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Autor:
Zhang, Ya, Wang, Yu-Die, Ma, Meng-Meng, Zhang, Ying-Ying, Du, Dong-Sheng, Zhu, Xian-Can, Li, Xiao-Hong
Publikováno v:
Plants (2223-7747); Nov2024, Vol. 13 Issue 22, p3205, 12p
We study $B_s^0 \to J/\psi f_0(980)$ decays, the quark content of $f_0(980)$ and the mixing angle of $f_0(980)$ and $\sigma(600)$. We calculate not only the factorizable contribution in QCD facorization scheme but also the nonfactorizable hard specta
Externí odkaz:
http://arxiv.org/abs/1212.5987
Publikováno v:
Chin.Phys.C34:1680-1686,2010
We calculate the branching ratio of $B\to J/\Psi\pi^{0}$ with a mixed formalism that combines the QCD-improved factorization and the perturbative QCD approaches. The result is consistent with experimental data. The quite small penguin contribution in
Externí odkaz:
http://arxiv.org/abs/0904.1304
Publikováno v:
Eur.Phys.J.C60:107-117,2009
The Bc --> J/psi pi, etac pi decays are studied with the perturbative QCD approach. It is found that form factors and branching ratios are sensitive to the parameters w, v, f_J/psi and f_etac, where w and v are the parameters of the charmonium wave f
Externí odkaz:
http://arxiv.org/abs/0808.3619
Autor:
Li, Jing-Wu, Du, Dong-Sheng
Publikováno v:
Phys.Rev.D78:074030,2008
We study $B\to J/\Psi \eta^{(\prime)}$ decays and suggest two methods to determine the $\eta-\eta^{\prime}$ mixing angle. We calculate not only the factorizable contribution in QCD facorization scheme but also the nonfactorizable hard spectator corre
Externí odkaz:
http://arxiv.org/abs/0707.2631
Publikováno v:
Chin.Phys.Lett.23:2038-2041,2006
We calculate the branching ratio of $D^0 \to \phi \bar K^0$ decay using the so-called perturbation QCD approach based on $k_T$ factorization. Our result shows this branching ratio is $(8.7 \pm1.4)\times 10^{-3}$, which is consistent with experimental
Externí odkaz:
http://arxiv.org/abs/hep-ph/0511239
Publikováno v:
Eur.Phys.J.C45:711-720,2006
We investigate the branching ratios and direct CP asymmetries of $B_c^+\to D^0\pi^+$ and $B_c^+\to D^+\pi^0$ decays in the PQCD approach. All the diagrams with emission topology or annihilation topology are calculated strictly. A branching ratio of $
Externí odkaz:
http://arxiv.org/abs/hep-ph/0501082
Publikováno v:
Phys.Lett.B619:105-114,2005
We calculate the mass and decay constant of $I=1/2$ scalar mesons composed of quark-antiquark pairs based on QCD sum rule. The quauk-antiquark pairs can be $s\bar{q}$ or $q\bar{s}$ ($q=u,d$) in quark model, the quantum numbers of spin and orbital ang
Externí odkaz:
http://arxiv.org/abs/hep-ph/0409302
Publikováno v:
Eur.Phys.J. C37 (2004) 173-184
We calculate $D_s^+\to \phi$ transition form factors $V$, $A_0$, $A_1$ and $A_2$, and study semileptonic decay of $D_s^+\to \phi \bar{\ell}\nu$ based on QCD sum rule method. We compare our results of the ratios of $V(0)/A_1(0)$, $A_2(0)/A_1(0)$, $\Ga
Externí odkaz:
http://arxiv.org/abs/hep-ph/0308259