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Beta diversity, which involves the assessment of differences between communities, is an important problem in ecological studies. Many statistical methods have been developed to quantify beta diversity, and among them, UniFrac and weighted-UniFrac (W-UniFrac) are widely used. The W-UniFrac is a weighted sum of branch lengths in a phylogenetic tree of the(More)
Metagenomics commonly refers to the study of genetic materials directly derived from environments without culturing. Several ongoing large-scale metagenomics projects related to human and marine life, as well as pedology studies, have generated enormous amounts of data, posing a key challenge for efficient analysis, as we try to 1) understand microbial(More)
We investigate whether the anomalous tensor operators with the Lorentz structure σμν(1 + γ5) ⊗ σμν(1 + γ5), which could provide a simple resolution to the polarization anomaly observed in B → φK∗ decays, could also provide a coherent resolution to the large B(B → ηK∗) and survive bounds from B → ηK decays. Parameter spaces satisfying all these experimental(More)
We investigate whether the anomalous tensor operators with the Lorentz structure σμν(1 + γ5) ⊗ σμν(1 + γ5), which could provide a simple resolution to the polarization anomaly in B → φK∗ decays, could also provide a coherent resolution to the large B(B → ηK∗) and survive bounds from B → ηK decays. Parameter spaces satisfying all these experimental data are(More)
Combining the up-to-date experimental information on B → πK, πK∗ and ρK decays, we revisit the decay rates and CP asymmetries of these decays within the framework of QCD factorization. Using an infrared finite gluon propagator of Cornwall prescription, we find that the time-like annihilation amplitude could contribute a large strong phase, while the(More)
Combining the up-to-date experimental information on B → πK, πK∗ and ρK decays, we revisit the decay rates and CP asymmetries of these decays within the framework of QCD factorization. Using an infrared finite gluon propagator of Cornwall prescription, we find that the time-like annihilation amplitude could contribute a large strong phase, while the(More)
With the potential prospects of the Υ(1S) data samples at the running LHC and upcoming SuperKEKB, the Υ(1S) → B c ρ weak decay is studied with the pQCD approach. It is found that (1) the lion's share of branching ratio comes from the longitudinal polarization helicity amplitudes; (2) branching ratio for the Υ(1S) → B c ρ decay can reach up to O(10 −9),(More)
We study the sensitivity of rare decay π → e+e− to the light CP-odd Higgs A01 in the NMSSM. It is shown that the 3.3σ discrepancy between theoretical prediction and the recent KTeV measurement of B(π0 → e+e−) can be resolved with two narrow bands of NMSSM parameter space. For mA0 1 = 214.3 MeV, i.e., A01 as the state in Σ + → pμ+μ− decay found by HyperCP(More)