CLAS Physics Database

Measurement E216M475

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: 1.9 — 1.95 GeV

Measurement data
θ(π), [deg] dσ/d(−cos(θ(π))), [μb/rad] uncertainty
9.0 1.67808 0.0920325
27.0 1.37967 0.0449105
45.0 1.33499 0.0453689
63.0 1.29381 0.0339743
81.0 1.18376 0.0286142
99.0 1.03903 0.026139
117.0 0.886691 0.023797
135.0 0.873206 0.0304352
153.0 0.915245 0.0326884
171.0 1.2621 0.0705685