CLAS Physics Database

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Measurement E101M32

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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: 0.8 < cos(θ)_dcm < 0.9

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 :	0.5 — 1 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	Stat. error, mcb/sr	Syst. error, mcb/sr	Total error, mcb/sr
0.5219	0.051169	0.006968	0.000428	0.006981
0.53089	0.03856	0.004344	0.000455	0.004368
0.56565	0.034747	0.003877	0.000455	0.003904
0.58468	0.032078	0.003083	0.000101	0.003085
0.61007	0.031434	0.002578	5.8e-05	0.002579
0.63879	0.032949	0.002715	6.9e-05	0.002716
0.6605	0.030835	0.002992	6.6e-05	0.002993
0.68451	0.04184	0.004231	0.000114	0.004232
0.71006	0.032414	0.003343	3.8e-05	0.003343
0.73639	0.033118	0.003131	0.000202	0.003137
0.7631	0.02912	0.004478	0.001129	0.004618
0.78531	0.017879	0.002258	0.000108	0.002261
0.83751	0.011311	0.001209	8.3e-05	0.001212
0.86174	0.010266	0.001145	5.4e-05	0.001146
0.88706	0.006621	0.000926	0.000129	0.000935
0.91207	0.008174	0.000967	3.4e-05	0.000967
0.93544	0.005231	0.000951	0.000253	0.000984
0.96238	0.004354	0.000668	3e-05	0.000669
0.99083	0.00268	0.000654	0	0.000654
1.0154	0.002356	0.000544	0	0.000544