scholarly journals Role of nucleon resonances on η-meson photoproduction

2020 ◽  
Author(s):  
D. Aprilina ◽  
A. Salam ◽  
I. Fachruddin
Keyword(s):  
Meson Photoproduction ◽  
Nucleon Resonances

scholarly journals K0SΣ0 photoproduction at the BGO-OD experiment

2020 ◽  
Vol 241 ◽  
pp. 01009
Author(s):  
Katrin Kohl ◽  
Stefan Alef ◽  
Patrick Bauer ◽  
Reinhard Beck ◽  
Alessandro Braghieri ◽  
...  
Keyword(s):  
Vector Meson ◽  
Momentum Transfer ◽  
Cross Section ◽  
Photon Beam ◽  
Bremsstrahlung Photon ◽  
Meson Photoproduction ◽  
Accelerator Facility ◽  
Transfer Processes

The BGO-OD experiment at the ELSA accelerator facility uses an energy tagged bremsstrahlung photon beam to investigate the excitation structure of the nucleon via meson photoproduction. The setup with a BGO calorimeter surrounding the target and an open dipole spectrometer covering the for ward region is ideally suited for investigating low momentum transfer processes, in particular in strangeness photoproduction. The associated photoproduction of K0S and hyperons is essential to understand the role of K* exchange mech anisms. A cusp-like structure observed in the yp → K0SΣ+ reaction at the K* threshold is described by models including dynamically generated resonances from vector meson-baryon interactions. Such interactions are pre dicted to give a peak like structure in K0SΣ0 photoproduction off the neutron. A very preliminary cross section is determined and compared to the prediction, the results appear to support the model

THE ROLE OF SPIN OBSERVABLES IN QUASI-FREE η MESON PHOTOPRODUCTION FROM NUCLEI

Spin 2004 ◽  
2005 ◽  
Author(s):  
B. I. S. van der VENTEL ◽  
G. C. HILLHOUSE ◽  
L. J. ABU-RADDAD
Keyword(s):  
Meson Photoproduction ◽  
Spin Observables

scholarly journals Role of spin-3/2 resonances η-meson photoproduction off nucleon

2019 ◽  
Author(s):  
N. Verawati ◽  
N. Septian ◽  
S. Clymton ◽  
A. Salam ◽  
I. Fachruddin
Keyword(s):  
Meson Photoproduction

scholarly journals Role of the low-lying nucleon resonances in the pp¯→ψη reaction

2020 ◽  
Vol 101 (11) ◽  
Author(s):  
Qin-Song Zhou ◽  
Jun-Zhang Wang ◽  
Ju-Jun Xie ◽  
Xiang Liu
Keyword(s):  
Nucleon Resonances

scholarly journals Study of nucleon resonances in the photoproduction γp → K*+Λ

2014 ◽  
Vol 29 ◽  
pp. 1460245
Author(s):  
Sang-Ho Kim ◽  
Atsushi Hosaka ◽  
Hyun-Chul Kim
Keyword(s):  
Theoretical Analysis ◽  
Differential Cross Section ◽  
Vector Meson ◽  
Cross Section ◽  
Differential Cross ◽  
Lagrangian Method ◽  
Proton Target ◽  
Meson Photoproduction ◽  
Nucleon Resonances ◽  
Effective Lagrangian

The mechanism of K* vector meson photoproduction off the proton target, γp → K*+Λ, is deeply studied by using an effective Lagrangian method. Based on the (t,s,u)-channel Born diagrams, we included higher resonance terms, i.e., S11(2090) and G17(2190), along with the D13(2080) and D15(2200), which are already considered in a previous theoretical analysis. The total and differential cross section are computed and we obtain quite precise results in comparison with the recent CLAS data.

scholarly journals Nucleon Spectroscopy with CLAS

2018 ◽  
Vol 172 ◽  
pp. 03004
Author(s):  
Steffen Strauch
Keyword(s):  
Experimental Studies ◽  
Photon Beams ◽  
Meson Photoproduction ◽  
Circularly Polarized ◽  
Jefferson Lab ◽  
Nucleon Resonances ◽  
Polarization Observables ◽  
Large Acceptance

Meson photoproduction is an important tool in the study of nucleon resonances. The spectrum of broad and overlapping nucleon excitations can be greatly clarified by use of polarization observables. The N* program at Jefferson Lab with the CEBAF Large Acceptance Spectrometer (CLAS) includes experimental studies with linearly- and circularly-polarized tagged-photon beams, longitudinally- and transversely-polarized nucleon targets, and recoil polarizations. Selected results from these experimental studies will be presented.

Sign in / Sign up

Export Citation Format

Share Document