CLAS Physics Database

Measurement E216M611

Experiment: CLAS12 Run Group A
Year: 2018
Spokesperson: Krishna Chandra
Reaction: ep → π+πp
Polarization: none
Quantity: dσ/d(−cos(θ(π+)))
Q2: 4.2 — 5.0 GeV2
W: 1.95 — 2.0 GeV

Measurement data
θ(π+), [deg] dσ/d(−cos(θ(π+))), [μb/rad] uncertainty
9.0 1.14061 0.0969037
27.0 0.943934 0.0268711
45.0 0.841802 0.0224515
63.0 0.739566 0.0277448
81.0 0.827885 0.0292456
99.0 0.769166 0.0290434
117.0 0.745568 0.0362109
135.0 0.541534 0.0243972
153.0 0.458156 0.0349002
171.0 0.489441 0.00152439