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$\omega$ meson signal extraction

Figure Information
Scope: PWG
PWG-EM (Electromagnetic probes)
Energy
5.02 TeV
System
p-p
Figure Group
[HP2024] low mass dileptons
Figure Image
Figure image (.eps)
ls_1stand2ndstep_default_0.eps
Figure image (.pdf)
ls_1stand2ndstep_default_0.pdf
Figure Caption

Unlike sign (ULS) and Like sign (LS) spectra in pp at $\sqrt(s) = 5.02$ TeV at midrapidity as a function of the inv. mass (m_ee) within $1< p_{\rm T, ee} < 1.5$ GeV/$\it{c}$.

Two-step background estimation in the \omega(782) peak region, using a pol2 function to parameterize the LS (combinatorial background) and pol1 for remaining ''physical'' background underneath the $\omega$ signal, originating from other dielectron decays.

Detail description

Unlike sign (ULS) and Like sign (LS) spectra in pp at $\sqrt(s) = 5.02$ TeV at midrapidity as a function of the inv. mass (m_ee) within $1< p_{\rm T, ee} < 1.5$ GeV/$\it{c}$.

Two-step background estimation in the \omega(782) peak region, using a pol2 function to parameterize the LS (combinatorial background) and pol1 for remaining ''physical'' background underneath the $\omega$ signal, originating from other dielectron decays.