ is a parameter that depends on the initial polarization of the ${{\mathit D}_{{2}}}$. For ${{\mathit D}_{{2}}}$ decays the helicity angle, ${{\mathit \theta}_{{H}}}$, distribution varies like 1 + A$_{{{\mathit D}_{{2}}}}$ cos $^2{{\mathit \theta}_{{H}}}$, where ${{\mathit \theta}_{{H}}}$ is the angle in the ${{\mathit D}^{*}}$ rest frame between the two pions emitted by the ${{\mathit D}_{{2}}}$ $\rightarrow$ ${{\mathit D}^{*}}{{\mathit \pi}}$ and ${{\mathit D}^{*}}$ $\rightarrow$ ${{\mathit D}}{{\mathit \pi}}$ .

VALUE

EVTS

DOCUMENT ID

TECN

COMMENT

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

$-1.16$ $\pm0.35$

2.3k

ABRAMOWICZ

2013

ZEUS

${{\mathit e}^{\pm}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit D}^{(*)+}}{{\mathit \pi}^{-}}{{\mathit X}}$

$\text{consistent with -1}$

243k

DEL-AMO-SANCH..

2010

BABR

${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit D}^{+}}{{\mathit \pi}^{-}}{{\mathit X}}$

$-0.74$ ${}^{+0.49}_{-0.38}$

AVERY

1994

CLE2

${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit D}^{*+}}{{\mathit \pi}^{-}}{{\mathit X}}$

¹ From the combined fit of the ${{\mathit M}}$( ${{\mathit D}^{+}}{{\mathit \pi}^{-}}$ ) and ${{\mathit M}}$( ${{\mathit D}^{*+}}{{\mathit \pi}^{-}}$ ) distributions.

² Systematic uncertainties not estimated.

References:

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

AVERY

1994C

PL B331 236

Production and Decay of ${{\mathit D}_{{1}}{(2420)}^{0}}$ and ${{\mathit D}_{{2}}^{*}{(2460)}^{0}}$