CLAS Physics Database

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Measurement E216M449

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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 : 1.75 — 1.8 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 1.22346 0.0578267 0.09625415
27 1.177 0.0398366 0.09491746
45 1.12513 0.0323831 0.08685824
63 1.26848 0.0289847 0.09599991
81 1.33926 0.0287339 0.09819949
99 1.39943 0.0427952 0.10384558
117 1.21091 0.0302017 0.11119853
135 1.1044 0.0700129 0.18589971
153 0.896871 0.0426905 0.30782821
171 1.11085 0.00328123 0.62754788