Complete Experiments in Meson Photoproduction

2016 ◽  
Vol 40 ◽  
pp. 1660068 ◽  
Author(s):  
Yannick Wunderlich
Keyword(s):  
Partial Wave ◽  
Numerical Procedure ◽  
Partial Wave Analysis ◽  
Wave Analysis ◽  
Meson Photoproduction ◽  
Complete Experiment ◽  
Pseudoscalar Mesons ◽  
Full Production ◽  
First Results ◽  
Polarization Observables

The problem of the Complete Experiment for photoproduction of pseudoscalar mesons is treated. First the issue is reviewed briefly in the context of full production spin amplitudes as well as a truncated partial wave analysis (TPWA). Complete sets of polarization observables are given for both cases. Then, a numerical procedure for single energy TPWA fits is presented and first results are shown.

scholarly journals STUDIES ON A COMPLETE EXPERIMENT FOR SINGLE PSEUDOSCALAR MESON PHOTOPRODUCTION

2014 ◽  
Vol 26 ◽  
pp. 1460104
Author(s):  
◽  
YANNICK WUNDERLICH
Keyword(s):  
Classical Solution ◽  
Partial Wave ◽  
Pseudoscalar Meson ◽  
Partial Wave Analysis ◽  
Wave Analysis ◽  
Meson Photoproduction ◽  
Complete Experiment ◽  
Pseudoscalar Mesons ◽  
Polarization Observables

The complete experiment problem for photoproduction of single pseudoscalar mesons is reviewed briefly. If this problem is investigated in the context of a truncated partial wave analysis, the chance emerges to obtain a unique multipole solution measuring less polarization observables than demanded by the classical solution of the problem that is formulated in terms of spin amplitudes.

PHYSICS WITH HADRONIC PROBES AT COMPASS

2009 ◽  
Vol 24 (02n03) ◽  
pp. 245-254 ◽  
Author(s):  
◽  
BERNARD KETZER
Keyword(s):  
Partial Wave ◽  
Partial Wave Analysis ◽  
Wave Analysis ◽  
Pion Beam ◽  
Quantum Numbers ◽  
First Results ◽  
Significant Production

This paper describes the methods and goals of the spectroscopy programme of COMPASS using hadron beams, and reports on first results from a short pilot run using a 190 GeV/c pion beam, carried out in 2004. A partial wave analysis of the reaction π-N → π-π-π+ N' shows significant production of a state with spin-exotic quantum numbers JPC = 1-+ at 1.6 GeV/c2.

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