CLAS Physics Database

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Measurement E216M440

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Experiment: CLAS12 Run Group A, 2018

Spokespersons: Krishna Chandra

No publications available for this experiment

Quantity measured: dσ/d(−cos(θ(π+))), mcbn/rad
Differential cross section, where cos(θ(π+) is cosine of the azimuthal angle of π+ in CMS.
Beam: e, polarization: none
Target: p (Z=1, A=1), polarization: none
Final state: π+π−p, polarization: none

Q2 : 3.5 — 4.2 GeV2
W : 1.7 — 1.75 GeV

Observable quantity measured (Y axis): dσ/d(−cos(θ(π+))), mcbn/rad
Plot measurement data

Parameter (X axis): θ(π+), deg

Click here to get data in text file, delimited with tabs.

Measured data:

θ(π+),
deg
dσ/d(−cos(θ(π+))),
mcbn/rad
Stat. error,
mcbn/rad
Syst. error,
mcbn/rad
9 1.38111 0.0670337 0.10965853
27 1.33624 0.040158 0.09996589
45 1.31634 0.0327263 0.10323125
63 1.32329 0.0314771 0.10254666
81 1.38031 0.0383449 0.10156679
99 1.51185 0.0355674 0.11121848
117 1.26618 0.0371478 0.13734107
135 1.21049 0.0472519 0.25401589
153 1.0951 0.0392688 0.4777858
171 1.38064 0.00414975 0.82809491