Zobrazeno 21 - 30
of 327
pro vyhledávání: '"Lü, Cai-Dian"'
Publikováno v:
Chin. Phys. C42 (2018) 083107
Within the framework of the perturbative QCD approach, we calculate the time-like $B_cB_c(B_c^*)$ form factors $F(Q^2)$ and $A_2(Q^2)$. We include relativistic corrections and QCD corrections, either of which can give about $20\%$ correction to the l
Externí odkaz:
http://arxiv.org/abs/1807.05776
The doubly weak transition $b\to dd{\bar s}$ is highly suppressed in the standard model, which makes it a potential channel to explore new physics signals. We present a study of the exclusive two body wrong sign weak decay $\smash{\overline B}^0\to K
Externí odkaz:
http://arxiv.org/abs/1807.05350
Publikováno v:
Phys. Rev. D 97, 114016 (2018)
We study the $e^+e^-\to VP$ and $e^+e^-\to TP$ processes in the perturbative QCD approach based on $k_T$ factorization, where the $P,V$ and $T$ denotes a light pseudo-scalar, vector and tensor meson, respectively. We point out in the case of $e^+e^-\
Externí odkaz:
http://arxiv.org/abs/1802.09718
Publikováno v:
Phys. Rev. D 97, 034033 (2018)
We study the three-body radiative decays $B\to \phi(\rho) K\gamma$ induced by a flavor-changing neutral current in the perturbative QCD approach. Pseudoscalar-vector ($PV$) distribution amplitudes (DAs) are introduced for the final-state $\phi K$ ($\
Externí odkaz:
http://arxiv.org/abs/1711.10936
Publikováno v:
Eur. Phys. J. C (2018) 78: 835
After the discovery of the Higgs boson, several future experiments have been proposed to study the Higgs boson properties, including two circular lepton colliders, the CEPC and the FCC-ee, and one linear lepton collider, the ILC. We evaluate the prec
Externí odkaz:
http://arxiv.org/abs/1711.07243
Publikováno v:
In Nuclear Physics, Section B June 2022 979
Publikováno v:
Chin.Phys. C42 (2018) 063101
We calculate the $D^0$-$\overline{D}^0$ mixing parameter $y$ in the factorization-assisted topological-amplitude (FAT) approach, considering contributions from $D^{0}\to PP$, $PV$, and $VV$ modes, where $P$ ($V$) stands for a pseudoscalar (vector) me
Externí odkaz:
http://arxiv.org/abs/1705.07335
The existence of doubly heavy flavor baryons has not been well established experimentally so far. In this Letter we systematically investigate the weak decays of the doubly charmed baryons, $\Xi_{cc}^{++}$ and $\Xi_{cc}^{+}$, which would be helpful f
Externí odkaz:
http://arxiv.org/abs/1703.09086
We compute perturbative QCD corrections to $B \to D$ form factors at leading power in $\Lambda/m_b$, at large hadronic recoil, from the light-cone sum rules (LCSR) with $B$-meson distribution amplitudes in HQET. QCD factorization for the vacuum-to-$B
Externí odkaz:
http://arxiv.org/abs/1701.06810
Publikováno v:
Physics Letters B 767(2017) 232-235
Doubly-heavy baryons, with two heavy and one light quarks, are expected to exist in QCD and their masses have been predicted in the quark model. However their existence is not well established so far in experiment. In this work, we explore the possib
Externí odkaz:
http://arxiv.org/abs/1701.03284