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Measurement E213M1090

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Experiment: E1-6, 2025, 2001

Spokespersons: R.W. Gothe, A. Trivedi

Experiment comment: Experiment year: 2001—2002

Measurement comment: The angle ψ is the angle between the plane defined by the three-momenta of the hadron (in parentheses) and the target proton, and the plane defined by the three-momenta of the other two final-state hadrons

No publications available for this experiment

Quantity measured: dσ/dψ(π), mcb/rad
Differential cross section, where ψ(π) is out-of-plane angle of p and π+ in CMS.
Beam: e, polarization: none
Target: p (Z=1, A=1), polarization: none
Final state: π+πp, polarization: none

Q2 : 3.5 — 4.2 GeV2
W : 1.825 — 1.85 GeV
Ebeam : 5.754 GeV

Observable quantity measured (Y axis): dσ/dψ(π), mcb/rad
Plot measurement data

Parameter (X axis): ψ(π), deg

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

Measured data:

ψ(π),
deg
dσ/dψ(π),
mcb/rad
Stat. error,
mcb/rad
Syst. error,
mcb/rad
Total error,
mcb/rad
18 0.2834 0.0208 0.057 0.0607
54 0.3429 0.0269 0.0467 0.0539
90 0.348 0.026 0.0475 0.0542
126 0.379 0.0286 0.0515 0.0589
162 0.4237 0.0323 0.0532 0.0623
198 0.4318 0.0339 0.0546 0.0643
234 0.3586 0.0345 0.0498 0.0606
270 0.3188 0.0233 0.0442 0.05
306 0.2925 0.0248 0.0422 0.049
342 0.2722 0.0339 0.0564 0.0658