CLAS Physics Database

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Measurement E101M77

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Experiment: g2a run CLAS data, 1999

Spokespersons: N/A

Experiment comment: Results are presented for 8 different binnings (4 E_γ binnings x 2 cos(θ)_{d_cm} binnings). Lower and upper limits of the E_γ and cos(θ)_{d_cm} bins are shown. Centroids of the E_γ bins are also shown.

Measurement comment: 0.7 < cos(θ)_dcm < 0.8

Publication:

Y. Ilieva, B. L. Berman, A. E. Kudryavtsev, I. I. Strakovsky, V. E. Tarasov, for the CLAS Collaboration Evidence of a backward peak in the γ + d → π⁰ + d cross section near the η threshold // Eur. Phys. J. A43, 261 (2010)

Quantity measured: dσ/dΩ, mcb/sr
Differential cross section.
Beam: γ, polarization: circular
Target: d (Z=1, A=2), polarization: none
Final state: π⁰d, polarization: none

E_γ :	0.475 — 1.275 GeV

Observable quantity measured (Y axis): dσ/dΩ, mcb/sr
Plot measurement data

Parameter (X axis): E_γ, GeV

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

Measured data:

E_γ, GeV	dσ/dΩ, mcb/sr	Data errors, mcb/sr	Systematic errors, mcb/sr	Full errors, mcb/sr
0.5219	0.065796	0.007112	0.000502	0.00713
0.54643	0.050935	0.003245	0.000274	0.003256
0.59836	0.034388	0.001957	0.000175	0.001965
0.64789	0.031287	0.001965	0.00012	0.001969
0.69826	0.034355	0.002584	9.9e-05	0.002586
0.74417	0.02901	0.002264	0.000131	0.002268
0.78862	0.019264	0.001943	6.1e-05	0.001944
0.8494	0.012501	0.000855	4.8e-05	0.000857
0.89955	0.009238	0.000662	4e-05	0.000663
0.95091	0.006954	0.000592	2.6e-05	0.000593
1.00283	0.005185	0.00048	2.8e-05	0.000481
1.05324	0.002943	0.000474	1.3e-05	0.000475
1.10114	0.002029	0.000285	3.8e-05	0.000288
1.1483	0.001616	0.000341	3.1e-05	0.000342
1.25355	0.001203	0.000278	3e-06	0.000278