112 citations · 140 across the 10 of their papers we have counts for
11 papers
Electroweak Transitions of Hyperons and Charmed Baryons: Opportunities and Prospects
Patrik Adlarson, Constantia Alexandrou, Simone Bacchio +9
We present a phenomenology-driven overview of opportunities and outstanding challenges in baryon electroweak transitions, focusing on hyperon and charmed-baryon processes for which…
Dispersive Analysis of - and -Meson Form Factors with Chiral and Heavy-Quark Constraints
Simon Mutke, Leon A. Heuser, Ingrid Dax +2
We analyze the isovector vector form factors of , , , and mesons at low energies. We employ all constraints due to chiral and heavy-quark symmetry, and include the…
Kinetic Mixing and Axial Charges in the Parity-Doublet Model
Christian Kummer, Stefan Leupold, Lorenz von Smekal
The standard parity doublet model with its mass-mixing mechanism fails to describe the axial charge of the nucleon. While in the original Gell-Mann--Levy model, whi…
Electromagnetic isovector form factors of the transition from the to the nucleon
Di An, Stefan Leupold
Dispersion theory is used to provide a model-independent low-energy representation of the three electromagnetic isovector transition form factors . At low energie…
Electromagnetic form factors of the transition from the Delta to the nucleon
Moh Moh Aung, Stefan Leupold, Elisabetta Perotti +1
The low-energy electromagnetic form factors of the (1232)-to-nucleon transition are derived combining dispersion theory techniques and chiral perturbation theory. The form facto…
Goldberger-Treiman relation and Wu-type experiment in the decuplet sector
Magnus Bertilsson, Stefan Leupold
The leading-order chiral Lagrangian for the baryon octet and decuplet states coupled to Goldstone bosons and external sources contains six low-energy constants. Five of them are fa…
Light quark mass dependence of nucleon electromagnetic form factors in dispersively modified chiral perturbation theory
Fernando Alvarado, Di An, Luis Alvarez-Ruso +1
The nucleon isovector electromagnetic form factors are calculated up to next-to-next-to-leading order by combining relativistic chiral perturbation theory (ChPT) of pion, nucleon,…
Lifetime of the eta' meson at low temperature
E. Perotti, C. Niblaeus, S. Leupold
This work constitutes one part of an investigation of the low-temperature changes of the properties of the eta' meson. In turn these properties are strongly tied to the U(1)_A anom…
MesonNet Workshop on Meson Transition Form Factors
E. Czerwinski, S. Eidelman, C. Hanhart +5
The mini-proceedings of the Workshop on Meson Transition Form Factors held in Cracow from May 29th to 30th, 2012 introduce the meson transition form factor project with special emp…
Neutron stars and quark phases in the NJL model
K. Schertler, S. Leupold, J. Schaffner-Bielich
We study the possible existence of deconfined quark matter in the interior of neutron stars using the Nambu-Jona-Lasinio model to describe the quark phase. We find that typical neu…
Radial propagators and Wilson loops
Stefan Leupold, Heribert Weigert
We present a relation which connects the propagator in the radial (Fock-Schwinger) gauge with a gauge invariant Wilson loop. It is closely related to the well-known field strength…