Zobrazeno 1 - 10
of 117
pro vyhledávání: '"Zhao, Zhen-Xing"'
Motivated by recent experimental data on $\Sigma^+\to p\gamma$ at BESIII, we investigate a class of hyperon weak radiative decays. To estimate these processes, in our research, we employ a new type of light-front quark model with a three-quark pictur
Externí odkaz:
http://arxiv.org/abs/2312.17568
In this work, we perform a QCD sum rules analysis on the $\Xi_{Q}-\Xi_{Q}^{\prime}$ mixing. Contributions from up to dimension-6 four-quark operators are considered. However, it turns out that, only dimension-4 and dimension-5 operators contribute, w
Externí odkaz:
http://arxiv.org/abs/2305.08050
In this work, a three-quark picture is constructed using a bottom-up approach for baryons in light-front quark model. The shape parameters, which characterize the momentum distribution inside a baryon, are determined with the help of the pole residue
Externí odkaz:
http://arxiv.org/abs/2304.07698
We calculate the W-exchange contribution to the $\Xi_{cc}^{++}\to\Xi_{c}^{+(\prime)}\pi^{+}$ decay using light-cone sum rules. The two-particle light-cone distribution amplitudes of the pion are used as non-perturbative input for the sum rules calcul
Externí odkaz:
http://arxiv.org/abs/2206.13196
Autor:
Zhao, Zhen-Xing
In this work, we investigate the weak decays of spin-3/2 triply heavy baryons to spin-1/2 doubly/triply heavy baryons. We first obtain the form factors using the light-front quark model in the diquark picture, and then apply them to some phenomenolog
Externí odkaz:
http://arxiv.org/abs/2204.00759
Publikováno v:
Eur. Phys. J. C 82 (2022) 113
In this work, we study the resonance contributions to the decay $B^-\to K^+K^-\pi^-$, which is dominated by the scalar $f_0(980), K_0^*(1430)$, vector $\rho(1450), \phi(1020), K^*(892)$ and tensor $f_2(1270)$ resonances. The three-body decay is reduc
Externí odkaz:
http://arxiv.org/abs/2111.05647
Autor:
Xing, Zhi-Peng, Zhao, Zhen-Xing
A comprehensive study of $b\to c$ weak decays of doubly heavy baryons is presented in this paper. The transition form factors as well as the pole residues of the initial and final states are respectively obtained by investigating the three-point and
Externí odkaz:
http://arxiv.org/abs/2109.00216
The anomalous dimensions for the interpolating currents of baryons are indispensable inputs in a serious QCD analysis of baryon. However, the results in the literature are vague. In view of this, in this work, we investigate the one-loop anomalous di
Externí odkaz:
http://arxiv.org/abs/2104.06209
There exists a significant deviation between the most recent Lattice QCD simulation and experimental measurement by Belle for $\Xi_{c}^{0}\to\Xi^{-}\ell^{+}\nu_{\ell}$. In this work, we investigate the $\Xi_{c}\to\Xi$ form factors in QCD sum rules. T
Externí odkaz:
http://arxiv.org/abs/2103.09436
Heavy quark expansion can nicely explain the lifetime of $\Lambda_{b}$. However, there still exist sizable uncertainties from the four-quark operator matrix elements of $\Lambda_{b}$ in $1/m_{b}^{3}$ corrections, which describe the spectator effects.
Externí odkaz:
http://arxiv.org/abs/2101.11874