CLAS Physics Database

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Measurement E216M574

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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 : 1.75 — 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 0.730604 0.0525795 0.09277515
27 0.703678 0.0315425 0.06988701
45 0.779541 0.0318455 0.07641476
63 0.898349 0.035402 0.09301212
81 0.880298 0.0427352 0.0725607
99 0.771246 0.0313908 0.06589515
117 0.685284 0.0270429 0.05882092
135 0.662282 0.0322707 0.05792893
153 0.692774 0.0409885 0.1003388
171 0.739237 0.0663074 0.08372224