CLAS Physics Database

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Measurement E216M485

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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 : 1.95 — 2 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 1.56686 0.0835181 0.14994028
27 1.41028 0.0370227 0.115622
45 1.16974 0.0280616 0.08956307
63 1.10556 0.0267904 0.08571856
81 1.1779 0.032814 0.08745649
99 1.20858 0.0281705 0.08561523
117 1.07215 0.024379 0.0805851
135 0.917175 0.0674601 0.1100311
153 0.873383 0.0428267 0.13830994
171 0.802028 0.00223373 0.42495436