arXiv subjects

Jie-Sheng Yu

Publications and source records attributed to Jie-Sheng Yu.

3 recordsLinked to original sources

arXiv2021

Pole analysis on the doubly charmed meson in $D^0D^0\pi^+$ mass spectrum

In this paper we study the scattering amplitudes of $D^{0}D^{0}\pi^+$-$D^{*+}D^{0}$ coupled channels based on $K$-matrix within the Chew-Mandelstam formalism. The $D^{0}D^{0}\pi^{+}$ invariant mass spectrum of LHCb is fitted and the pole parameters of the $T_{cc}^+$ are extracted. The analysis of pole behavior suggests that the $T_{cc}^+$ may originate from a $D^{*+}D^{0}$ virtual state and is formed as a result of an interplay between an attractive interaction between $D^0$ and $D^{*+}$ and coupling to $D^{0}D^0\pi^+$ channel.

hep-ph↗

arXiv2011

Categorizing resonances X(1835), X(2120) and X(2370) in the pseudoscalar meson family

Inspired by the newly observed three resonances X(1835), X(2120) and X(2370), in this work we systematically study the two-body strong decays and double pion decays of $η(1295)/η(1475)$, $η(1760)/X(1835)$ and $X(2120)/X(2370)$ by categorizing $η(1295)/η(1475)$, $η(1760)/X(1835)$, X(2120) and X(2370) as the radial excitations of $η(548)/η^\prime(958)$. Our numerical results indicate the followings: (1) The obtained theoretical strong decay widths of three pseudoscalar states $η(1295)$, $η(1475)$ and $η(1760)$ are consistent with the experimental measurements; (2) X(1835) could be the second radial excitation of $η^\prime(958)$; (3) X(2120) and X(2370) can be explained as the third and fourth radial excitations of $η(548)/η^\prime(958)$, respectively.

hep-ph↗

arXiv2010

Newly observed D(2550), D(2610), and D(2760) as 2S and 1D charmed mesons

We study three newly observed D(2550), D(2610), and D(2760) by the BaBar Collaboration utilizing the mass spectra and investigating the strong decays. Our calculation indicates that D(2610) is an admixture of $2^3S_1$ and $1^3D_1$ with $J^P=1^-$. $D(2760)$ can be explained as either the orthogonal partner of D(2610) or $1^3D_3$. Our estimate of the decay width for $D(2550)$, assuming it as $2^1S_0$, is far below the experimental value. the threshold effect because the strong decay of $D(2550)\to D_0^*π$ is forbidden.} The decay behavior of the remaining two 1D charmed mesons, i.e., $^3D_2$ and $^1D_2$ ($J^P=2^-$) states, is predicted, which will help future experimental search for these missing $D$-wave charmed mesons.

hep-ph↗