Phi angle in CM frame for different runs

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

The angle is (-30, 330).

	electron sector=1	electron sector=6
[math]\displaystyle{ \varphi_{e}^{LAB} }[/math]
[math]\displaystyle{ \varphi_{pion}^{LAB} }[/math]
[math]\displaystyle{ \varphi_{e}^{LAB} - \varphi_{pion}^{LAB} }[/math]

The angle is (0, 360).

	electron sector=1	electron sector=6
[math]\displaystyle{ \varphi_{e}^{LAB} }[/math]
[math]\displaystyle{ \varphi_{pion}^{LAB} }[/math]
[math]\displaystyle{ \varphi_{e}^{LAB} - \varphi_{pion}^{LAB} }[/math]

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

	electron sector=1	electron sector=6
[math]\displaystyle{ \varphi_{e}^{CM} }[/math]
[math]\displaystyle{ \varphi_{pion}^{CM} }[/math]
[math]\displaystyle{ \varphi_{e}^{CM} - \varphi_{pion}^{CM} }[/math]

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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