CLAS Physics Database

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Measurement E216M979

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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 : 1.9 — 1.95 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 0.521403 0.0781024 0.07267904
27 0.337914 0.040699 0.03521272
45 0.280557 0.034739 0.10529
63 0.288914 0.037254 0.02632573
81 0.261563 0.0227064 0.0265306
99 0.248797 0.0192392 0.02168809
117 0.203039 0.0177705 0.02254689
135 0.182063 0.0203547 0.01934437
153 0.157286 0.0327227 0.02499594
171 0.19951 0.0296542 0.03081514