In addition to anomalies associated with the muon <a:math xmlns:a="http://www.w3.org/1998/Math/MathML" display="inline"><a:mi>g</a:mi><a:mo>−</a:mo><a:mn>2</a:mn></a:math> and branching ratio (BR) of <c:math xmlns:c="http://www.w3.org/1998/Math/MathML" display="inline"><c:mrow><c:mi>B</c:mi><c:mo stretchy="false">→</c:mo><c:msup><c:mrow><c:mi>D</c:mi></c:mrow><c:mrow><c:mo stretchy="false">(</c:mo><c:mo>*</c:mo><c:mo stretchy="false">)</c:mo></c:mrow></c:msup><c:mi>τ</c:mi><c:mover...

Abstract The observed flavor-changing neutral-current (FCNC) processes in the standard model (SM) arise from loop diagrams involving weak charged currents mediated by $W$-gauge boson. Nevertheless, top-quark FCNCs and lepton flavor-violating resulting same mechanism are highly suppressed. We investigate possible new physics effects that can enhance suppressed FCNC processes, such as a top quark decaying into light with Higgs or gauge boson final state, i.e., $t\to q(h,V)$ $V=\gamma, Z, g$,...

The effects of the peculiar $CP$ conserving phases in unparticle propagators are explored. We find that have a great impact on violation. adopt decays ${B}_{d}\ensuremath{\rightarrow}{\ensuremath{\pi}}^{+}{\ensuremath{\pi}}^{\ensuremath{-}}$ and ${B}_{d}\ensuremath{\rightarrow}{\ensuremath{\ell}}^{\ensuremath{-}}{\ensuremath{\ell}}^{+}$ as illustrators to demonstrate influences these direct asymmetries. In particular, we emphasize physics is only model suggested date could give asymmetries...

Agarwood is derived from Aquilaria trees, the trade of which has come under strict control with a listing in Appendix II Convention on International Trade Endangered Species Wild Fauna and Flora. Many secondary metabolites agarwood are known to have medicinal value humans, including compounds that been shown elicit sedative effects exhibit anti-cancer properties. However, little about genome, transcriptome, biosynthetic pathways responsible for producing such agarwood.In this study, we...

Agarwood, a heartwood derived from Aquilaria trees, is valuable commodity that has seen prevalent use among many cultures. In particular, it widely used in herbal medicine and compounds agarwood are known to exhibit medicinal properties. Although there exists much research into herbs extraction of high value compounds, few have focused on increasing the quantity target through stimulation its related pathways this species.

We investigate the exclusive nonleptonic B meson decays $\stackrel{\ensuremath{\rightarrow}}{B}\ensuremath{\varphi}K$ in perturbative QCD formalism. It is shown that end-point (logarithmic and linear) singularities decay amplitudes do not exist, after ${k}_{T}$ threshold resummations are included. Power counting for emission annihilation topologies of diagrams, including both factorizable nonfactorizable ones, discussed with Sudakov effects taken into account. Our predictions branching...

We analyze the $B\ensuremath{\rightarrow}(J/\ensuremath{\psi},{\ensuremath{\chi}}_{c0},{\ensuremath{\chi}}_{c1},{\ensuremath{\eta}}_{c}){K}^{(*)}$ decays, which have small or even vanishing branching ratios in naive factorization assumption (FA). calculate nonfactorizable corrections to FA perturbative QCD approach based on ${k}_{T}$ theorem. The charmonium distribution amplitudes are inferred from nonrelativistic heavy quarkonium wave functions. It is found that contributions enhance and...

Unparticles proposed by Georgi carry $CP$ conserving phases in their propagators. We demonstrate that these peculiar have an important impact on violation. Without including the strong QCD phases, we study unparticle phase effects direct asymmetries exclusive decays of ${\overline{B}}_{d}\ensuremath{\rightarrow}{\ensuremath{\pi}}^{+}{\ensuremath{\pi}}^{\ensuremath{-}}$ and $B\ensuremath{\rightarrow}\ensuremath{\pi}K$, which flavor changing neutral currents are forbidden at tree level but...

It has been known that there exists a disagreement emerged between the determination of |Vub| from inclusive B→Xuℓν decays and exclusive B→πℓν decays. In order to solve mismatch, we investigate left–right (LR) mixing effects, denoted by ξu, in leptonic semileptonic b→u We find new interactions (V+A)×(V−A) induced via LR can explain mismatch values if Re(ξu)=−(0.14±0.12). Furthermore, also effects enhance branching fractions for B→τν B→ρℓν 30% 17%, respectively, while reducing fraction B→γℓν 18%.

