CLAS Physics Database

Measurement E216M431

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: 1.65 — 1.7 GeV

Measurement data
θ(π+), [deg] dσ/d(−cos(θ(π+))), [μb/rad] uncertainty
9.0 1.1626 0.065652
27.0 1.04875 0.0437749
45.0 1.0606 0.028482
63.0 1.06358 0.0262332
81.0 1.10538 0.0270848
99.0 1.14142 0.0357232
117.0 1.11737 0.0516048
135.0 1.02819 0.0565203
153.0 0.820912 0.0260348
171.0 1.10439 0.0037656