Role of scalar mesons in the beam asymmetry of $p\bar{p}$ and $\Lambda \bar{\Lambda }$ photoproduction at JLab

Abstract

We suggest a description of the beam asymmetry in $p\bar{p}$ and $\Lambda \bar{\Lambda }$ photoproduction off the proton $\vec{\gamma }+p\to p\bar{p}+p$ and $\vec{\gamma }+p\to \Lambda \bar{\Lambda }+p$, takes into account the contribution of the scalar mesons $f_0(1370)$, $f_0(1500)$, and $f_0(1710)$. These scalars are considered as mixed states of a glueball and nonstrange and strange quarkonia in the framework based on the use of effective hadronic Lagrangians. Present results can be used to guide the possible search for this reaction by the GlueX Collaboration at JLab. Also, we did an estimate of contribution of heavier scalar meson states $f_0(2020)$, $f_0(2100)$, and $f_0(2200)$.

arXiv comment12 pages

References in corpus (10)

• The high-precision, charge-dependent Bonn nucleon-nucleon potential (CD-Bonn)
• Scalar meson and glueball decays within a effective chiral approach
• Measurement of the beam asymmetry $\Sigma$ for ${\pi }^0$ and $\eta$ photoproduction on the proton at $E_{\gamma }=9$ GeV
• Flavor-Spin Symmetry Estimate of the Nucleon Tensor Charge
• Finite-Energy Sum Rules in Eta Photoproduction off the Nucleon
• Neutral Pion Photoproduction in a Regge Model
• Unitarity constraints on neutral pion electroproduction
• Photoproduction of $a_0(980)$ and $f_0(980)$
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• Search for the glueball content of hadrons in gamma p interactions at GlueX

Cited by in corpus (3)

• Baryon -- anti-Baryon Photoproduction
• Observation of $\gamma p\to \Lambda \bar{\Lambda }p$ with GlueX at Jefferson Lab
• Baryon-antibaryon photoproduction cross sections off the proton