CLAS Physics Database

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Measurement E216M889

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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 : 7 — 8 GeV2
W : 1.4 — 1.45 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 0.125632 0.0733232 0.03061727
27 0.105585 0.0342665 0.02221341
45 0.0761861 0.0248771 0.01149263
63 0.0447143 0.0127887 0.01023536
81 0.0388719 0.010795 0.00572479
99 0.0700595 0.0158975 0.01065396
117 0.0831168 0.0329672 0.01242608
135 0.0665151 0.0175874 0.01118366
153 0.0621946 0.0176101 0.0159358
171 0.0871543 0.0376028 0.03437526