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Weak decays of doubly heavy baryons: multi-body decay channels

The newly-discovered \(\Xi _{cc}^{++}\) decays into the \( \Lambda _{c}^+ K^-\pi ^+\pi ^+\), but the experimental data has indicated that this decay is not saturated by any two-body intermediate state. In this work, we analyze the multi-body weak decays of doubly heavy baryons \(\Xi _{cc}\), \(\Omega _{cc}\), \(\Xi _{bc}\), \(\Omega _{bc}\), \(\Xi _{bb}\) and \(\Omega _{bb}\), in...

Weak decays of doubly heavy baryons: SU(3) analysis

Motivated by the recent LHCb observation of doubly charmed baryon \(\Xi _{cc}^{++}\) in the \(\Lambda _c^+ K^-\pi ^+\pi ^+\) final state, we analyze the weak decays of doubly heavy baryons \(\Xi _{cc}\), \(\Omega _{cc}\), \(\Xi _{bc}\), \(\Omega _{bc}\), \(\Xi _{bb}\) and \(\Omega _{bb}\) under the flavor SU(3) symmetry. The decay amplitudes for various semileptonic and...

Multi-objective energy management system for DC microgrids based on the maximum membership degree principle

With the increasing quantity of DC electrical equipment, DC microgrids have been paid more and more attention. This paper proposes an approach to multi-objective optimisation of an energy management system (EMS) for a DC microgrid that includes a hybrid energy storage system (HESS). The operating and maintenance cost and the loss of power supply probability (LPSP) of the system...

Optimal planning of energy storage system in active distribution system based on fuzzy multi-objective bi-level optimization

, where he is currently pursuing the Ph.D. degree in Electrical Engineering. Currently, his research interests include active distribution system planning and renewable energy system. Wei WANG is a

Relativistic corrections to light-cone distribution amplitudes of S-wave B c mesons and heavy quarkonia

In collinear factorization, light-cone distribution amplitudes (LCDAs) are key ingredients to calculate the production rate of a hadron in high energy exclusive processes. For a doubly-heavy meson system (such as B c , J/ψ, Y etc), the LCDAs contain perturbative scales that can be integrated out and then are re-factorized into products of perturbatively calculable distribution...

Weak decays of doubly heavy baryons: the \(1/2\rightarrow 1/2\) case

Eur. Phys. J. C Weak decays of doubly heavy baryons: the 1/2 → 1/2 case Wei Wang 1 Fu-Sheng Yu 0 Zhen-Xing Zhao 1 0 School of Nuclear Science and Technology, Lanzhou University , Lanzhou 730000

Chiral dynamics, S-wave contributions and angular analysis in \(D\rightarrow \pi \pi \ell \bar{\nu }\)

We present a theoretical analysis of the \(D^-\rightarrow \pi ^+\pi ^- \ell \bar{\nu }\) and \(\bar{D}^0\rightarrow \pi ^+\pi ^0 \ell \bar{\nu }\) decays. We construct a general angular distribution which can include arbitrary partial waves of \(\pi \pi \). Retaining the S-wave and P-wave contributions we study the branching ratios, forward–backward asymmetries and a few other...

Particle segmentation algorithm for flexible single particle reconstruction

As single particle cryo-electron microscopy has evolved to a new era of atomic resolution, sample heterogeneity still imposes a major limit to the resolution of many macromolecular complexes, especially those with continuous conformational flexibility. Here, we describe a particle segmentation algorithm towards solving structures of molecules composed of several parts that are...

Robust optimization for volume variation in timber processing

Volume variation is an uncertainty element which affects timber processing. We studied the volume variation of logs caused by quality defects in traditional timber processing and set up an optimization approach, using a robust optimization method. We used total number of acceptable boards produced to study the relationship between board thickness and raw material logs, using a...

Profiling of cardio-metabolic risk factors and medication utilisation among Type II diabetes patients in Ghana: a prospective cohort study

Background Type II diabetes mellitus (T2DM) is complicated by multiple cardio-metabolic risk factors. Controlling these factors requires lifestyle modifications alongside utilisation of anti-diabetic medications. Different glucose lowering [(biguanides (BIGs), sulfonylureas (SUAs), thiazolidinediones (TNZ)], lipid lowering (statins), and anti-hypertensive medicines [angiotensin...

Pre-computed Region Guardian Sets Based Reverse kNN Queries

all existed algorithms. Acknowledgements Research of Wei Wang is supported by ARC DP130103401 and DP130103405. Muhammad Aamir Cheema is supported by ARC DE130101002 and DP130103405. Open Access This

Production of \(a_1\) in heavy meson decays

Eur. Phys. J. C Production of a1 in heavy meson decays Wei Wang 0 1 Zhen-Xing Zhao 1 0 State Key Laboratory of Theoretical Physics, Institute of Theoretical Physics, Chinese Academy of Sciences

\(B_c\rightarrow B_{sJ}\) form factors and \(B_c\) decays into \(B_{sJ}\) in covariant light-front approach

We suggest to study the \(B_{s}\) and its excitations \(B_{sJ}\) in the \(B_c\) decays. We calculate the \(B_c\rightarrow B_{sJ}\) and \(B_c\rightarrow B_{J}\) form factors within the covariant light-front quark model, where the \(B_{sJ}\) and \(B_{J}\) denote an s-wave or p-wave \(\bar{b}s\) and \(\bar{b}d\) meson, respectively. The form factors at \(q^2=0\) are directly...

Correction to: Increased plasma N-glycome complexity is associated with higher risk of type 2 diabetes

The authors regret that Nish Chaturvedi’s name was spelt incorrectly in the author list. The details given in this correction are correct.

Radiative leptonic \(B_c\rightarrow \gamma \ell {\bar{\nu }}\) decay in effective field theory beyond leading order

We study the radiative leptonic \(B_c\rightarrow \gamma \ell {\bar{\nu }}\) decays in nonrelativistic QCD effective field theory, and we explore the contribution from a fast-moving photon. As a result, interactions between the photon and the heavy quarks can be integrated out, resulting in the factorization formula for the decay amplitude. We calculate not only the relevant short...

Conformal complex singlet extension of the Standard Model: scenario for dark matter and a second Higgs boson

We consider a conformal complex singlet extension of the Standard Model with a Higgs portal interaction. The global U(1) symmetry of the complex singlet can be either broken or unbroken and we study each scenario. In the unbroken case, the global U(1) symmetry protects the complex singlet from decaying, leading to an ideal cold dark matter candidate with approximately 100 GeV...

Trapping and Driving Individual Charged Micro-particles in Fluid with an Electrostatic Device

A variety of micro-tweezers techniques, such as optical tweezers, magnetic tweezers, and dielectrophoresis technique, have been applied intensively in precise characterization of micro/nanoparticles and bio-molecules. They have contributed remarkably in better understanding of working mechanisms of individual sub-cell organelles, proteins, and DNA. In this paper, we present a...