Correction
Astronomy & Astrophysics
Ranl A. Briceno, Jozef J. Dudek, Robert G. Edwards, Christian J. Shultz, Christopher E. Thomas, David J. Wilson
Summary: A series of typographical mistakes were found in the equations shown in our published paper. In this erratum, we explain and correct these errors, which do not alter the numerical results presented.
Article
Physics, Multidisciplinary
Xu Feng, Luchang Jin, Michael Joseph Riberdy
Summary: In this study, the infinite volume reconstruction method is used to calculate the mass difference between charged and neutral pions. The hadronic tensor is computed using lattice QCD and combined with an analytic photon propagator. By performing a continuum extrapolation and examining finite-volume effects, the calculated pion mass splitting is found to agree well with experimental measurements.
PHYSICAL REVIEW LETTERS
(2022)
Article
Physics, Multidisciplinary
Jun Hua, Min-Huan Chu, Peng Sun, Wei Wang, Ji Xu, Yi-Bo Yang, Jian-Hui Zhang, Qi-An Zhang
Summary: This study presents the first lattice QCD calculation of the distribution amplitudes of longitudinally and transversely polarized vector mesons K* and phi using large momentum effective theory. The results show that while the longitudinal distribution amplitudes tend to be close to the asymptotic form, the transverse ones deviate rather significantly from the asymptotic form. The final results provide crucial ab initio theory inputs for analyzing pertinent exclusive processes.
PHYSICAL REVIEW LETTERS
(2021)
Article
Physics, Multidisciplinary
Zheng-Yang Li, Yan-Qing Ma, Jian-Wei Qiu
Summary: This study introduces complete next-to-next-to-leading-order coefficient functions to match flavor nonsinglct quark correlation functions in position space to parton distribution functions (PDFs), making predictions for valence-quark correlation functions. By performing Fourier transformation, matching coefficients for corresponding quasi-PDFs and pseudo-PDFs are obtained. The calculations can be generalized to evaluate matching coefficients for sea-quark and gluon correlation functions.
PHYSICAL REVIEW LETTERS
(2021)
Article
Astronomy & Astrophysics
T. G. Khunjua, K. G. Klimenko, R. N. Zhokhov
Summary: This paper investigates the influence of chiral chemical potential on the phenomenon of diquark condensation and phase structure of dense quark matter. The results show that the chiral chemical potential exhibits distinct features compared to other chemical potentials.
Article
Physics, Multidisciplinary
Jeremy R. Green, Andrew D. Hanlon, Parikshit M. Junnarkar, Hartmut Wittig
Summary: This study presents the first exploration of baryon-baryon interactions in the continuum limit of lattice QCD, revealing unexpectedly large lattice artifacts impacting the binding energy. By applying variational methods and Luscher's finite-volume quantization conditions, scattering phase shifts can be determined from the spectrum, leading to an estimate of the binding energy of the H dibaryon in three-flavor QCD.
PHYSICAL REVIEW LETTERS
(2021)
Article
Astronomy & Astrophysics
Hsiang-nan Li
Summary: The study derives the dependence of the leading-twist pion light-cone distribution amplitude on a parton momentum fraction x by solving the dispersion relations for the moments. The results are convergent and stable in the Gegenbauer expansion, and can be further improved systematically by including higher-order and higher-power terms in the operator product expansion.
Article
Astronomy & Astrophysics
Chien-Yeah Seng, Vincenzo Cirigliano, Xu Feng, Mikhail Gorchtein, Luchang Jin, Gerald A. Miller
Summary: Recent estimates suggest that the strong isospin-symmetry breaking (ISB) corrections to the Fermi matrix element in free neutron decay may be one order of magnitude larger than the naive estimate based on a theorem. To investigate this claim, we derive a general expression for the leading ISB correction to hadronic Fermi matrix elements, which can be computed from first principles. Our formalism opens up the possibility of determining this correction in the neutron sector with fully-controlled theory uncertainties.
