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Polarization observables in double neutral pion photoproduction
TAPS Collaboration, T. Seifen, J. Hartmann +73
Measurements of target asymmetries and double-polarization observables for the reaction are reported. The data were taken with the CBELSA/TAPS experiment at the ELS…
Observation of a structure in the M invariant mass distribution near 1700 MeV/ in the reaction
V. Metag, M. Nanova, J. Hartmann +74
The reaction has been studied with the CBELSA/TAPS detector at the electron stretcher accelerator ELSA in Bonn for incident photon energies from threshold…
Observation of the Cusp in the New Precise Beam Asymmetry Data for
TAPS Collaboration
Data on the beam asymmetry in the photoproduction of mesons off protons are reported for tagged photon energies from 1130 to 1790 MeV (mass range from 1748 MeV to …
New data on with polarized photons and protons and their implications for decays
J. Müller, J. Hartmann, M. Grüner +86
The polarization observables , and in photoproduction of mesons off protons are measured for photon energies from threshold to MeV (), 2280 MeV ($E…
Measurement of the Helicity Asymmetry for the reaction
TAPS collaboration, M. Gottschall, F. Afzal +66
A measurement of the double-polarization observable for the reaction is reported. The data were taken with the CBELSA/TAPS experiment at the ELSA facility in Bonn…
Feasibility study for the measurement of TDAs at PANDA in
PANDA Collaboration, B. Singh, W. Erni +508
The exclusive charmonium production process in annihilation with an associated meson is studied in the framework of QCD collinear factorizatio…
Momentum dependence of the imaginary part of the - and -nucleus optical potential
S. Friedrich, M. Nanova, V. Metag +57
The photoproduction of and mesons off carbon and niobium nuclei has been measured as a function of the meson momentum for incident photon energies of 1.2-2.9 GeV at…
Determination of the real part of the η'-Nb optical potential
M. Nanova, S. Friedrich, V. Metag +51
The excitation function and momentum distribution of η' mesons have been measured in photoproduction off 93^Nb in the energy range of 1.2-2.9 GeV. The experiment has been performed…
Measurements of Branching Ratios for Decays into Charged Particles
P. Adlarson, W. Augustyniak, W. Bardan +96
The WASA-at-COSY experiment has collected events with -mesons produced via the reaction at . Usi…
Photoproduction of ω Mesons off the Proton
A. Wilson, V. Crede, A. V. Anisovich +62
The differential cross sections and unpolarized spin-density matrix elements for the reaction were measured using the CBELSA/TAPS experiment for initial photon energies…
The polarization observables T, P, and H and their impact on multipoles
J. Hartmann, H. Dutz, A. V. Anisovich +76
Data on the polarization observables T, P, and H for the reaction are reported. Compared to earlier data from other experiments, our data are more precise and extend t…
Measurement of double polarisation asymmetries in -photoproduction
H. Eberhardt, T. C. Jude, H. Schmieden +72
The first measurements of the beam-target-helicity-asymmetries and in the photoproduction of -mesons off protons at the CBELSA/TAPS experiment are reported. () wa…
The N(1520) 3/2- helicity amplitudes from an energy-independent multipole analysis based on new polarization data on photoproduction of neutral pions
J. Hartmann, H. Dutz, A. V. Anisovich +74
New data on the polarization observables T, P, and H for the reaction are reported. The results are extracted from azimuthal asymmetries when a transversely polarized…
Experimental constraints on the -nucleus real potential
S. Friedrich, K. Makonyi, V. Metag +61
In a search for mesic states, the production of -mesons in coincidence with forward going protons has been studied in photon induced reactions on C for incident photo…
First measurement of the helicity asymmetry for in the resonance region
M. Gottschall, A. V. Anisovich, B. Bantes +64
The first measurement of the helicity dependence of the photoproduction cross section of single neutral pions off protons is reported for photon energies from 600 to 2300\,MeV, cov…
Determination of the η'-nucleus optical potential
M. Nanova, V. Metag, E. Ya. Paryev +59
The excitation function and momentum distribution of mesons have been measured in photon induced reactions on C in the energy range of 1250-2600 MeV. The experi…
Well-established nucleon resonances revisited by double-polarization measurements
A. Thiel, A. V. Anisovich, D. Bayadilov +64
The first measurement is reported of the double-polarization observable G in photoproduction of neutral pions off protons, covering the photon energy range from 620 to 1120 MeV and…
The WASA Detector Facility at CELSIUS
Chr. Bargholtz, M. Bashkanov, M. Berłowski +81
The WASA 4pi multidetector system, aimed at investigating light meson production in light ion collisions and eta meson rare decays at the CELSIUS storage ring in Uppsala is present…
Measurement of the Slope Parameter for the eta->3pi0 Decay in the pp->pp eta Reaction
M. Bashkanov, D. Bogoslawsky, H. Calén +41
The CELSIUS/WASA setup is used to measure the 3pi0 decay of eta mesons produced in pp interactions with beam kinetic energies of 1.36 and 1.45 GeV. The efficiency-corrected Dalitz…
The pp -> pp pi pi pi reaction channels in the threshold region
WASA Collaboration, C. Pauly, M. Jacewicz +42
The cross section for prompt neutral and charged three pion production in pp interactions was measured at excess energies in the range 160 - 217 MeV. That comprises the first measu…
Proposal for the Wide Angle Shower Apparatus (WASA) at COSY-Juelich - "WASA at COSY"
COSY Collaboration, B. Hoistad, J. Ritman
This document describes the physics case, the key experiments proposed and the technical solution for the project "WASA at COSY", which concerns the transfer of the WASA pellet-tar…