Studies on the polarization transfer coefficients C_x and C_z in the gamma p -> K^+ Lambda(1520,3/2^-) reaction process

Abstract

We investigate the polarization transfer coefficients C_(x,z) for the gamma p -> K^+ Lambda(1520,3/2^-) reaction process, in which the photon is polarized circularly and the Lambda(1520,3/2^-) along the x- or z-axis. To this end, we employ the effective Lagrangian method at tree level and the gauge-invariant form factor scheme. In addition to the Born terms, (s,u,t_K,t_K^*)-channels and contact term, we include the nucleon resonance D_{13}(2080) in the s-channel. We compute the C_(x,z) as functions of theta_K as well as E_cm. It turns out that the K^*-exchange and D_{13} contributions are negligible within available experimental and theoretical inputs for them. In contrast, we observe that the contact and K-exchange contributions play dominant roles for determining the C_(x,z). Especially, the $K$-exchange enhances the transverse polarization transfer C_x considerably.

11 pages, 13 figures

References in corpus (12)

• Differential Cross Sections for gamma + p --> K+ + Y for Lambda and Sigma0 Hyperons
• First Measurement of Beam-Recoil Observables Cx and Cz in Hyperon Photoproduction
• Nucleon and Delta resonances in K Sigma(1385) photoproduction from nucleons
• Gauge-invariant approach to meson photoproduction including the final-state interaction
• Baryon resonances and polarization transfer in hyperon photoproduction
• Photon induced Lambda(1520) production and the role of the K^* exchange
• Lambda(1520,3/2^-) photoproduction reaction via gamma N -> K Lambda(1520)
• Near-threshold photoproduction of $\Lambda (1520)$ from protons and deuterons
• Coupling of \bar K*N to the Lambda(1520)
• eta photoproduction and N* resonances
• Test of the reaction mechanism for gamma N -> K Lambda(1520) using the polarized photon
• Polarization in Hyperon Photo- and Electro- Production

Cited by in corpus (11)

• The role of the $N^{\ast }(2080)$ resonance in the $\vec{\gamma }p\to K^{+}\Lambda (1520)$ reaction
• Lambda(1520) photoproduciton off the proton target with Regge contributions
• Re-analysis of the $\Lambda (1520)$ photoproduction reaction
• K*Sigma photoproduction off the proton target with baryon resonances
• Role of the $N^{\ast }(2080)$ in $pp\to p{K}^{+}\Lambda (1520)$ and ${\pi }^{-}p\to K^0\Lambda (1520)$ reactions
• Charged pion photoproduction with the Delta(1232) baryon beyond the resonance region
• Photoproduction $\gamma p\to K^{+}\Lambda (1520)$ in an effective Lagrangian approach
• Eta and kaon production in a chiral quark model
• Electroproduction of $\Lambda (1520)$ off the nucleon target with the nucleon resonances
• The role of $N^{\ast }(2120)$ nucleon resonance in $K\Lambda (1520)$ photon and hadronic productions
• Photoproduction $\gamma p\to K^{+}\Lambda (1690)$ in an effective Lagrangian approach