We discuss selected and important features of hadronic molecules as one promising forms exotic hadrons near thresholds. Using examples $D \bar D^*$ systems such $X(3872)$ $Z_c$, emphasis is put on the roles pion exchange interaction between them their coupling to intrinsic quark states. Thus emerge admixtures dominant long-range hadron structure short-range structure. For interaction, properties tensor force are analyzed in detail. More coupled channels supply more attractions, heavier...

<a:math xmlns:a="http://www.w3.org/1998/Math/MathML" display="inline"><a:msup><a:mrow><a:msub><a:mi>T</a:mi><a:mrow><a:mi>c</a:mi><a:mi>c</a:mi></a:mrow></a:msub><a:mo stretchy="false">(</a:mo><a:mi>c</a:mi><a:mi>c</a:mi><a:mover accent="true"><a:mi>u</a:mi><a:mo stretchy="false">¯</a:mo></a:mover><a:mover accent="true"><a:mi>d</a:mi><a:mo stretchy="false">¯</a:mo></a:mover><a:mo stretchy="false">)</a:mo></a:mrow><a:mo>+</a:mo></a:msup></a:math> has been reported by the LHCb experiment in...

The effects of B and P codoping on photoluminescence (PL) properties Si nanocrystals (nc-Si) are studied systematically. It is shown that the PL intensity codoped nc-Si always higher than either P- or B-doped nc-Si. sometimes even pure at relatively low concentrations annealing temperatures. By doping simultaneously to very high concentrations, peak shifts below band gap bulk Si.

Photoluminescence (PL) properties of heavily P- and B-doped Si nanocrystals (nc-Si) are studied. By simultaneously doping two types impurities, nc-Si exhibit strong PL at around 0.9 eV room temperature. The temperature quenching the is very small. Although peak energy close to that dangling-bond related previously observed, all observed properties, i.e., decay dynamics, degree quenching, etc., apparently different. transition between donor acceptor states in possible origin low-energy PL.

We study exotic mesons with double charm and bottom flavor ($|C|=|B|=2$), whose quark configuration is $\overline{\mathrm{Q}}\overline{\mathrm{Q}}\mathrm{qq}$. This has no annihilation process of antiquark, hence a genuinely state. take hadronic picture by considering the molecular states composed pair heavy mesons, such as DD, $\mathrm{D}{\mathrm{D}}^{*}$, ${\mathrm{D}}^{*}{\mathrm{D}}^{*}$ for flavor, BB, $\mathrm{B}{\mathrm{B}}^{*}$, ${\mathrm{B}}^{*}{\mathrm{B}}^{*}$ flavor. The...

We discuss the properties of hadronic systems containing one heavy quark in limit. The symmetry guarantees mass degeneracy states with total spin and parity $(j\ensuremath{-}1/2{)}^{P}$ $(j+1/2{)}^{P}$ $j\ensuremath{\ge}1/2$, because is decoupled from $j$ light components called brown muck. apply this idea to multihadron formulate general framework analyze their properties. demonstrate explicitly decomposition wave functions exotic hadron generated by one-boson-exchange potential. masses...

We investigate the hidden-charm pentaquarks as superpositions of $\Lambda_c \bar{D}^{(*)}$ and $\Sigma_c^{(*)} (isospin $I = 1/2$) meson-baryon channels coupled to a $uudc\bar{c}$ compact core by employing an interaction satisfying heavy quark chiral symmetries. Our model can consistently explain masses decay widths $P_c^+(4312)$, $P_c^+(4440)$ $P_c^+(4457)$ with dominant components $\Sigma_c \bar D$ D^\ast$ spin parity assignments $J^P 1/2^{-}, 3/2^{-}$ $1/2^{-}$, respectively. analyze...

In this paper, we investigate the hidden-charm pentaquarks as ${\overline{D}}^{(*)}{\mathrm{\ensuremath{\Lambda}}}_{\mathrm{c}}$ and ${\overline{D}}^{(*)}{\mathrm{\ensuremath{\Sigma}}}_{\mathrm{c}}^{(*)}$ molecules coupled to five-quark states. Furthermore, extend our calculations hidden-bottom sector. The coupling states is treated short range potential, where relative strength for meson-baryon channels determined by structure of We found that resonant and/or bound appear in both charm...

We reevaluate the electric dipole moment (EDM) of charged leptons in standard model using hadron effective models. find unexpectedly large EDM generated by level long-distance effect, ${d}_{e}=5.8\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}40}$, ${d}_{\ensuremath{\mu}}=1.4\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}38}$, and ${d}_{\ensuremath{\tau}}=\ensuremath{-}7.3\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}38}\text{ }\text{ }e\text{ }\mathrm{cm}$, with an...

We evaluate the electric dipole moment of charged leptons in standard model, where complex phase Cabibbo-Kobayashi-Maskawa matrix is only source CP violation. first prove that, at quark-gluon level, it suppressed by a factor $m_b^2 m_c^2 m_s^2$ all orders perturbation due to Glashow-Iliopoulos-Maiani mechanism. then calculate hadronic long distance contribution generated vector mesons one-loop level. The $|\Delta S|=1$ weak interaction derived using factorization, and strong modeled hidden...

When a series of chitin oligosaccharides was added into rice suspension culture, N-acetylchitohexaose, N-acetylchitopentaose, and N-acetylchitotetraose caused an increase in extracellular chitinase activity, mainly due to induction class III chitinase. In the case substantial activity observed at concentration higher than 0.01 micrograms/ml, maximum effect reached 1 microgram/ml. contrast, N-acetylchitotriose, N-acetylchitobiose, N-acetyl-D-glucosamine, chitohexaose (a chitosan...

