CLAS Physics Database

Measurement E216M458

Experiment: CLAS12 Run Group A
Year: 2018
Spokesperson: Krishna Chandra
Reaction: ep → π+πp
Polarization: none
Quantity: dσ/d(−cos(θ(π+)))
Q2: 3.5 — 4.2 GeV2
W: 1.8 — 1.85 GeV

Measurement data
θ(π+), [deg] dσ/d(−cos(θ(π+))), [μb/rad] uncertainty
9.0 1.21373 0.0555788
27.0 1.17486 0.0301993
45.0 1.124 0.0297707
63.0 1.25259 0.0313519
81.0 1.37112 0.0348598
99.0 1.39993 0.0381301
117.0 1.23351 0.0425974
135.0 1.08169 0.0487512
153.0 0.852016 0.0394403
171.0 0.998209 0.00333433