Resonant parameters of the $Y(4220)
Phys. Rev. D 95, 092007 (2017) The vector charmoniumlike state $Y(4220)$ was reported recently in the cross sections of $e^+e^-\to \omega \chi_{c0}$, $\pi^+\pi^-h_c$, $\pi^+\pi^- J/\psi$, and $D^0 D^{*-}\pi^+ + c.c.$ measured by the BESIII experiment. A combined fit is performed to the cross section...
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Main Authors | , , |
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Format | Journal Article |
Language | English |
Published |
30.03.2017
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Subjects | |
Online Access | Get full text |
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Summary: | Phys. Rev. D 95, 092007 (2017) The vector charmoniumlike state $Y(4220)$ was reported recently in the cross
sections of $e^+e^-\to \omega \chi_{c0}$, $\pi^+\pi^-h_c$, $\pi^+\pi^- J/\psi$,
and $D^0 D^{*-}\pi^+ + c.c.$ measured by the BESIII experiment. A combined fit
is performed to the cross sections of these four final states to extract the
resonant parameters of the $Y(4220)$. We determine a mass $M=(4219.6\pm 3.3\pm
5.1)$~MeV/$c^2$ and a total width $\Gamma=(56.0\pm 3.6\pm 6.9)$~MeV for the
$Y(4220)$, where the first uncertainties are statistical and the second ones
systematic. Assuming the $Y(4220)$ decays dominantly to the above four modes
and their isospin symmetric modes, we also estimate its leptonic decay width
and decay branching fractions. These information is essential for the
understanding of the nature of this state. |
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DOI: | 10.48550/arxiv.1703.10351 |