Article
Physics, Multidisciplinary
Chaitra Kalmahalli Guruswamy, Ulf-G Meissner, Chien-Yeah Seng
Summary: Based on the analysis of the contributions from connected and disconnected contraction diagrams in the pion-kaon scattering amplitude, this study provides the first determination of a free low-energy constant L-0(r) in SU (4 vertical bar 1) Partially-Quenched Chiral Perturbation theory. The determination is obtained using data from the Extended Twisted Mass collaboration, and the uncertainties are derived from various theoretical and experimental factors.
COMMUNICATIONS IN THEORETICAL PHYSICS
(2022)
Article
Astronomy & Astrophysics
Alejandro Ayala, Aritra Bandyopadhyay, Ricardo L. S. Farias, L. A. Hernandez, Jose Luis Hernandez
Summary: We study the phase structure of isospin asymmetric matter at zero temperature using the two-flavor Linear Sigma Model with quarks. The mean field chiral and isospin condensates are provided by meson degrees of freedom, and the effective potential is computed by accounting for constituent quark fluctuations at one-loop order. The results show that the model can effectively describe the evolution of condensates as well as the pressure, energy, isospin densities, and sound velocity as a function of the isospin chemical potential.
Article
Astronomy & Astrophysics
Arthur Kock, Ismail Zahed
Summary: In the context of the random instanton vacuum (RIV), the pion and kaon distribution amplitudes up to twist-3 were discussed. Quasipion and quasikaon distributions were explicitly constructed in the RIV, and analyzed at leading order in the diluteness factor. The distribution amplitudes were obtained from the large momentum limit, and the higher resolution results were discussed using QCD evolution and compared to asymptotic limits and lattice results.
Article
Astronomy & Astrophysics
Tao Zhong, Zhi-Hao Zhu, Hai-Bing Fu, Xing-Gang Wu, Tao Huang
Summary: In this paper, the pion leading-twist distribution amplitude (DA) phi(2;pi)(x, mu) was studied by improving the traditional light-cone harmonic oscillator model. The model parameters were constrained by calculating its moments in the framework of the QCD background field theory. The resulting behavior of the twist-2 pion DA is closer to the AdS/QCD and lattice results, but narrower than that obtained using the Dyson-Schwinger equation.
Article
Astronomy & Astrophysics
Colin Egerer, Christos Kallidonis, Joseph Karpie, Nikhil Karthik, Christopher J. Monahan, Wayne Morris, Kostas Orginos, Anatoly Radyushkin, Eloy Romero, Raza Sabbir Sufian, Savvas Zafeiropoulos
Summary: We determined the nonsinglet transversity parton distribution function (PDF) of the nucleon using lattice quantum chromodynamics. By analyzing the short-distance behavior and using the matching coefficients, we extracted the transversity PDF and studied its x-dependence through an expansion in Jacobi polynomials. Comparing our estimate with global fit results based on single transverse spin asymmetry, we found that the nucleon sea is isospin symmetric with respect to transversity.
Article
Physics, Particles & Fields
Joseph Karpie, Kostas Orginos, Anatoly Radyushkin, Savvas Zafeiropoulos
Summary: In this study, continuum limit results for the unpolarized parton distribution function of the nucleon in lattice QCD are presented. The pseudo-PDF approach with Short Distance Factorization was utilized for the first time, and findings were compared with phenomenological determinations. The sGEVP technique was employed to optimize control over excited state contamination in calculations.
JOURNAL OF HIGH ENERGY PHYSICS
(2021)
Article
Astronomy & Astrophysics
Huey-Wen Lin
Summary: This study presents the lattice QCD calculation of the x-dependent pion valence-quark generalized parton distribution (GPD) directly at physical pion mass. The results show consistent agreement with past lattice QCD and experimental determinations, and also predict higher GPD moments.
