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Article overview
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Investigations on the charmless decays of $Y(4260)$ | | Gang Li
; Chun-Sheng An
; Peng-Yu Li
; Di Liu
; Xiao Zhang
; Zhu Zhou
; | | Date: |
10 Dec 2014 | | Abstract: | Apart from the charmful decay channels of $Y(4260)$, the charmless decay
channels of $Y(4260)$ also provide us a good platform to study the nature and
the decay mechanism of $Y(4260)$. In this paper, we propose to probe the
structure of $Y(4260)$ through the charmless decays $Y(4260) o VP$ via
intermediate $D_1ar D+c.c.$ meson loops, where $V$ and $P$ stand for light
vector and pseudoscalar mesons, respectively. Under the molecule ansatz of
$Y(4260)$, the predicted total branching ratio $BR_{VP}$ for all $Y(4260) o
VP$ processes are about $(0.34^{+0.32}_{-0.23})%$ to $(0.75^{+0.72}_{-0.52})%$
with the cutoff parameter $alpha=2sim 3$. Numerical results show that the
intermediate $D_1 ar D+c.c.$ meson loops may be a possible transition
mechanism in the $Y(4260) o VP$ decays. These predicted branching ratios are
the same order to that of $Y(4260) o Z_c^+(3900) pi^-$, which may be an
evidence of $D_1D$ molecule and can be examined by the forthcoming BESIII data
in the near future. | | Source: | arXiv, 1412.3221 | | Services: | Forum | Review | PDF | Favorites | |
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