CLAS Physics Database

Measurement E216M395

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: 1.45 — 1.5 GeV

Measurement data
θ(π+), [deg] dσ/d(−cos(θ(π+))), [μb/rad] uncertainty
9.0 0.641976 0.0772636
27.0 0.710453 0.0508914
45.0 0.729174 0.0343366
63.0 0.611404 0.0243794
81.0 0.598601 0.0281608
99.0 0.53737 0.0315626
117.0 0.510105 0.0240644
135.0 0.459137 0.0257669
153.0 0.579445 0.00376921
171.0 0.837247 0.00102824