CLAS Physics Database

Measurement E216M449

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: 1.75 — 1.8 GeV

Measurement data
θ(π+), [deg] dσ/d(−cos(θ(π+))), [μb/rad] uncertainty
9.0 1.22346 0.0578267
27.0 1.177 0.0398366
45.0 1.12513 0.0323831
63.0 1.26848 0.0289847
81.0 1.33926 0.0287339
99.0 1.39943 0.0427952
117.0 1.21091 0.0302017
135.0 1.1044 0.0700129
153.0 0.896871 0.0426905
171.0 1.11085 0.00328123