Measurement of the branching fraction for $\psi(3770) \to \gamma \chi_{c0}$ - INSPIRE

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Measurement of the branching fraction for $\psi(3770) \to \gamma \chi_{c0}$

BESIII

Collaboration

Nov 3, 2015

7 pages

Published in:

Phys.Lett.B 753 (2016) 103-109

Published: Feb 10, 2016

e-Print:

1511.01203 [hep-ex]

DOI:

10.1016/j.physletb.2015.11.074

PDG:

{{\mathit \psi}{(3770)}}

\rightarrow

{{\mathit \gamma}}{{\mathit \chi}_{{{c0}}}}

Experiments:

BEPC-BES-III

View in:

reference search9 citations

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Abstract: (Elsevier)

By analyzing a data set of 2.92 fb−1 of e+e− collision data taken at s=3.773 GeV and 106.41×106 ψ(3686) decays taken at s=3.686 GeV with the BESIII detector at the BEPCII collider, we measure the branching fraction and the partial decay width for ψ(3770)→γχc0 to be B(ψ(3770)→γχc0)=(6.88±0.28±0.67)×10−3 and Γ[ψ(3770)→γχc0]=(187±8±19) keV , respectively. These are the most precise measurements to date.

Note:

11 pages, 2 figures

electron positron: annihilation
electron positron: colliding beams
psi(3770): electroproduction
psi(3770): radiative decay
chi/c0(3415)
psi(3770): branching ratio
psi(3770): width
Beijing Stor
BES
experimental results

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Figures(2)

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