134 citations · 586 across the 34 of their papers we have counts for
34 papers
Gravitational form factors in the perturbative limit
Qin-Tao Song, O. V. Teryaev, Shinsuke Yoshida
Generalized distribution amplitudes (GDAs) have attracted significant attention in recent years due to their connection with the energy-momentum tensor (EMT) form factors (FFs). Th…
Spin-orbit correlation and spatial distributions for spin-0 hadrons
Cédric Lorcé, Qin-Tao Song
The spin-orbit correlation in spin-0 hadrons can be investigated through the kinetic energy-momentum tensor form factor . We observe that the latter is also related…
Kinematical higher-twist corrections in : Neutral meson production
Bernard Pire, Qin-Tao Song
We carry out the calculation of kinematical higher-twist corrections to the cross section of up to twist 4, where is a scalar or pseudoscalar neutral meso…
Gravitational transverse-momentum distributions
Cédric Lorcé, Qin-Tao Song
We study the energy-momentum tensor of spin- and spin- hadrons in momentum space. We parametrize this object in terms of so-called gravitational transverse-momentum…
Kinematical higher-twist corrections in
Cédric Lorcé, Bernard Pire, Qin-Tao Song
We estimate kinematical higher-twist (up to twist 4) corrections to the amplitudes at large and small , where…
Mass spectra and decay properties of the higher excited mesons
Xue-Chao Feng, Zheng-Ya Li, De-Min Li +3
Although there are some experimental hints for the higher excited mesons, our knowledge of their properties is much poor theoretically. Based on our recent work about excited $…
Equation-of-motion and Lorentz-invariance relations for tensor-polarized parton distribution functions of spin-1 hadrons
S. Kumano, Qin-Tao Song
Structure functions of polarized spin-1 hadrons will be measured at various accelerator facilities in the near future. Recently, transverse-momentum-dependent and collinear parton…
Useful relations and sum rules for PDFs and multiparton distribution functions of spin-1 hadrons
S. Kumano, Qin-Tao Song
There are two types of polarizations in spin-1 hadrons, and they are vector and tensor polarizations. The latter is a unique one since it does not exist in the spin-1/2 proton. The…
TMDs for spin-1 hadrons
S. Kumano, Qin-Tao Song
Transverse-momentum-dependent parton distribution functions (TMDs) were investigated at the twists 3 and 4 for spin-1 hadrons in addition to the twist-2 ones. They were found by st…
Gluon transversity and TMDs for spin-1 hadrons
S. Kumano, Qin-Tao Song
We explain a gluon transversity, transverse-momentum-dependent parton distribution functions (TMDs), and parton distribution functions (PDFs) for spin-1 hadrons. The gluon transver…
Transverse-momentum-dependent parton distribution functions for spin-1 hadrons
S. Kumano, Qin-Tao Song
We show transverse-momentum-dependent parton distribution functions (TMDs) for spin-1 hadrons including twist-3 and 4 functions by taking the decomposition of a quark correlation f…
Possible studies of gluon transversity in the spin-1 deuteron at hadron-accelerator facilities
S. Kumano, Qin-Tao Song
Chiral-odd gluon transversity distribution could shed light on a new aspect of hadron physics. Although we had much progress recently on quark transversity distributions, there is…
Twist-2 relation and sum rule for tensor-polarized parton distribution functions of spin-1 hadrons
S. Kumano, Qin-Tao Song
Sum rules for structure functions and their twist-2 relations have important roles in constraining their magnitudes and dependencies and in studying higher-twist effects. The W…
Assignments of the , , and in the quark model
Zheng-Ya Li, De-Min Li, En Wang +2
Recently, the BESIII Collaboration reported a resonance with MeV and MeV in the process of . In addition, new m…
On the physics potential to study the gluon content of proton and deuteron at NICA SPD
A. Arbuzov, A. Bacchetta, M. Butenschoen +25
The Spin Physics Detector (SPD) is a future multipurpose experiment foreseen to run at the NICA collider, which is currently under construction at the Joint Institute for Nuclear R…
Transverse-momentum-dependent parton distribution functions up to twist 4 for spin-1 hadrons
S. Kumano, Qin-Tao Song
We show possible transverse-momentum-dependent parton distribution functions (TMDs) for spin-1 hadrons including twist-3 and 4 functions in addition to the leading twist-2 ones by…
Deuteron polarizations in the proton-deuteron Drell-Yan process for finding the gluon transversity
S. Kumano, Qin-Tao Song
The gluon transversity distribution in the deuteron is defined by the matrix element between linearly-polarized deuteron states, and it could be investigated in proton-deuteron col…
Gluon transversity in polarized proton-deuteron Drell-Yan process
S. Kumano, Qin-Tao Song
Nucleon spin structure functions have been investigated mainly by longitudinally-polarized ones for finding the origin of the nucleon spin. Other types of spin structure functions…
Hadron tomography for pion and its gravitational form factors
Qin-Tao Song
Generalized parton distributions (GPDs) are three-dimensional structure functions of hadrons, and they can reveal the orbital-angular-momentum contributions to the nucleon spin. Th…
Theoretical predictions on polarization asymmetry for Drell-Yan process with spin-one deuteron and tensor-polarized structure function
S. Kumano, Qin-Tao Song
We report recent theoretical progress on a polarization asymmetry in the proton-deuteron Drell-Yan process with a polarized-deuteron target and the tensor-polarized structure funct…
Hadron tomography in meson-pair production and gravitational form factors
S. Kumano, Qin-Tao Song, O. V. Teryaev
Generalized parton distributions (GPDs) are 3-dimensional (3D) structure functions for hadrons, and they are important for solving the proton spin puzzle including partonic orbital…
Generalized distribution amplitudes and gravitational form factors for pion
Qin-Tao Song
Generalized parton distributions (GPDs) have been investigated in the deeply virtual Compton scattering (DVCS) to solve the proton spin puzzle. On the other hand, the generalized d…
Hadron tomography and its application to gravitational radii of hadrons
S. Kumano, Qin-Tao Song, O. V. Teryaev
Hadron tomography has been investigated by three-dimensional structure functions, such as generalized parton distributions (GPDs) and generalized distribution amplitudes (GDAs). Th…
Tomography and gravitational radii for hadrons by three-dimensional structure functions
S. Kumano, Qin-Tao Song, O. V. Teryaev
Three-dimensional tomography of hadrons can be investigated by generalized parton distributions (GPDs), transverse-momentum-dependent parton distributions (TMDs), and generalized d…