We consider a uniform dipolar Fermi gas in two-dimensions (2D) where the dipole moments of fermions are aligned by an orientable external field. obtain ground state Hartree-Fock approximation and investigate RPA stability against density fluctuations finite momentum. It is shown that wave instability takes place broad region system stable collapse. also find critical temperature can be significant fraction for realistic polar molecules.

We study heavy baryons with an exotic flavor quantum number formed by a meson and nucleon ($\overline{D}N$ $BN$) through long range one pion exchange interaction. The bound state found previously in the $(I,{J}^{P})=(0,1/{2}^{\ensuremath{-}})$ channel survives when short interaction is included. In addition, we find resonant $(I,{J}^{P})=(0,3/{2}^{\ensuremath{-}})$ as Feshbach resonance predominated vector (${\overline{D}}^{*}N$ ${B}^{*}N$). that these states exist for charm heavier region.

We study heavy hadron spectroscopy near open bottom thresholds. employ $\mathrm{B}$ and ${\mathrm{B}}^{*}$ mesons as effective degrees of freedom the thresholds, consider meson exchange potentials between them. All possible composite states which can be constructed from are studied up to total angular momentum $J\ensuremath{\le}2$. consider, exotic states, isosinglet with ${J}^{PC}$ quantum numbers isotriplet states. solve numerically Schr\"odinger equation channel couplings for each state....

The recent observation of two hidden-charm pentaquark states by LHCb collaborations prompted us to investigate the exotic close $\overline{D}{\mathrm{\ensuremath{\Lambda}}}_{\mathrm{c}}$, ${\overline{D}}^{*}{\mathrm{\ensuremath{\Lambda}}}_{\mathrm{c}}$, $\overline{D}{\mathrm{\ensuremath{\Sigma}}}_{\mathrm{c}}$, $\overline{D}{\mathrm{\ensuremath{\Sigma}}}_{\mathrm{c}}^{*}$, ${\overline{D}}^{*}{\mathrm{\ensuremath{\Sigma}}}_{\mathrm{c}}$ and...

The recent discoveries and observations of pentaquarks tetraquarks by high-energy accelerator facilities have accumulated evidence the existence multiquark hadrons with heavy quarks, as discussed from early stage prediction quarks. We construct a coupled-channel model for hidden-charm strangeness whose quark content is $udsc\overline{c}$, ${P}_{cs}$, described ${\mathrm{\ensuremath{\Lambda}}}_{c}{\overline{D}}_{s}^{(*)}$,...

Photoluminescence (PL) properties of B and P codoped compensated Si nanocrystals were studied. The compensation carriers in was confirmed by the annihilation confined-carrier optical absorption infrared region. In PL spectra obtained under resonant excitation condition, samples did not exhibit structures related to momentum-conserving phonons, which clearly observed for pure nanocrystals. result strongly suggests that impurity nanocrystals, nonphonon quasidirect transition is dominant...

Magnetoelectric (ME) properties were investigated for an $XY$-like spin glass (SG) system, ${\mathrm{Ni}}_{x}{\mathrm{Mn}}_{1\ensuremath{-}x}{\mathrm{TiO}}_{3}$ with ilmenite structure. The ME effect is usually observed in systems peculiar couplings between a crystal lattice and magnetic order. Nonetheless, we found antisymmetric nonzero tensor elements below ${T}_{\mathrm{ME}}=8--10\text{ }\text{ }\mathrm{K}$ samples showing SG transitions. At ${T}_{\mathrm{ME}}$, no specific heat anomaly...

Very recently, the LHCb collaboration has reported new result about hidden-charm pentaquarks: $P_c(4312)$ near $\bar{D}Σ_c$ threshold, and $P_c(4440)$ $P_c(4457)$ $\bar{D}^*Σ_c$ threshold. We study heavy quark spin (HQS) multiplet structures of these newly $P_c$ pentaquarks under symmetry based on hadronic molecular picture. point out that is $J^P = 1/2^-$ member an HQS triplet, are 3/2^-$ triplet singlet with 3/2^-$. Namely, one belong to triplet. The structure predicts existence 5/2^-$...

We demonstrate high voltage HFET operation with suppression of gm dispersion and current collapse using an n-type thin GaN cap layer combined SiN passivation a recessed ohmic structure. Polarization-induced surface charge was controlled. Off state on-state breakdown voltages were 140 V 70 V. obtained power HFETs CW 35 without any heat sinking method.

We report inelastic neutron scattering measurements that provide a distinct dynamical ``fingerprint'' for the multiferroic ground state of 3.5% Ga-doped ${\text{CuFeO}}_{2}$. The complex is stabilized by displacement oxygen atoms, which contribute to coupling predicted in ``spin-driven'' model. By comparing observed and calculated spectrum spin excitations, we conclude magnetic distorted screw-type configuration with distribution turn angles.

We study heavy baryons with exotic flavor quantum numbers formed by a meson and nucleon ($\overline{D}N$ $BN$) positive parity. One-pion-exchange interaction, providing tensor force, dominates as long-range force to bind the $\overline{D}N$ $BN$ systems. In heavy-quark mass limit, pseudoscalar vector are degenerate binding mechanism analogous that in nuclear systems becomes important. As result, we obtain resonant states ${J}^{P}=1/{2}^{+}$, $3/{2}^{+}$, $5/{2}^{+}$ channels $I=0$.

Defensins comprise a family of mammalian cationic antimicrobial peptides. We investigated the anticancer effects human β-defensin-3 (hBD3) and its mouse homolog, Defb14, on lung cancer cells.We stained cells cultured after treatment with defensin peptide using propidium iodide Hoechst 33342. In vivo, Defb14 or vehicle was continuously infused near subcutaneous Lewis carcinoma cell tumor in mice. After 9-day infusion, weights excised tumors were determined.A 10-min hBD3 (70 μg/ml) induced...