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Measurement E103M4

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Experiment: g7a: Search for medium modification of light vector mesons off nuclei, 2007

Spokespersons: D. Weygand, C. Djalali, M. Kossov

Publication:

Quantity measured: dY/dMρ(e+, e), counts/24MeV
Differential yield, where Mρ(e+,e) is current ρ-meson mass.
Beam: γ, polarization: none
Target: d (Z=1, A=2), polarization: none
Final state: ρ + X, polarization: none

Eγ : 0 — 3.8 GeV
Ebeam : 4 GeV

Observable quantity measured (Y axis): dY/dMρ(e+, e), counts/24MeV
Plot measurement data

Parameter (X axis): Mρ(e+,e), GeV

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

Measured data:

Mρ(e+,e),
GeV
dY/dMρ(e+, e),
counts/24MeV
Data errors,
counts/24MeV
0.132 1.68 1.296
0.156 1.665 1.296
0.18 1.616 1.311
0.204 -0.446 1.661
0.228 -4.949 1.058
0.252 1.107 2.98
0.276 -3.35 2.324
0.3 1.181 3.292
0.324 -0.566 3.137
0.348 7.107 4.247
0.372 3.92 3.995
0.396 8.492 4.673
0.42 17.272 5.696
0.444 42.311 7.697
0.468 27.042 6.779
0.492 28.972 7.009
0.516 43.192 8.03
0.54 62.213 9.198
0.564 48.501 8.436
0.588 70.516 9.61
0.612 80.233 9.908
0.636 89.701 10.058
0.66 113.808 11.049
0.684 137.182 12.083
0.708 165.56 13.334
0.732 172.019 13.928
0.756 184.957 15.811
0.78 179.642 22.983
0.804 129.569 13.401
0.828 70.128 8.805
0.852 50.422 7.316
0.876 46.68 6.969
0.9 28.635 5.488
0.924 16.917 4.294
0.948 25.626 5.238
0.972 20.744 4.841
0.996 20.849 5.448
1.02 10.193 8.683
1.044 3.762 3.323
1.068 11.196 3.567
1.092 6.979 2.786
1.116 11.568 3.464
1.14 7.351 2.771
1.164 6.455 2.585
1.188 2.202 1.536