Article
Physics, Multidisciplinary
Kyle D. Bednar, Ian C. Cloet, Peter C. Tandy
PHYSICAL REVIEW LETTERS
(2020)
Article
Instruments & Instrumentation
M. Jadhav, W. Armstrong, I. Cloet, S. Joosten, S. M. Mazza, J. Metcalfe, Z. -E. Meziani, H. F. -W. Sadrozinski, B. Schumm, A. Seiden
Summary: This study demonstrates the feasibility of achieving 10 ps timing resolution for particle identification in the TOPSiDE detector concept, utilizing LGADs with thicknesses of 35 µm and 50 µm. The performance of gain and timing response is evaluated under different operating conditions, with the best timing resolution achieved using three planes of 35 µm thick LGADs at -30 degrees C.
JOURNAL OF INSTRUMENTATION
(2021)
Article
Physics, Nuclear
X. G. Wang, W. Bentz, I. C. Cloet, A. W. Thomas
Summary: We investigate the gluonic structure of nuclei and find considerable nuclear modifications of the gluon distributions in nuclear matter.
JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS
(2022)
Article
Astronomy & Astrophysics
Adam Freese, Ian C. Cloet, Peter C. Tandy
Summary: The study elucidates the importance of the interrelation between quark and gluon parton densities at the intrinsic scale in explaining mass generation and nucleon structure. By describing the relationship between quark and gluon dressing, the research provides insights into the observables related to the quark-gluon structure within hadrons.
Article
Physics, Nuclear
Wolfgang Bentz, Ian C. Cloet
Summary: In the first part, we study the symmetry energy and its slope parameter L for nuclear matter, and derive an exact relation between them. In the second part, we discuss the general structure of three-particle interactions in nuclear matter and analyze their connections to other theories.
Article
Physics, Nuclear
Caroline S. R. Costa, Adam Freese, Ian C. Cloet, Bruno El-Bennich, Gastao Krein, Peter C. Tandy
Summary: A quark target model incorporating intrinsic glue into effective low-energy QCD models is constructed to ensure gauge invariance of observables. Comparing covariant and light cone gauges reveals the importance of Wilson line contributions in covariant gauges. Ultimately, this research highlights the significance of accounting for Wilson line contributions in quantum correlation function calculations in covariant gauges.
Article
Astronomy & Astrophysics
Constantia Alexandrou, Simone Bacchio, Ian Cloet, Martha Constantinou, Kyriakos Hadjiyiannakou, Giannis Koutsou, Colin Lauer
Summary: This study presents a calculation of the pion and kaon Mellin moments extracted directly in lattice QCD using a three-derivative local operator. The results are converted to the MS scheme and evolved at a scale of 2 GeV with three-loop expressions in perturbation theory. Excited states contamination is evaluated to determine the systematic error and additional analyses are performed to reconstruct the x-dependence of the pion and kaon PDFs.
Article
Physics, Nuclear
Adam Freese, Ian C. Cloet
Summary: In this study, the leading-twist helicity-dependent generalized parton distributions of the proton were calculated using the NJL model in QCD, leading to the determination of the proton's spin decomposition. The inclusion of multiple species of diquarks was found to significantly impact the flavor decomposition, emphasizing the importance of understanding the internal structure of these dynamical diquark correlations for the mechanical stability of the proton. The results revealed the intrinsic spin and orbital angular momentum of up and down quarks, as well as the total angular momentum of gluons, showing that the down quark carries almost no total angular momentum due to cancellations between spin and orbital contributions. Comparisons were made with lattice QCD calculations.
Article
Astronomy & Astrophysics
Constantia Alexandrou, Simone Bacchio, Ian Cloet, Martha Constantinou, Kyriakos Hadjiyiannakou, Giannis Koutsou, Colin Lauer
Summary: The study calculates the quark momentum fractions and third Mellin moments for π mesons and kaons, obtaining results for these particles. By analyzing light quarks, strange quarks, and charm quarks, differences in the behavior of these quarks in different particles are demonstrated.
Article
Physics, Nuclear
Takehiro Tanimoto, Wolfgang Bentz, Ian C. Cloet
Article
Astronomy & Astrophysics
Chao Shi, Kyle Bednar, Ian C. Cloet, Adam Freese
Article
Physics, Nuclear
Adam Freese, Ian C. Cloet
