Phi angle in CM frame for different runs

[math]\displaystyle{ \varphi^{LAB} }[/math]

The angle is (0, 360).

electron sector	[math]\displaystyle{ \varphi_{e}^{LAB} }[/math]	[math]\displaystyle{ \varphi_{pion}^{LAB} }[/math]	[math]\displaystyle{ \varphi_{e}^{LAB} - \varphi_{pion}^{LAB} }[/math] after correction
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[math]\displaystyle{ \varphi^{CM} }[/math]

The angle is (0, 360).

I have applied the following cuts: EC_tot>140MeV, EC_inner>50Mev and nphe>2.5.

electron sector	[math]\displaystyle{ \varphi_{e}^{CM} }[/math]	[math]\displaystyle{ \varphi_{pion}^{CM} }[/math]	[math]\displaystyle{ \varphi_{e}^{CM} - \varphi_{pion}^{CM} }[/math] after correction	[math]\displaystyle{ \varphi_{e}^{CM} - \varphi_{pion}^{CM} }[/math]
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I used 27 files. The cut is applied on [math]\displaystyle{ 1.6 < Q^{2} < 1.9 }[/math].

phi_angle_in_cm_frame_vs_electron_sector

phi_angle_in_cm_frame_vs_pion_sector

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