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Related papers: Branching ratios and direct CP asymmetries in $D\t…

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We propose a theoretical framework for analyzing two-body nonleptonic $D$ meson decays, based on the factorization of short-distance (long-distance) dynamics into Wilson coefficients (hadronic matrix elements of four-fermion operators). The…

High Energy Physics - Phenomenology · Physics 2012-09-25 Hsiang-nan Li , Cai-Dian Lu , Fu-Sheng Yu

We calculate all the branching ratios and direct CP violations of $B \to PV$ decays in a most general two-Higgs-doublet model with spontaneous CP violation. As the model has rich CP-violating sources, it is shown that the new physics…

High Energy Physics - Phenomenology · Physics 2008-11-26 Y. L. Wu , C. Zhuang

We calculated the CP averaged branching ratios and CP-violating asymmetries of two-body charmless hadronic Bs->PP,PV decays with the QCDF approach, including the contributions from the chirally enhanced power corrections and weak…

High Energy Physics - Phenomenology · Physics 2009-05-11 Junfeng Sun , Guohuai Zhu , Dongsheng Du

Based on the low-energy effective Hamiltonian with the generalized factorization, we calculate the new physics contributions to branching ratios and CP-violating asymmetries of the charmless hadronic decays $B_s \to h_1 h_2$ in the standard…

High Energy Physics - Phenomenology · Physics 2009-10-31 Dong Zhang , Zhenjun Xiao , Chong Sheng Li

We calculate the branching ratio and direct CP asymmetry in nonleptonic two body B decays B^+- ->\pi^+- \eta'. It is shown that the tree diagram and gluon fusion mechanism via penguin diagram have comparable contributions to these decays…

High Energy Physics - Phenomenology · Physics 2009-10-31 Mohammad R. Ahmady , Emi Kou

We re-examine direct CP violation in the quasi-two-body $D\to V\!P$ decays and study CP asymmetries in three-body $D$ decays proceeding through intermediate vector resonances within the framework of the topological amplitude approach for…

High Energy Physics - Phenomenology · Physics 2021-09-07 Hai-Yang Cheng , Cheng-Wei Chiang

We calculate the CP-averaged branching ratios and CP-violating asymmetries of a number of two-body charmless hadronic decays $\bar{B_s^0} \to PP, PV, VV$ in the perturbative QCD (pQCD) approach to leading order in $\alpha_s$ (here $P$ and…

High Energy Physics - Phenomenology · Physics 2008-11-26 Ahmed Ali , Gustav Kramer , Ying Li , Cai-Dian Lu , Yue-Long Shen , Wei Wang , Yu-Ming Wang

Using the general factorization approach, we present a detailed investigation for the branching ratios, CP asymmetries and longitudinal polarization fractions in all charmless hadronic $B \to VV$ decays (except for the pure annihilation…

High Energy Physics - Phenomenology · Physics 2008-11-26 Shou-Shan Bao , Fang Su , Yue-Liang Wu , Ci Zhuang

Direct CP violation in the hadronic charm decays provides a good testing ground for the Kobayashi-Maskawa mechanism in the Standard Model. Any significant deviations from the expectation would be indirect evidence of physics beyond the…

High Energy Physics - Phenomenology · Physics 2019-11-20 Hai-Yang Cheng , Cheng-Wei Chiang

The presence of additional strong phase from power corrections and other chirally enhanced terms makes it more difficult to predict direct CP asymmetries in two-body charmless B decays. In this talk, I would like to report on a recent work…

High Energy Physics - Phenomenology · Physics 2009-11-11 T. N. Pham

Branching fractions and CP-violating asymmetries of charmless $\bar B_s\to PP, VP, VV$ decays (P and V denoting pseudoscalar and vector mesons, respectively) are re-examined in the framework of QCD factorization (QCDF). We take into account…

High Energy Physics - Phenomenology · Physics 2010-01-07 Hai-Yang Cheng , Chun-Khiang Chua

Motivated by the recent observation of CP violation in the charm sector by LHCb, we study direct CP asymmetries in the standard model (SM) for the singly Cabibbo-suppressed two-body hadronic decays of charmed mesons using the…

High Energy Physics - Phenomenology · Physics 2013-05-30 Hai-Yang Cheng , Cheng-Wei Chiang

The $B \to \pi$ and $B \to K$ transitions involved in hadronic B decays are investigated in a phenomenological way through the framework of QCD factorization. By comparing our results with experimental branching ratios from the BELLE, BABAR…

High Energy Physics - Phenomenology · Physics 2010-02-17 O. Leitner , X. -H. Guo , A. W. Thomas

We analyzed the nonleptonic decays $B/B_s\to \psi(2S) V $ with $V=(\rho, \omega, K^{*}, \phi)$ by employing the perturbative QCD (PQCD) factorization approach. Here the branching ratios, the $CP$ asymmetries and the complete set of…

High Energy Physics - Phenomenology · Physics 2017-09-18 Zhou Rui , Ya Li , Zhen-Jun Xiao

Motivated by extensive new high-precision experimental data, we present an updated analysis of the two-body charm decays $D \to PV$ (with $P =\pi,K, \eta^{(\prime)}$ and $V =\rho, K^*, \omega, \phi$) within the factorization-assisted…

High Energy Physics - Phenomenology · Physics 2025-11-14 Hui Zheng , Jia-Rui Dong , Si-Hong Zhou

Direct CP violation in two-body $D\to PP$ and $D\to V\!P$ decays is studied within the framework of the topological amplitude approach for tree amplitudes and the QCD factorization approach for penguin amplitudes. It is the interference…

High Energy Physics - Phenomenology · Physics 2021-12-30 Hai-Yang Cheng , Cheng-Wei Chiang

We study the hadronic charmless two-body B decays to final states involving pseudoscalar and vector mesons with QCD factorization approach, including the contributions from the chirally enhanced power corrections and weak annihilations. The…

High Energy Physics - Phenomenology · Physics 2014-11-17 Dongsheng Du , Haijun Gong , Junfeng Sun , Deshan Yang , Guohuai Zhu

Motivated by the recent measurements of CP violating effects in singly Cabibbo suppressed $D^0$ decays, we revisit the theoretical predictions of these channels. Using up-to-date values for the decay constants and form factors, we find…

High Energy Physics - Phenomenology · Physics 2023-12-21 Alexander Lenz , Maria Laura Piscopo , Aleksey V. Rusov

We study the CP-odd and CP-even observables of the $B$ mesons decaying into a baryon and antibaryon. We estimate these observables through the $^3P_0$ model and chiral selection rule. The decay branching ratios of $ B^+ \to p…

High Energy Physics - Phenomenology · Physics 2023-06-27 Chao-Qiang Geng , Xiang-Nan Jin , Chia-Wei Liu

CP asymmetries in B_d \to D^+D^-, D^{*+}D^-, D^+D^{*-} and D^{*+}D^{*-} decays are investigated with the help of the factorization approximation and isospin relations. We find that the direct CP violation is governed only by the…

High Energy Physics - Phenomenology · Physics 2009-10-31 Zhi-zhong Xing
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