CLAS Physics Database

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Measurement E216M431

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Experiment: CLAS12 Run Group A, 2018

Spokespersons: Krishna Chandra

No publications available for this experiment

Quantity measured: dσ/d(−cos(θ(π+))), mcbn/rad
Differential cross section, where cos(θ(π+) is cosine of the azimuthal angle of π+ in CMS.
Beam: e, polarization: none
Target: p (Z=1, A=1), polarization: none
Final state: π+π−p, polarization: none

Q2 : 3.5 — 4.2 GeV2
W : 1.65 — 1.7 GeV

Observable quantity measured (Y axis): dσ/d(−cos(θ(π+))), mcbn/rad
Plot measurement data

Parameter (X axis): θ(π+), deg

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

Measured data:

θ(π+),
deg
dσ/d(−cos(θ(π+))),
mcbn/rad
Stat. error,
mcbn/rad
Syst. error,
mcbn/rad
9 1.1626 0.065652 0.0946991
27 1.04875 0.0437749 0.07972455
45 1.0606 0.028482 0.08273951
63 1.06358 0.0262332 0.07836014
81 1.10538 0.0270848 0.08182445
99 1.14142 0.0357232 0.0850593
117 1.11737 0.0516048 0.12965406
135 1.02819 0.0565203 0.22035726
153 0.820912 0.0260348 0.36867555
171 1.10439 0.0037656 0.61996832