539 citations · 2.3k across the 62 of their papers we have counts for
50 papers · 1 filter
Pion-Nucleon Scattering in Baryon Chiral Perturbation Theory combined with the Expansion
D. Jayakodige, J. L. Goity
This work implements the combined BChPT and 1/Nc expansions for pion-nucleon elastic scattering. The effective theory is based on the baryon sector dynamical spin-flavor SU(4) symm…
Target normal single-spin asymmetry in inclusive electron-nucleon scattering in the 1/Nc expansion
Jose L. Goity, Christian Weiss
The target normal single-spin asymmetry in electron nucleon scattering is studied in the framework of the 1/Nc expansion of QCD, which allows for a rigorous description in the ener…
QCD angular momentum in transitions
June-Young Kim, Ho-Yeon Won, Jose L. Goity +1
transitions offer new possibilities for exploring the isovector component of the QCD quark angular momentum (AM) operator causing the flavor asymmetry…
Target normal single-spin asymmetry in inclusive electron-nucleon scattering in the 1/Nc expansion
Jose L. Goity, Christian Weiss, Cintia Willemyns
The target normal single-spin asymmetry in inclusive electron-nucleon scattering is studied in the low-energy regime that includes the resonance. The particular interest in the…
Target normal single-spin asymmetry in inclusive electron-nucleon scattering with two-photon exchange: Analysis using expansion
J. L. Goity, C. Weiss, C. T. Willemyns
We calculate the target normal single-spin asymmetry caused by two-photon exchange in inclusive electron-nucleon scattering in the resonance region. Our analysis uses the e…
The SU(3) Vector Currents in BChPT x 1/Nc
Ishara P. Fernando, Jose L. Goity
Baryon Chiral Perturbation Theory (BChPT) combined with the 1/Nc expansion is applied to the SU(3) vector currents. In terms of the xi power counting linking the low energy and 1/N…
BChPT in SU(3): a more effective theory
Ishara P. Fernando, Jose L. Goity
The chiral and expansions are combined in the description of low energy baryons. The combination furnishes a better behaved expansion, consequence of exactly eliminating la…
Baryon sigma terms in SU(3) BChPT x 1/Nc
Ishara P. Fernando, Jose L. Goity
ChPT and the expansion provide systematic frameworks for the strong interactions at low energy. A combined framework of both expansions has been developed and applied for b…
Baryon masses and σ-terms in SU(3) BChPT x 1/Nc
I. P. Fernando, J. M. Alarcon, J. L. Goity
Baryon masses and nucleon σ-terms are studied with the effective theory that combines the chiral and 1/Nc expansions for three flavors. In particular the connection between the dev…
Workshop on Excited Hyperons in QCD Thermodynamics at Freeze-Out (YSTAR2016) Mini-Proceedings
P. Alba, M. Amaryan, V. Begun +38
This Workshop brought top experts, researchers, postdocs, and students from high-energy heavy ion interactions, lattice QCD and hadronic physics communities together. YSTAR2016 dis…
Workshop on Physics with Neutral Kaon Beam at JLab (KL2016) Mini-Proceedings
M. Albrow, M. Amaryan, E. Chudakov +34
The KL2016 Workshop is following the Letter of Intent LoI12-15-001 "Physics Opportunities with Secondary KL beam at JLab" submitted to PAC43 with the main focus on the physics of e…
Heavy baryons in the large Nc limit
C. Albertus, E. Ruiz Arriola, I. P. Fernando +1
It is shown that in the large Nc limit heavy baryon masses can be estimated quantitatively in a 1/Nc expansion using the Hartree approximation. The results are compared with availa…
Baryon spin-flavor structure from an analysis of lattice QCD results of the baryon spectrum
Ishara P. Fernando, Jose L. Goity
The excited baryon masses are analyzed in the framework of the expansion using the available physical masses and also the masses obtained in lattice QCD for different quark…
The baryon vector current in the combined chiral and 1/Nc expansions
Ruben Flores-Mendieta, Jose L. Goity
The baryon vector current is computed at one-loop order in large-Nc baryon chiral perturbation theory, where Nc is the number of colors. Loop graphs with octet and decuplet interme…
QCD and strongly coupled gauge theories: challenges and perspectives
N. Brambilla, S. Eidelman, P. Foka +46
We highlight the progress, current status, and open challenges of QCD-driven physics, in theory and in experiment. We discuss how the strong interaction is intimately connected to…
The Nc dependencies of baryon masses: Analysis with Lattice QCD and Effective Theory
A. Calle Cordon, T. DeGrand, J. L. Goity
Baryon masses at varying values of Nc and light quark masses are studied with Lattice QCD and the results are analyzed in a low energy effective theory based on a combined framewor…
Global analysis of the negative parity non-strange baryons in the 1/Nc expansion
E. Gonzalez de Urreta, J. L. Goity, N. N. Scoccola
A global study of the negative parity non-strange baryon observables is performed in the frame- work of the 1/Nc expansion. Masses, partial decay widths and photo-couplings are sim…
QCD condensates and holographic Wilson loops for asymptotically AdS spaces
R. Carcasses Quevedo, J. L. Goity, R. Trinchero
The minimization of the Nambu-Goto action for a surface whose contour defines a circular Wilson loop of radius a placed at a finite value of the coordinate orthogonal to the bounda…
Baryon masses and axial charges in 1/Nc - ChPT
A. Calle Cordon, J. L. Goity
An analysis is presented of the ground state baryon's (N and Δ) masses and axial couplings in the combined 1/Nc and chiral expansions. Renormalization and alternative power countin…
Holographic models and the QCD trace anomaly
Jose L. Goity, Roberto C. Trinchero
Five dimensional dilaton models are considered as possible holographic duals of the pure gauge QCD vacuum. In the framework of these models, the QCD trace anomaly equation is consi…
Analysis of 56-plet positive parity baryon decays in the 1/Nc expansion
J. L. Goity, C. Jayalath, N. N. Scoccola
The partial decay widths of positive parity baryons belonging to 56-plets of SU(6) are analyzed in the framework of the 1/Nc expansion. The channels considered are those with emiss…
Analysis of Negative Parity Baryon Photoproduction Amplitudes in the Expansion
N. N. Scoccola, J. L. Goity, N. Matagne
We study the photoproduction helicity amplitudes of negative parity baryons in the context of the expansion of QCD. A complete analysis to next-to-leading order is carried…
Baryon Regge Trajectories in the Light of the Expansion
J. L. Goity, N. Matagne
We analyze Regge trajectories in terms of the expansion of QCD. Neglecting spin-orbit contributions to the large baryon mass operator, we consider the evolution of th…
Strong and Electromagnetic Mass Splittings in Heavy Mesons
Jose L. Goity, Chandana P. Jayalath
The contributions to heavy meson mass differences by the strong hyperfine interaction, the light quark masses and the electromagnetic interaction are obtained from the empirical va…