CLAS Physics Database

Measurement E216M440

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: 1.7 — 1.75 GeV

Measurement data
θ(π+), [deg] dσ/d(−cos(θ(π+))), [μb/rad] uncertainty
9.0 1.38111 0.0670337
27.0 1.33624 0.040158
45.0 1.31634 0.0327263
63.0 1.32329 0.0314771
81.0 1.38031 0.0383449
99.0 1.51185 0.0355674
117.0 1.26618 0.0371478
135.0 1.21049 0.0472519
153.0 1.0951 0.0392688
171.0 1.38064 0.00414975