Gravitational form factors of hyperons in light-cone QCD

Abstract

The quark parts of the gravitational form factors of hyperons are calculated by means of the light-cone QCD sum rule. In the calculations, the distribution amplitudes (DAs) of $\Sigma$, $\Xi$ and $\Lambda$ together with the general forms of their interpolating currents as well as the quark part of the energy-momentum tensor current are used. These form factors can provide information on their mass and distributions of the angular momentum, energy and pressure inside the hyperons. It is obtained that the $Q^2$ dependencies of the hyperon gravitational form factors are nicely characterized by a multipole fit function. Using the fits of these form factors, some mechanical properties such as the mechanical radius of the hyperons and the pressure and energy distributions at the center of these particles are obtained. The obtained results can help us in better understanding of the internal structures of these baryons and the QCD as theory of the strong interaction.

arXiv comment13 Pages, 2 Figures and 5 Tables

References in corpus (62)

• Generalized parton distributions and strong forces inside nucleons and nuclei
• Forces inside hadrons: pressure, surface tension, mechanical radius, and all that
• Nucleon Generalized Parton Distributions from Full Lattice QCD
• Nucleon structure from mixed action calculations using 2+1 flavors of asqtad sea and domain wall valence fermions
• Revisiting the mechanical properties of the nucleon
• Moments of Nucleon Generalized Parton Distributions in Lattice QCD
• Generalized Parton Distributions from Lattice QCD
• Off-forward quark distributions of the nucleon in the large N_c limit
• Nucleon Form Factors in QCD
• Nucleon form-factors of the energy momentum tensor in the chiral quark-soliton model
• The nucleon form-factors of the energy momentum tensor in the Skyrme model
• Chiral Perturbation Theory and the first moments of the Generalized Parton Distriputions in a Nucleon
• A Lattice Study of Quark and Glue Momenta and Angular Momenta in the Nucleon
• Dispersive evaluation of the D-term form factor in deeply virtual Compton scattering
• Quark Orbital Angular Momentum from Lattice QCD
• Octet-baryon axial-vector charges and SU(3)-breaking effects in the semileptonic hyperon decays
• Polynomiality of unpolarized off-forward distribution functions and the D-term in the chiral quark-soliton model
• Leading Chiral Contributions to the Spin Structure of the Proton
• Energy-momentum tensor form factors of the nucleon in nuclear matter
• Chiral structure of nucleon gravitational form factors
• Light-cone distribution amplitudes of octet baryons from lattice QCD
• First Calculation of Hyperon Axial Couplings from Lattice QCD
• The generalized parton distribution function (E^u+E^d)(x,xi,t) of the nucleon in the chiral quark soliton model
• The pion mass dependence of the nucleon form-factors of the energy momentum tensor in the chiral quark-soliton model
• Nucleon gravitational form factors from instantons: forces between quark and gluon subsystems
• Insight into nucleon structure from lattice calculations of moments of parton and generalized parton distributions
• Gravitational form factors within light-cone sum rules at leading order
• Distribution amplitudes of $\Sigma$ and $\Lambda$ and their electromagnetic form factors
• On the D-term of the nucleon generalized parton distributions
• Generalized form factors, generalized parton distributions and the spin contents of the nucleon
• Nucleon's energy-momentum tensor form factors in light-cone QCD
• The generalized parton distribution functions and the nucleon spin sum rules in the chiral quark soliton model
• Octet baryon magnetic moments in light cone QCD sum rules
• Octet baryon electromagnetic form factors in a relativistic quark model
• Leading Chiral Corrections to the Nucleon Generalized Parton Distributions
• Chiral perturbation theory for nucleon generalized parton distributions
• Generalized parton distributions for the nucleon in chiral perturbation theory
• Strange Baryon Electromagnetic Form Factors and SU(3) Flavor Symmetry Breaking
• Energy-momentum tensor form factors of the nucleon within a $\pi$-$\rho$-$\omega$ soliton model
• In-medium modified energy-momentum tensor form factors of the nucleon within the framework of a $\pi$-$\rho$-$\omega$ soliton model
• Tensor charges and form factors of SU(3) baryons in the self-consistent SU(3) chiral quark-soliton model
• Magnetic Moments of Decuplet Baryons in Light Cone QCD
• Axial Charges of Octet Baryons in Two-flavor Lattice QCD
• Axial charges of octet and decuplet baryons
• Light-cone Distribution Amplitudes of Xi and their Applications
• Axial form factors of the octet baryons in a covariant quark model
• Electric Quadrupole and Magnetic Octupole Moments of the Light Decuplet Baryons Within Light Cone QCD Sum Rules
• Baryon Octet Electromagnetic Form Factors in a confining NJL model
• Hyperon Axial Charges in Two-Flavor Chiral Perturbation Theory
• Nucleon and nuclear structure through dilepton production
• Model-independent calculation of $SU(3{)}_f$ violation in baryon octet light-cone distribution amplitudes
• Isovector axial-vector form factors of octet baryons in QCD
• Chiral Corrections to Hyperon Axial Form Factors
• Gravitational transition form factors of $N(1535)\to N$
• Study of baryon octet electromagnetic form factors in perturbative chiral quark model
• Hyperon Electromagnetic Properties in Two-Flavor Chiral Perturbation Theory
• Electromagnetic form factors of octet baryons in QCD
• Modification of generalized vector form factors and transverse charge densities of the nucleon in nuclear matter
• Tensor form factors of the octet hyperons in QCD
• Electromagnetic transitions among octet and decuplet baryons in QCD
• Isovector Axial Vector Form Factors of Octet-Decuplet Hyperon Transition in QCD
• Analysis of ${\gamma }^{\ast }\Lambda \to {\Sigma }^0$ transition in QCD

Cited by in corpus (9)

• Effects of long-range forces on the D-term and the energy-momentum structure
• The gravitational form factor D(t) of the electron
• Gravitational form factors of the baryon octet with flavor SU(3) symmetry breaking
• 2D energy-momentum tensor distributions of nucleon in a large-$N_c$ quark model from ultra-relativistic to non-relativistic limit
• Gravitational transition form factors of $N\to \Delta$ via QCD light-cone sum rules
• Gravitational form factors of $N(1535)$ in QCD
• A Journey of Seeking Pressure and Forces in the Nucleon
• Energy-momentum tensor form factor D(t) of proton and neutron
• Non-diagonal DVCS and transition GPDs: A unified framework for spinless hadron case ${\gamma }^{\ast }\pi \to \gamma \pi \pi$