E-89-039
- Spokespersons
- S. Dytman, K. Giovanetti
- Year
- 2007
- Abstract
- New cross sections for the reaction ep to e eta p are reported for total center of mass energy W=1.5-2.3 GeV and invariant squared momentum transfer Q2=0.13-3.3 GeV2. This large kinematic range allows extraction of important new information about response functions, photocouplings, and eta-N coupling strengths of baryon resonances. A sharp structure is seen at W ~ 1.7 GeV. The shape of the differential cross section is indicative of the presence of a P-wave resonance which persists to high Q2. Improved values are derived for the photon coupling amplitude for the S11(1535) resonance. This is the first consistent interpretation over a large range of Q2.
- Publication
-
- H. Denizli, J. Mueller, S. Dytman, M.L. Leber, R.D. Levine, J. Miles, K.Y. Kim, and CLAS Collaboration Q2 dependence of the S11(1535) Photocoupling and Evidence for a P-wave resonance in η electroproduction //
- Quantities
- σ dσ/dΩ AsymTT dσ/dΩT+ε·dσ/dΩL AsymLT
Measurements
ID | Quantity | Beam | Target | Final state |
Q2min, GeV2 |
Q2max, GeV2 |
Wmin, GeV |
Wmax, GeV |
---|---|---|---|---|---|---|---|---|
E102M301 | AsymTT | e | p | η p | 1.3 | 2.1 | 1.53 | 1.55 |
E102M302 | AsymTT | e | p | η p | 1.3 | 2.1 | 1.55 | 1.57 |
E102M303 | AsymTT | e | p | η p | 1.3 | 2.1 | 1.57 | 1.59 |
E102M304 | AsymTT | e | p | η p | 1.3 | 2.1 | 1.59 | 1.61 |
E102M305 | AsymTT | e | p | η p | 1.3 | 2.1 | 1.61 | 1.63 |
E102M306 | AsymTT | e | p | η p | 1.3 | 2.1 | 1.63 | 1.65 |
E102M307 | AsymTT | e | p | η p | 1.3 | 2.1 | 1.65 | 1.67 |
E102M308 | AsymTT | e | p | η p | 1.3 | 2.1 | 1.67 | 1.69 |
E102M309 | AsymTT | e | p | η p | 1.3 | 2.1 | 1.69 | 1.71 |
E102M310 | AsymTT | e | p | η p | 1.3 | 2.1 | 1.71 | 1.73 |
E102M311 | AsymTT | e | p | η p | 1.3 | 2.1 | 1.73 | 1.75 |
E102M312 | AsymTT | e | p | η p | 1.3 | 2.1 | 1.75 | 1.77 |
E102M313 | AsymTT | e | p | η p | 1.3 | 2.1 | 1.77 | 1.79 |
E102M314 | AsymTT | e | p | η p | 1.3 | 2.1 | 1.79 | 1.81 |
E102M315 | AsymTT | e | p | η p | 1.3 | 2.1 | 1.81 | 1.83 |
E102M316 | AsymTT | e | p | η p | 1.3 | 2.1 | 1.83 | 1.85 |
E102M317 | AsymTT | e | p | η p | 1.3 | 2.1 | 1.85 | 1.87 |
E102M318 | AsymTT | e | p | η p | 1.3 | 2.1 | 1.87 | 1.89 |
E102M319 | AsymTT | e | p | η p | 1.3 | 2.1 | 1.89 | 1.91 |
E102M320 | AsymTT | e | p | η p | 1.3 | 2.1 | 1.91 | 1.93 |
E102M321 | AsymTT | e | p | η p | 1.3 | 2.1 | 1.93 | 1.95 |
E102M322 | AsymTT | e | p | η p | 1.3 | 2.1 | 1.95 | 1.97 |
E102M323 | AsymTT | e | p | η p | 1.3 | 2.1 | 1.97 | 1.99 |
E102M324 | AsymTT | e | p | η p | 1.3 | 2.1 | 1.99 | 2.01 |
E102M325 | AsymTT | e | p | η p | 2.1 | 2.9 | 1.49 | 1.51 |
E102M326 | AsymTT | e | p | η p | 2.1 | 2.9 | 1.51 | 1.53 |
E102M327 | AsymTT | e | p | η p | 2.1 | 2.9 | 1.53 | 1.55 |
E102M328 | AsymTT | e | p | η p | 2.1 | 2.9 | 1.55 | 1.57 |
E102M329 | AsymTT | e | p | η p | 2.1 | 2.9 | 1.57 | 1.59 |
E102M330 | AsymTT | e | p | η p | 2.1 | 2.9 | 1.59 | 1.61 |
E102M331 | AsymTT | e | p | η p | 2.1 | 2.9 | 1.61 | 1.63 |
E102M332 | AsymTT | e | p | η p | 2.1 | 2.9 | 1.63 | 1.65 |
E102M333 | AsymTT | e | p | η p | 2.1 | 2.9 | 1.65 | 1.67 |
E102M334 | AsymTT | e | p | η p | 2.1 | 2.9 | 1.65 | 1.69 |
E102M335 | AsymTT | e | p | η p | 2.1 | 2.9 | 1.67 | 1.71 |
E102M336 | AsymTT | e | p | η p | 2.1 | 2.9 | 1.69 | 1.73 |
E102M337 | AsymTT | e | p | η p | 2.1 | 2.9 | 1.71 | 1.75 |
E102M338 | AsymTT | e | p | η p | 2.1 | 2.9 | 1.73 | 1.77 |
E102M339 | AsymTT | e | p | η p | 2.1 | 2.9 | 1.75 | 1.79 |
E102M340 | AsymTT | e | p | η p | 2.1 | 2.9 | 1.77 | 1.81 |
E102M341 | AsymTT | e | p | η p | 2.1 | 2.9 | 1.79 | 1.83 |
E102M342 | AsymTT | e | p | η p | 2.1 | 2.9 | 1.81 | 1.85 |
E102M343 | AsymTT | e | p | η p | 2.1 | 2.9 | 1.83 | 1.87 |
E102M344 | AsymTT | e | p | η p | 2.1 | 2.9 | 1.85 | 1.89 |
E102M345 | AsymTT | e | p | η p | 2.1 | 2.9 | 1.87 | 1.91 |
E102M346 | AsymTT | e | p | η p | 2.1 | 2.9 | 1.89 | 1.93 |