[Clas_hadron] Abstract for Phi to Psi 2013

[Barry Ritchie]

I would suggest "partial-wave analyses", "center-of-mass energy $W$", and "FROzen Spin Target (FROST)". 

Barry G. Ritchie 
Vice Provost for Academic Personnel 
Arizona State University 
300 E. University Ave, Suite 420 
Tempe, AZ 85287-7805 
 
Phone: 480-965-7405 
Fax: 480-965-0785


-----Original Message-----
From: clas_hadron-bounces at jlab.org [mailto:clas_hadron-bounces at jlab.org] On Behalf Of dan watts
Sent: Monday, August 12, 2013 7:52 AM
To: clas_hadron at jlab.org
Subject: [Clas_hadron] Abstract for Phi to Psi 2013

Hi All,

Please find below an abstract for a talk I plan to give at Phi to Psi
2103 in Rome.

Any comments or suggestions would be much appreciated.

The conference website is

http://www.roma1.infn.it/phipsi13/

I would plan to send the abstract on Wednesday.

Many thanks,
Dan



Talk title: Meson photoproduction from the nucleon at CLAS

An extensive measurement programme of meson photoproduction from the nucleon has been obtained exploiting the CLAS detector in Hall-B of Jefferson Lab. The main aim of the programme is to provide high quality experimental data to constrain partial wave analyses and reaction models used to determine the spectrum and properties of nucleon resonances. Obtaining accurate and detailed information on this spectrum would provide valuable insights regarding the dynamics and interactions of the nucleon's constituents. Theoretical predictions of the resonance spectrum can be obtained from a range of approaches including constituent quark models and more recently from Lattice QCD. Despite these exciting advances in theory the properties and even existence of many nucleon resonances are poorly established experimentally.

The programme of measurements at CLAS will provide new, quality data on
  single and multiple meson photoproduction from the nucleon to better constrain the extraction of the spectrum. The experiments utilised linearly and circularly polarised photon beams on longitudinally and transversely polarised nucleon targets. The centre of mass energy, W, of the data set is 1.2 - 2.25 GeV, covering a large fraction of the resonance region. The Frozen spin target (FROST) and polarised H-D target used in the experiments will be discussed. Preliminary results for a range of single- and double- polarisation observables in meson photoproduction will also be presented.



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