We develop perturbative QCD formalism for three-body nonleptonic $B$ meson decays. Leading contributions are identified by defining power counting rules various topologies of amplitudes. The analysis is simplified into the one two-body decays introducing two-meson distribution This predicts both nonresonant and resonant contributions, can be generalized to baryonic

We study three-body nonleptonic decays $B\to VVP$ by introducing two-meson distribution amplitudes for the vector-pseudoscalar pair, such that analysis is simplified into one two-body decays. The twist-2 and twist-3 $\phi K$ amplitudes, associated with longitudinally transversely polarized $\phi$ mesons, are constrained experimental data of $\tau\to\phi K\nu$ $B\to\phi K\gamma$ branching ratios. then predict $B\to\phi\phi decay spectra in invariant mass. Since resonant contribution channel...

We study the impacts of nonuniversal ${Z}^{\ensuremath{'}}$ model, providing flavor-changing neutral current at tree level, on branching ratios (BRs), CP asymmetries (CPAs), and polarization fractions $B$ decays. find that, for satisfying data, new left- right-handed couplings have to be included same time. The introduced effective interactions not only could effectively explain puzzle small longitudinal in $B\ensuremath{\rightarrow}{K}^{*}\ensuremath{\phi}$ decays, but also provide a...

We study the dilepton forward–backward and longitudinal, normal transverse lepton polarization asymmetries in heavy baryon decays of Λb→Λl+l−. show that have a less dependence on nonperturbative QCD effects. In standard model, we find integrated (FBAs) three components polarizations sum rule approach (pole model) are −0.13(−0.12) (58.3,−9.4,−0.07)% ((58.3,−12.6,−0.07)%) for Λb→Λμ+μ− −0.04(−0.03) (10.9,−10.0,−0.39)% ((10.9,−0.2,−0.34)%) Λb→Λτ+τ−, respectively.

We try to understand the polarization puzzle in $B\to \phi K^*$ decays with a simple Higgs model associated flavor changing neutral current at tree level. The new interactions can effectively reduce longitudinal $|A_0|^2$. In particular, we find that if couplings of $b$-quark different chiralities are same, transverse $|A_\perp|^2$ receive largest contribution and its value be as large 30%. On other hand, opposite sign couplings, $|A_{\parallel}|^2$ is enhanced.

We investigate the rare baryonic exclusive decays of $\Lambda_b\to \Lambda l^+ l^- (l=e,\mu,\tau)$ with polarized $\Lambda $. Under approximation heavy quark effective theory (HQET), in standard model we derive differential decay rates and various polarization asymmetries by including lepton mass effects. find that long-distance effects branching ratios are $5.3\times 10^{-5}$ for l^-\ (l=e,\mu)$ $1.1\times \tau^+\tau^-$. The new physics also discussed. integrated longitudinal $\Lambda$...

We study the T violating effects in baryonic decays of ${\ensuremath{\Lambda}}_{b}\ensuremath{\rightarrow}\ensuremath{\Lambda}{l}^{+}{l}^{\ensuremath{-}} (l=e,\ensuremath{\mu})$ with a polarized $\ensuremath{\Lambda}.$ show that transverse $\ensuremath{\Lambda}$ polarizations these could be as large $50%$ $\mathrm{CP}$ theories beyond standard model such SUSY models, which can tested various future hadron colliders.

We study the lepton angular distributions in $B\to D^{(*)} \ell \nu_{\ell}$ decays. The asymmetries decays with general effective interactions are examined. demonstrate that sensitive to new physics a right-handed quark current.

We examine the exclusive rare decays of $B\ensuremath{\rightarrow}{K}_{0}^{*}(1430)\ensuremath{\ell}\overline{\ensuremath{\ell}}$ with ${K}_{0}^{*}(1430)$ being $p$-wave scalar meson and $\ensuremath{\ell}=\ensuremath{\nu}$, $e$, $\ensuremath{\mu}$, $\ensuremath{\tau}$ in standard model. The form factors for $B\ensuremath{\rightarrow}{K}_{0}^{*}$ transition matrix elements are evaluated light-front quark For $B\ensuremath{\rightarrow}{K}_{0}^{*}\ensuremath{\ell}\overline{\ensuremath{\ell}}$,...

We study the productions of p-wave mesons $K^*_{0}(1430)$, $K_{1}(1270)$ and $K_{1}(1400)$ in B decays. By generalized factorization approach, we find that branching ratios $B\to K^*_{0}(1430) \phi$ are similar to those K while K_{1}(1270) K_{1}(1400) $O(10^{-5})$ $O(10^{-6})$, respectively. In terms observation \gamma$ by BELLE, can remove sign ambiguity mixing angle for physical states $K_1(1270)$ $K_{1}(1400)$. addition, analyze annihilation contributions decays K_1 conclude they could be...