相关参考文献
注意:仅列出部分参考文献,下载原文获取全部文献信息。
Article
Astronomy & Astrophysics
Edward Shuryak et al.
Summary: This paper is the third on hadronic light-front wave functions. The authors derive a light-front Hamiltonian from first principles by utilizing the key features of the QCD vacuum at low resolution. In the first approximation, the obtained Hamiltonian yields the correct Regge trajectories and reveals transverse oscillator and longitudinal harmonic modes. The authors compare the spectrum of heavy quarkonia obtained from this Hamiltonian to that obtained from the usual Schrodinger equation in the rest frame. They also investigate the role of confinement and chiral symmetry breaking in the quark-antiquark sector for light quarks. Additionally, the authors study spin-spin and spin-orbit mixing, resulting in quadrupole moments of vector mesons. The extension of the 't Hooft interaction to the light front is shown for light mesons, addressing the U(1) problem and contributing to the understanding of the light pion. The derived light-front wave functions are then used to obtain relevant parton distribution functions, parton amplitudes, and low energy constants.
Article
Astronomy & Astrophysics
Edward Shuryak et al.
Summary: This paper is the second one on hadronic wave functions in the light-front formulation. The authors first investigate confinement effects using the classical Nambu-Gotto string with massive end points in the light-cone gauge. They derive the light-front Hamiltonian and propose a solution method based on basis function expansions. The paper then discusses the correlators of Wilson lines on the light front and develops an effective Hamiltonian including spin effects. Finally, the authors consider the instanton-induced interactions as a massless Goldstone mode on the light front.
Article
Astronomy & Astrophysics
Edward Shuryak et al.
Summary: This paper is the first in a series of papers that investigates the nonperturbative origin of central and spin-dependent forces between quarks. The focus is on meson spectroscopy in the center-of-mass frame. A new dense instanton ensemble model for the QCD vacuum is proposed to explain the interquark forces in mesons, ranging from quarkonia to heavy-light and light-light ones. The subsequent papers will demonstrate how to extend these interactions to the light front and derive the corresponding Hamiltonians, mesonic, and baryonic light front wave functions. The ultimate goal of this series is to bridge the gap between hadronic spectroscopy and partonic observables.
Article
Astronomy & Astrophysics
Edward Shuryak et al.
Summary: This paper is a continuation of our series of papers on quark models of hadronic structure on the light front. The main focus of this paper is the quantum-mechanical solution of the three-quark model Hamiltonian for baryons. By using a harmonic oscillator basis for the transverse directions in Jacobi coordinates, and solving the triangular cup potential exactly for the longitudinal momentum fractions xi, we calculate the masses and light-front wave functions for the flavor symmetric 3 thorn baryons bbb, ccc, sss, uuu.
Correction
Multidisciplinary Sciences
J. Dove et al.
Article
Astronomy & Astrophysics
Mary Alberg et al.
Summary: The pion cloud has significant importance in nuclear physics and various low-energy hadronic phenomena. This study argues that it is also expected to play a crucial role in lepton-proton deep inelastic scattering and Drell-Yan studies of proton structure. By calculating the effects of the pion cloud using the exact kinematics of the recent SeaQuest experiment, it has been demonstrated that there is a good agreement with the measurements. Hence, the universality of pionic effects is better understood.
Review
Physics, Nuclear
M. Yu Barabanov et al.
Summary: In the past decade, there has been a significant shift in understanding the internal structure of hadrons, with new theoretical techniques and experimental findings suggesting that soft quark+quark (diquark) correlations play a crucial role in hadron physics. These correlations are believed to be a necessary consequence of dynamical chiral symmetry breaking and may be critical for the formation of exotic tetra- and penta-quark hadrons.
PROGRESS IN PARTICLE AND NUCLEAR PHYSICS
(2021)
Article
Multidisciplinary Sciences
J. Dove et al.
Summary: Quark-antiquark annihilation measurements confirm the asymmetry between down and up antiquarks within protons. The majority of a proton's mass is in the form of quark kinetic and potential energy, as well as gluon energy from the strong force. The presence of more down antiquarks than up antiquarks in protons suggests the need for further study to understand this antimatter asymmetry.
Article
Physics, Nuclear
Ya Lu et al.
Summary: Accumulating evidence suggests that diquark correlations are important in hadron structure and interactions. Diquark distribution amplitudes are narrower and taller than mesons, influencing momentum distribution. These features could impact baryon distribution functions.
EUROPEAN PHYSICAL JOURNAL A
(2021)
Article
Astronomy & Astrophysics
Edward Shuryak et al.
Summary: The existing theory of hard exclusive QCD processes is based on two assumptions, but the characteristic momentum transfer Q is not large enough for this theory to be phenomenologically successful. In this work, the authors revisit one of the assumptions by calculating the instanton-induced contributions to the hard block, showing substantial impact on the form factors of mesons.
Article
Astronomy & Astrophysics
Tie-Jiun Hou et al.
Summary: The new parton distribution functions (PDFs) from the CTEQ-TEA collaboration are determined using a wide variety of high-precision Large Hadron Collider (LHC) data, in addition to other datasets. These PDFs are analyzed at next-to-leading order and next-to-next-to-leading order, with error sets determined using the Hessian method. The data sensitivity and preference towards quantities such as α(s)(m(Z)), and the gluon and strange quark distributions are quantified using fast PDF survey techniques.
Article
Astronomy & Astrophysics
Arthur Kock et al.
Article
Physics, Nuclear
Mary Alberg et al.
Article
Astronomy & Astrophysics
Edward Shuryak
Article
Physics, Nuclear
Shaoyang Jia et al.
Article
Physics, Multidisciplinary
Marek Karliner et al.
PHYSICAL REVIEW LETTERS
(2017)
Article
Astronomy & Astrophysics
Dmitri E. Kharzeev et al.
Article
Physics, Nuclear
Eduardo Basso et al.
Proceedings Paper
Physics, Multidisciplinary
Stanley J. Brodsky et al.
9TH JOINT INTERNATIONAL HADRON STRUCTURE '15 CONFERENCE
(2015)
Article
Astronomy & Astrophysics
Marek Karliner et al.
Article
Physics, Nuclear
I. A. Qattan et al.
Article
Astronomy & Astrophysics
Shu Lin et al.
Article
Physics, Particles & Fields
Y. Hatta et al.
JOURNAL OF HIGH ENERGY PHYSICS
(2008)
Article
Astronomy & Astrophysics
E Shuryak et al.
Article
Physics, Multidisciplinary
R Jaffe et al.
PHYSICAL REVIEW LETTERS
(2003)
Article
Astronomy & Astrophysics
P Faccioli et al.
Article
Astronomy & Astrophysics
RS Towell et al.
Article
Physics, Multidisciplinary
R Rapp et al.