121645342
Local quark–hadron duality of nucleon spin structure functions with target mass corrections
Abstract Target mass corrections to nucleon spin structure functions are analyzed. Our results show that the corrections are important to the structure functions in a large x region. Moreover, they play a remarkable role to the local quark–hadron duality of the nucleon spin structure functions in three individual inelastic resonance production regions.
119119923
Explaining the anomalous $\Upsilon(5S)\to \chi_{bJ}\omega$ decays through the hadronic loop effect
In this work, we carry out the study on $\Upsilon(5S)\to \chi_{bJ}\omega$ ($J=0,1,2$) by considering the hadronic loop mechanism. Our results show that the Belle's preliminary data of the branching ratios for $\Upsilon(5S)\to \chi_{bJ}\omega$ can be well reproduced in our calculation with a common parameter range, which reflects the similarity among these $\Upsilon(5S)\to \chi_{bJ}\omega$ decays of concern.
118493030
Prediction of isoscalar charmoniumlike structures in the hidden-charm di-eta decays of higher charmonia
Considering the situation that a single chiral particle, η is initially emitted, we study the hidden-charm di-eta decays of the charmoniumlike state and the predicted charmonium , i.e., through the inetermediates and/or , and answer the important question of whether there exist isoscalar charmoniumlike structures in the and/or channels. Our results predict that there will be enhancement structures near , and thresholds for and near , and thresholds for in the distributions of , respectively. These peaks are accessible in future experiments, especially BESIII, Belle, BaBar, and the forthcoming BelleII.
118369333
Higher bottom and bottom-strange mesons
Motivated by the recent observation of the orbital excitation $B(5970)$ by the CDF Collaboration, we have performed a systematic study of the mass spectrum and strong decay patterns of the higher $B$ and ${B}_{s}$ mesons. Hopefully the present investigation may provide valuable clues to further experimental exploration of these intriguing excited heavy mesons.
123485885
Nucleon structure and two-photon exchange
The two-photon exchange corrections is crucial to reconcile the discrepancy of the form factor ratio caused by different measurement techniques. We estimate the two-photon exchange corrections to some electromagnetic observables of electron-nucleon scattering in a light cone quark model. The two-photon exchange corrections to the differential cross section are strongly dependent on the kinematic factor, which is consistent with the results from other model. We further extend the two-photon exchange corrections to time-like region and find the two-photon exchange corrections to differential cross section is very small in low center-of-mass energy region, but the corrections to polarization observables are relative large.
118457798
New structure around 3250 MeV in the baryonic B decay and the $D^{*}_{0}(2400)N$ molecular hadron
In this work, we first propose the isovector $nD^{*}_{0}(2400)^{0}$ molecular state to explain the enhancement structure around 3250 MeV (Xc(3250)0) in the $\varSigma_{c}^{++}\pi^{-}\pi^{-}$ invariant mass spectrum newly observed by the BaBar Collaboration. Under this molecular state configuration, both the analysis of the mass spectrum and the study of its dominant decay channel can well shed light on its resonance parameters measured by BaBar. Our investigation also shows that the isovector $nD^{*}_{0}(2400)^{0}$ molecular state can decay into $\varSigma_{c}^{++}\pi^{-}\pi^{-}$, which is consistent with experimental observation. These studies provide direct support to the isovector $nD^{*}_{0}(2400)^{0}$ molecular state assignment to Xc(3250)0.
119256430
Remnants, fermions’ tunnelling and effects of quantum gravity
A bstractThe remnants are investigated by fermions’ tunnelling from a 4-dimensional charged dilatonic black hole and a 5-dimensional black string. Based on the generalized uncertainty principle, effects of quantum gravity are taken into account. The quantum numbers of the emitted fermions affects the Hawking temperatures. For the black hole, the quantum gravity correction slows down the increase of the temperature, which leads to the remnant left in the evaporation. For the black string, the existence of the remnant is determined by the quantum gravity correction and effects of the extra compact dimension.