Study of the quasi-two-body decays B^{0}_{s} \rightarrow \psi(3770)(\psi(3686))\pi^+\pi^- with perturbative QCD approach

In this note, we study the contributions from the S-wave resonances, f_{0}(980) and f_{0}(1500), to the B^{0}_{s}\rightarrow \psi(3770)\pi^ {+}\pi^{-} decay by introducing the S-wave \pi\pi distribution amplitudes within the framework of the perturbative QCD approach. Both resonant and nonresonant contributions are contained in the scalar form factor in the S-wave distribution amplitude \Phi^S_{\pi\pi}. Since the vector charmonium meson \psi(3770) is a S-D wave mixed state, we calculated the branching ratios of S-wave and D-wave respectively, and the results indicate that f_{0}(980) is the main contribution of the considered decay, and the branching ratio of the \psi(2S) mode is in good agreement with the experimental data. We also take the S-D mixed effect into the B^{0}_{s}\rightarrow \psi(3686)\pi^ {+}\pi^{-} decay. Our calculations show that the branching ratio of B^{0}_{s}\rightarrow \psi(3770)(\psi(3686))\pi^ {+}\pi^{-} can be at the order of 10^{-5}, which can be tested by the running LHC-b experiments.Comment: 10 pages, 3 figure

Statistics of Chaotic Resonances in an Optical Microcavity

Distributions of eigenmodes are widely concerned in both bounded and open systems. In the realm of chaos, counting resonances can characterize the underlying dynamics (regular vs. chaotic), and is often instrumental to identify classical-to-quantum correspondence. Here, we study, both theoretically and experimentally, the statistics of chaotic resonances in an optical microcavity with a mixed phase space of both regular and chaotic dynamics. Information on the number of chaotic modes is extracted by counting regular modes, which couple to the former via dynamical tunneling. The experimental data are in agreement with a known semiclassical prediction for the dependence of the number of chaotic resonances on the number of open channels, while they deviate significantly from a purely random-matrix-theory-based treatment, in general. We ascribe this result to the ballistic decay of the rays, which occurs within Ehrenfest time, and importantly, within the timescale of transient chaos. The present approach may provide a general tool for the statistical analysis of chaotic resonances in open systems.Comment: 5 pages, 5 figures, and a supplemental informatio

Resolving the species of the lichen genus Graphina Müll. Arg. in China, with some new combinations

In the framework of continuing studies on the Graphidaceae in China, the status of all taxa traditionally assigned to the genus Graphina reported from China are resolved in the present paper. Five new combinations are made, namely Diorygma isabellinum (Zahlbr.) Z.F. Jia & Lücking, comb. nov., Fissurina adscribens (Nyl.) Z.F. Jia & Lücking, comb. nov., Graphis lecanactiformis (Zahlbr.) Z.F. Jia & Lücking, comb. nov., Phaeographis haloniata (Zahlbr.) Z.F. Jia & Lücking, comb. nov. and Platygramme taiwanensis (J.C. Wei) Z.F. Jia & Lucking, comb. nov. Five new synonymies were found: Graphina olivascens Zahlbr. (= Fissurina adscribens), Graphina plumbicolor Zahlbr. (= Phaeographis haloniata), Graphina roridula Zahlbr. and its variety platypoda Zahlbr. [= Diorygma pachygraphum (Nyl.) Kalb, Staiger & Elix], and Graphina taiwanensis f. obscurata J.C. Wei (= Platygramme taiwanensis)

Resolving the species of the lichen genus Graphina Müll. Arg. in China, with some new combinations

In the framework of continuing studies on the Graphidaceae in China, the status of all taxa traditionally assigned to the genus Graphina reported from China are resolved in the present paper. Five new combinations are made, namely Diorygma isabellinum (Zahlbr.) Z.F. Jia & Lücking, comb. nov., Fissurina adscribens (Nyl.) Z.F. Jia & Lücking, comb. nov., Graphis lecanactiformis (Zahlbr.) Z.F. Jia & Lücking, comb. nov., Phaeographis haloniata (Zahlbr.) Z.F. Jia & Lücking, comb. nov. and Platygramme taiwanensis (J.C. Wei) Z.F. Jia & Lucking, comb. nov. Five new synonymies were found: Graphina olivascens Zahlbr. (= Fissurina adscribens), Graphina plumbicolor Zahlbr. (= Phaeographis haloniata), Graphina roridula Zahlbr. and its variety platypoda Zahlbr. [= Diorygma pachygraphum (Nyl.) Kalb, Staiger & Elix], and Graphina taiwanensis f. obscurata J.C. Wei (= Platygramme taiwanensis)

Resolving the genus Phaeographina Müll. Arg. in China

As part of ongoing studies of the lichen family Graphidaceae in China, the status of all taxa traditionally assigned to the genus Phaeographina reported from China is resolved in the present paper. Five new combinations are proposed: Phaeographis pleiospora (Zahlbr.) Z.F. Jia & Lücking, comb. nov., Platygramme elaeoplaca (Zahlbr.) Z.F. Jia & Lücking, comb. nov., Platythecium maximum (Groenh.) Z.F. Jia & Lücking, comb. nov., P. pyrrhochroa (Mont. & Bosch) Z.F. Jia & Lücking, comb. nov., and Sarcographina heterospora (Nyl.) Z.F. Jia & Lücking, comb. nov. Six new synonyms are established: Phaeographina callospora Zahlbr. [= Diorygma hieroglyphicum (Pers.) Staiger & Kalb], P. fukiensis Zahlbr. [= Pallidogramme chrysenteron (Mont.) Staiger, Kalb & Lücking], P. fukiensis var. substriata Zahlbr. [= Pallidogramme chrysenteron (Mont.) Staiger, Kalb & Lücking], P. granulans Zahlbr. [= Platygramme platyloma (Müll. Arg.) M. Nakan. & Kashiw.], P. pluvisilvarum Zahlbr. [= Graphis alpestris (Zahlbr.) Staiger], and P. valida Zahlbr. [= Thecographa prosiliens (Mont. & Bosch) A. Massal.]. Two additional synonyms are reported: Phaeographina subrigida (Nyl.) Zahlbr. is synonymized under Platygramme platyloma (Müll. Arg.) M. Nakan. & Kashiw., and Platythecium dimorphodes (Nyl.) Staiger under Platythecium pyrrhochroum (Mont. & Bosch) Z.F. Jia & Lücking

Gravitational-wave Emission from a Primordial Black Hole Inspiraling inside a Compact Star: a Novel Probe for Dense Matter Equation of State

Primordial black holes of planetary masses captured by compact stars are widely studied to constrain their composition fraction of dark matter. Such a capture may lead to an inspiral process and be detected through gravitational wave signals. In this Letter, we study the post-capture inspiral process by considering two different kinds of compact stars, i.e., strange stars and neutron stars. The dynamical equations are numerically solved and the gravitational wave emission is calculated. It is found that the Advanced LIGO can detect the inspiraling of a $10^{-5}$ solar mass primordial black hole at a distance of 10 kpc, while a Jovian-mass case can even be detected at megaparsecs. Promisingly, the next generation gravitational wave detectors can detect the cases of $10^{-5}$ solar mass primordial black holes up to $\sim1$ Mpc, and can detect Jovian-mass cases at several hundred megaparsecs. Moreover, the kilohertz gravitational wave signal shows significant differences for strange stars and neutron stars, potentially making it a novel probe to the dense matter equation of state.Comment: 7 figures, 15 pages, match the accepted version, accepted by ApJ