Semileptonic decays of B*, ${B}_{s}^{* }$, and ${B}_{c}^{* }$ with the Bethe–Salpeter method

Abstract

In this paper we study the semileptonic decays of B * , B s *, and B c * by using the Bethe-Salpeter method with instantaneous approximation. Both the V Pl l n  -¯and V Vl l n  -¯cases are considered. The largest partial width of * n-¯channels have the largest branching ratio, which is of the order of 10 −6 .

An Insight into molecular structure and properties of flexible amorphous polymers: A molecular dynamics simulation approach

“…Previously, Faller et al discussed the local structure of transpolyisoprene (which is not a rubber), 15 but NR is selectively cis in configuration. However, Wang et al predicted the structure of cis-polyisoprene by X-ray diffraction 27 and our observation is close to their analysis.…”

“…Different bond lengths [where each bond length is depicted by a number in Figure 4(c)] were derived from the RDF of intramolecular carbon atoms [Figure 4(b)]. First two peaks (designated by 1 and 2) represented first adjacent pairs 27. The Peak 1 is attributed to C=C double bond, whereas the Peak 2 represents C-C single bond.…”

Cosmological fluids with logarithmic equation of state

“…Moreover, we shall assume that a non-trivial interaction between the dark energy and dark matter fluids may exist, and by conveniently choosing the EoS we shall investigate the dynamical behavior of the cosmological system in terms of an autonomous dynamical system. The motivation for using non-trivial interaction between the dark sectors arises mainly from the fact that dark energy dominates over dark matter at late times, and thus it is possible that the dark matter sector loses its energy feeding the dark energy sector and providing an alleviation to the coincidence problem [46][47][48][49][50][51][52][53][54][55][56][57][58][59][60][61][62][63]. The resulting picture of the coupled dark energy -dark matter system is quite interesting as we demonstrate, since for a class of parameter values the dynamical system has a stable asymptotic attractor, which corresponds to an accelerating phantom fixed point.…”

Computed insight into a peptide inhibitor preventing the induced fit mechanism of MurA enzyme from Pseudomonas aeruginosa

“…SIE has been utilized to estimate the binding free energy based on a MD trajectory of the protein/ligand complex. [51,52] Thus, the last 10 ns of MD trajectory, which represents 1,000 snapshots, were used to compute the binding free energies of the peptide-MurA and UNAG-MurA complexes. Furthermore, to analyze the relative influence of each residue on the binding free energy, we have carried out virtual alanine scanning, which provides an alternative to experimental mutagenesis toward identification of binding affinity hot spots at protein-protein interfaces.…”