CLAS Physics Database

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Measurement E216M503

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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 : 2.05 — 2.1 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 1.77985 0.0655114 0.15090404
27 1.54605 0.0361826 0.1175103
45 1.21364 0.0302879 0.09258489
63 1.07111 0.0298243 0.08721299
81 1.05191 0.0317137 0.08057313
99 1.00638 0.031387 0.07316143
117 0.943849 0.037521 0.07700877
135 0.777454 0.02444 0.06883519
153 0.782163 0.0369949 0.10714935
171 0.660084 0.00227477 0.33867794