CLAS Physics Database

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Measurement E69M2

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Experiment: E89-032, 1999

Spokespersons: A. Stavinskiy

Publication:

A. V. Stavinsky, K. R. Mikhailov, R. Lednicky, A.V. Vlassov, and CLAS Collaboration Proton Source Size Measurements in the eA -> e'ppX Reaction // Phys.Rev.Let.93,192301(2004)

Quantity measured: R, dimensionless
Correlation function R(q)=N_r(q)/N_m(q), N_r and N_m are the numbers of proton pairs from the real events and those combined from protons taken from different events, respectively.
Beam: γ, polarization: none
Target: He4 (Z=2, A=4), polarization: none
Final state: ppX, polarization: none

W :	0.5 — 3.5 GeV
x_b :	0
E_γ :	0.5 — 3.5 GeV

Observable quantity measured (Y axis): R, dimensionless
Plot measurement data

Parameter (X axis): q, GeV/c

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

Measured data:

q, GeV/c	R, dimensionless	Data errors, dimensionless
0.015	1.175	0.919
0.025	5.477	2.565
0.035	6.399	2.132
0.045	6.741	1.607
0.055	5.383	0.951
0.065	4.144	0.553
0.075	3.55	0.367
0.085	2.732	0.226
0.095	2.599	0.18
0.105	2.104	0.129
0.115	1.832	0.1
0.125	1.626	0.086
0.135	1.61	0.078
0.145	1.301	0.063
0.155	1.263	0.058
0.165	1.285	0.056
0.175	1.146	0.049
0.185	1.112	0.046
0.195	1.008	0.041
0.205	0.993	0.039
0.215	0.971	0.037
0.225	0.949	0.035
0.235	0.989	0.035
0.245	0.994	0.034
0.255	0.983	0.033
0.265	0.974	0.032
0.275	0.986	0.031
0.285	0.969	0.03
0.295	0.977	0.029
0.305	0.98	0.029
0.315	0.925	0.027
0.325	0.978	0.027
0.335	0.979	0.027
0.345	0.965	0.026
0.355	1.111	0.028
0.365	1.029	0.026
0.375	0.977	0.024
0.385	1.023	0.025