83 citations · 470 across the 22 of their papers we have counts for
23 papers
First determination of vector and tensor couplings from polarized photoproduction
Vanamali Shastry, Łukasz Bibrzycki, Vincent Mathieu +7
The couplings between hadrons encode the dynamics of quantum chromodynamics. While many couplings can be calculated from decay widths, in some cases the decays are kinematically fo…
Mechanisms of high energy polarized photoproduction of
Vanamali Shastry, Łukasz Bibrzycki, Vincent Mathieu +7
We present an amplitude analysis of high-energy polarized photoproduction of within a Regge exchange framework. A Regge amplitude model incorporating , , , a…
Deep Learning Exotic Hadrons
JPAC Collaboration, L. Ng, L. Bibrzycki +6
We perform the first model independent analysis of experimental data using Deep Neural Networks to determine the nature of an exotic hadron. Specifically, we study the line shape o…
Dalitz-plot decomposition for three-body decays
JPAC Collaboration, M. Mikhasenko, M. Albaladejo +9
We present a general formalism to write the decay amplitude for multibody reactions with explicit separation of the rotational degrees of freedom, which are well controlled by the…
On the Equivalence of Three-Particle Scattering Formalisms
A. W. Jackura, S. M. Dawid, C. Fernández-Ramírez +5
In recent years, different on-shell scattering formalisms have been proposed to be applied to both lattice QCD and infinite volume scattering processes. W…
Phenomenology of Relativistic Reaction Amplitudes within the Isobar Approximation
JPAC Collaboration, A. Jackura, C. Fernández-Ramírez +7
Further progress in hadron spectroscopy necessitates the phenomenological description of three particle reactions. We consider the isobar approximation, where the connected part of…
Meson resonances in forward-angle photoproduction
Ł. Bibrzycki, P. Bydžovský, R. Kamiński +1
Assuming that the photoproduction at forward angles and high energies is dominated by one pion exchange we calculate the mass distributions for low partial waves.…
Structure of Pion Photoproduction Amplitudes
V. Mathieu, J. Nys, C. Fernandez-Ramirez +5
We derive and apply the finite energy sum rules to pion photoproduction. We evaluate the low energy part of the sum rules using several state-of-the-art models. We show how the dif…
Global analysis of charge exchange meson production at high energies
JPAC Collaboration, J. Nys, A. N. Hiller Blin +7
Many experiments that are conducted to study the hadron spectrum rely on peripheral resonance production. Hereby, the rapidity gap allows the process to be viewed as an independent…
Khuri-Treiman equations for scattering
JPAC Collaboration, M. Albaladejo, N. Sherrill +7
The Khuri-Treiman formalism models the partial-wave expansion of a scattering amplitude as a sum of three individual truncated series, capturing the low-energy dynamics of the dire…
Features of Photoproduction at High Energies
J. Nys, V. Mathieu, C. Fernández-Ramírez +7
Hybrid/exotic meson spectroscopy searches at Jefferson Lab require the accurate theoretical description of the production mechanism in peripheral photoproduction. We develop a mode…
On the and Photoproduction Beam Asymmetry at High Energies
V. Mathieu, J. Nys, C. Fernández-Ramírez +5
We show that, in the Regge limit, beam asymmetries in and photoproduction are sensitive to hidden strangeness components. Under reasonable assumptions about the couplings…
Finite-Energy Sum Rules in Eta Photoproduction off the Nucleon
JPAC Collaboration, J. Nys, V. Mathieu +8
The reaction is studied in the high-energy regime (with photon lab energies GeV) using information from the resonance region through the use of…
Studying the P_c(4450) resonance in J/psi photoproduction off protons
A. N. Hiller Blin, C. Fernández-Ramírez, A. Jackura +4
A resonance-like structure, the P_c(4450), has recently been observed in the J/psi p spectrum by the LHCb collaboration. We discuss the feasibility of detecting this structure in J…
Neutral Pion Photoproduction in a Regge Model
V. Mathieu, G. Fox, A. P. Szczepaniak
The reaction is investigated in the energy range above the resonance region. The amplitudes include the leading Regge singularities in the cross-channel and correctl…
Dispersive calculation of complex Regge trajectories for the lightest resonances
J. A. Carrasco, J. Nebreda, J. R. Pelaez +1
We apply a recently developed dispersive formalism to calculate the Regge trajectories of the and mesons. Trajectories are calculated, not fitted to a fami…
Regge trajectories of ordinary and non-ordinary mesons from their scattering poles
J. Nebreda, J. A. Carrasco, J. T. Londergan +2
Our results on obtaining the Regge trajectory of a resonance from its pole in a scattering process and from analytic constraints in the complex angular momentum plane are presented…
Double-Regge Exchange Limit for the Reaction
M. Shi, I. V. Danilkin, C. Fernández-Ramírez +4
We apply the generalized Veneziano model ( model) in the double-Regge exchange limit to the reaction. Four different cases defined by the possible combinati…
The non-ordinary Regge behavior of the meson
J. R. Peláez, J. T. Londergan, J. Nebreda +1
We review how the Regge trajectory of an elastic resonance can be obtained just from its pole position and coupling, by means of a dispersive formalism. This allows to deal correct…
Non-ordinary nature of the f_0(500) resonance from its Regge trajectory
J. Nebreda, J. T. Londergan, J. R. Pelaez +1
We report our results on how to obtain the Regge trajectory of a resonance from its pole in a scattering process by imposing analytic constraints in the complex angular momentum pl…
Regge trajectory of the f_0(500) resonance from a dispersive connection to its pole
J. Nebreda, J. T. Londergan, J. R. Pelaez +1
We report here our results on how to obtain the Regge trajectory of a resonance from its pole in a scattering process by imposing analytic constraints in the complex angular moment…
Identification of non-ordinary mesons from the dispersive connection between their poles and their Regge trajectories: the f0(500) resonance
J. T. Londergan, J. Nebreda, J. R. Pelaez +1
We show how the Regge trajectory of a resonance can be obtained from its pole in a scattering process and analytic constraints in the complex angular momentum plane. The method is…
Theoretical model of the phi meson photoproduction amplitudes
L. Lesniak, A. P. Szczepaniak
P-wave amplitudes for elastic K+ K- photoproduction on hydrogen near the phi(1020) resonance have been derived in an analytical form and a partial wave decomposition of the amplitu…