CLAS Physics Database

Your browser does not support JavaScript or JavaScript is turned off in your browser. It is strongly recommended to turn JavaScript on to view this page. Some features may not work if JavaScript is turned off.

Measurement E82M1

You are not logged in.

Experiment: E91-023 CLAS experiment, 1998

Spokespersons: R. Fatemi

Measurement comment: The measured photon asymmetry (A1+ETA*A2) for the Q**2 region 0.15 to 0.22 GeV**2 obtained with a beam energy of 2.6 GeV.

Publication:

R. Fatemi, A.V. Skabelin, V. D. Burkert, D. Crabb, R. DeVita, S. E. Kuhn, R. Minehart and CLAS Collaboration Measurement of the Spin Structure Functions in the Resonance Region for Q² from 0.15 to 1.6 GeV² // PRL 91 (2003) 222002

Quantity measured: A₁+ηA₂, dimensionless
Virtual photon asymmetry.
Beam: e, polarization: none
Target: p (Z=1, A=1), polarization: none
Final state: inclusive, polarization: none

Q² :	0.15 — 0.22 GeV²
W :	1.1 — 2.02 GeV
x_b :	0
E_beam :	2.6 GeV

Observable quantity measured (Y axis): A₁+ηA₂, dimensionless
Plot measurement data

Parameter (X axis): W, GeV

Click here to get data in text file, delimited with tabs.

Measured data:

W, GeV	A₁+ηA₂, dimensionless	Data errors, dimensionless
1.1	-0.636425	0.2488105
1.14	-0.5738366	0.2480233
1.18	-0.424861	0.1338218
1.26	-0.4104419	0.1044967
1.22	-0.4385285	0.1059728
1.26	-0.1067598	0.114071
1.3	-0.05651112	0.1262664
1.34	0.04135435	0.1075965
1.38	-0.07906306	0.1075389
1.42	0.007468469	0.08753687
1.46	0.003754059	0.0666566
1.5	0.01639453	0.06640349
1.54	0.01709433	0.0665958
1.58	0.02524298	0.06760236
1.62	0.02129971	0.05996184
1.66	-0.003676819	0.05478958
1.7	-0.01709835	0.05840805
1.74	0.0240343	0.05526209
1.78	0.06193202	0.05466131
1.82	-0.03451247	0.0512488
1.86	-0.02516174	0.05434954
1.9	-0.03242375	0.05442525
1.94	-0.03529964	0.06131104
1.98	-0.01774363	0.04349385
2.02	0.1015765	0.04302257