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Measurement E8M21

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Experiment: E89-038 CLAS experiment, 1999

Spokespersons: V. Burkert, R. Minehart

Experiment comment: Beam energy 1.515 GeV. Global 5.8% scaling systematic uncertainty for all data points

Measurement comment: Global 5.8% scaling systematic uncertainty

Publication:

Quantity measured: dσ/dΩ, mcbn/sterad
Differential cross section.
Beam: e, polarization: none
Target: p (Z=1, A=1), polarization: none
Final state: π+n, polarization: none

Q2 : 0.25 — 0.35 GeV2
W : 1.5 — 1.52 GeV
Ebeam : 1.515 GeV

Select data slice:
θπ = deg

Fit φ dependence:

 Observable quantity measured (Y axis): dσ/dΩ, mcbn/sterad
Plot measurement data

Parameter (X axis): φπ, deg

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

Click here to get calculated fit coefficients in text file, delimited with tabs.

Measured data:

θπ,
deg 		φπ,
deg 		dσ/dΩ,
mcbn/sterad 		Data errors,
mcbn/sterad 		Systematic errors,
mcbn/sterad
7.5 15 13.9 1.486 1.06
7.5 45 11.85 1.598 1.007
7.5 75 11.33 1.592 1.005
7.5 105 10.11 1.012 0.9415
7.5 135 8.175 0.7737 0.9112
7.5 165 8.909 0.7968 0.9301
7.5 195 9.5 0.8515 0.9174
7.5 225 9.765 0.9108 0.9664
7.5 255 12.13 1.273 0.9644
7.5 285 17.42 2.677 1.089
7.5 315 13.43 2.083 1.02
7.5 345 14.83 1.664 1.106
22.5 75 14.04 2.752 0.8603
22.5 105 9.742 1.522 0.7961
22.5 135 6.713 0.5556 0.7339
22.5 165 5.75 0.3983 0.7134
22.5 195 5.825 0.3898 0.7268
22.5 225 6.905 0.5893 0.7379
22.5 255 9.167 1.628 0.7974
22.5 285 7.782 1.458 0.7689
37.5 75 9.35 0.4056 0.6948
37.5 105 7.582 0.7596 0.6533
37.5 135 5.521 0.8274 0.6165
37.5 225 7.155 1.135 0.6515
37.5 255 8.411 0.6148 0.6814
37.5 285 8.781 0.3559 0.6832
52.5 45 5.862 0.8379 0.4992
52.5 75 7.185 0.3761 0.5197
52.5 105 8.687 1.199 0.5514
52.5 165 3.254 0.2877 0.4463
52.5 195 2.808 0.2551 0.4412
52.5 255 7.592 0.9833 0.5531
52.5 285 7.165 0.3456 0.5322
52.5 315 5.725 0.7819 0.4863
67.5 15 2.013 0.2756 0.2849
67.5 45 4.149 0.2464 0.3235
67.5 75 5.282 0.6236 0.4295
67.5 105 6.934 1.168 0.3873
67.5 135 4.085 0.2585 0.328
67.5 165 2.613 0.1452 0.3001
67.5 195 2.465 0.1393 0.2984
67.5 225 4.509 0.2822 0.3518
67.5 255 6.314 0.3616 0.4035
67.5 315 4.337 0.2643 0.3308
67.5 345 2.408 0.3878 0.2926
82.5 45 3.422 0.3638 0.3186
82.5 75 5.561 0.4013 0.3788
82.5 105 5.468 0.2221 0.3784
82.5 135 4.058 0.2426 0.3386
82.5 165 2.333 0.1407 0.305
82.5 195 2.209 0.1354 0.2987
82.5 225 3.746 0.2453 0.3412
82.5 255 6.332 0.2467 0.4096
82.5 285 5.874 0.4446 0.3693
82.5 315 3.792 0.5321 0.3266
97.5 15 1.407 0.1584 0.2446
97.5 45 3.184 0.1786 0.2769
97.5 75 5.523 0.3346 0.3434
97.5 105 5.32 0.2312 0.3367
97.5 135 3.714 0.2635 0.2987
97.5 165 2.478 0.2105 0.2618
97.5 195 2.297 0.1731 0.2688
97.5 225 4.093 0.2651 0.3141
97.5 255 5.333 0.2443 0.3518
97.5 285 5.308 0.3298 0.338
97.5 315 3.361 0.1964 0.2805
97.5 345 1.317 0.1681 0.2441
112.5 15 1.589 0.1741 0.2398
112.5 45 3.094 0.2015 0.2777
112.5 75 4.789 0.2863 0.3271
112.5 105 4.843 0.2571 0.3343
112.5 135 3.959 0.2397 0.3047
112.5 165 2.183 0.1631 0.2603
112.5 195 2.227 0.161 0.2594
112.5 225 3.515 0.2271 0.2822
112.5 255 5.354 0.2621 0.3364
112.5 285 4.755 0.3245 0.3161
112.5 315 2.892 0.2081 0.2663
112.5 345 1.411 0.1596 0.2365
127.5 15 1.213 0.1441 0.244
127.5 45 2.447 0.1984 0.2592
127.5 75 3.833 0.2534 0.2969
127.5 105 3.532 0.2394 0.2943
127.5 135 3.069 0.2741 0.2829
127.5 165 1.734 0.2681 0.263
127.5 195 2.258 0.3352 0.2583
127.5 225 3.112 0.2388 0.2861
127.5 255 3.747 0.2479 0.2881
127.5 285 3.533 0.2386 0.2889
127.5 315 2.576 0.2118 0.2664
127.5 345 1.32 0.1488 0.2456
142.5 15 1.191 0.1569 0.2115
142.5 45 1.994 0.2047 0.2261
142.5 75 2.785 0.2493 0.2376
142.5 105 2.792 0.6034 0.2345
142.5 255 2.794 0.7216 0.2393
142.5 285 3.128 0.4251 0.2548
142.5 315 2.372 0.825 0.2297
142.5 345 1.284 0.186 0.2121
157.5 15 1.261 0.2947 0.2473
157.5 345 1.239 0.2701 0.2356