Bottom Baryons

Recently CDF and D0 collaborations observed several bottom baryons. In this work we perform a systematic study of the masses of bottom baryons up to $1/m_Q$ in the framework of heavy quark effective field theory (HQET) using the QCD sum rule approach. The extracted chromo-magnetic splitting between the bottom baryon heavy doublet agrees well with the experimental data.Comment: 8 pages, 5 figures, 3 tables. More discussions and references adde

The Taylor-expansion method of moments for the particle system with bimodal distribution

This paper derives the multipoint Taylor expansion method of moments for the bimodal particle system. The collision effects are modeled by the internal and external coagulation terms. Simple theory and numerical tests are performed to prove the effect of the current model

A review of the open charm and open bottom systems

Since the discovery of the first charmed meson in 1976, many open-charm and open-bottom hadrons were observed. In 2003 two narrow charm-strange states $D_{s0}^*(2317)$ and $D_{s1}(2460)$ were discovered by the BaBar and CLEO Collaborations, respectively. After that, more excited heavy hadrons were reported. In this work, we review the experimental and theoretical progress in this field.Comment: Review accepted by Reports on Progress in Physics, 161 pages, 53 figures, 23 tables, more references added and review on heavy baryons adde

Digital Fluency and Social Media Use: An Empirical Investigation of WeChat Use

Social media has increasingly been used to deal with personal and professional issues. Past studies note that individuals of different digital fluency present distinct technology use behaviors. Yet, limited research has explored how digital fluency affects individuals’ motivations and the use of social media tools. Based on uses and gratifications theory and digital fluency literature, we develop a model to explore the relationship between digital fluency and social media use. We tested our model by analyzing 262 responses from WeChat users. Results show that digital natives (individuals of high digital fluency) tend to use WeChat to broaden social network while digital immigrants (individuals of low digital fluency) tend to enjoy WeChat use and to use WeChat to maintain ties with friends and fulfill their information needs. Our findings contribute to the literature by identifying the theoretical and practical roles of digital fluency in social media use