CLAS Physics Database

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Measurement E216M565

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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 : 4.2 — 5 GeV2
W : 1.7 — 1.75 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 0.965131 0.113489 0.12862443
27 0.909824 0.0760851 0.15364992
45 0.94466 0.0413796 0.09191929
63 1.07622 0.0954895 0.09939437
81 0.985458 0.035532 0.09267748
99 1.14006 0.125799 0.12698165
117 0.897314 0.0609315 0.08449909
135 0.862431 0.0464905 0.06899424
153 0.815439 0.0393838 0.07196788
171 1.04898 0.105704 0.10482471