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DOE OSTI · 21611917

{Lambda}K*{Lambda}(1116) photoproduction and nucleon resonances

Kim, Sang-Ho·Kim, Hyun-Chul·Nam, Seung-il·Oh, Yongseok
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Abstract

In this presentation, we report our recent studies on the {Lambda}K*{Lambda}(1116) photoproduction off the proton target, using the tree-level Born approximation, via the effective Lagrangian approach. In addition, we include the nine (three- or four-star confirmed) nucleon resonances below the threshold {radical}(s{sub th}){approx_equal}2008 MeV, to interpret the discrepancy between the experiment and previous theoretical studies, in the vicinity of the threshold region. From the numerical studies, we observe that the S{sub 11}(1535) and S11(1650) play an important role for the cross-section enhancement near the {radical}(s{sub th}). It also turns out that, in order to reproduce the data, we have the vector coupling constants gK*S{sub 11}(1535){Lambda} = (7.0{approx}9.0) and gK*S{sub 11}(1650){Lambda} (5.0{approx}6.0).

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72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDSAPPROXIMATIONSBARYONSBASIC INTERACTIONSBORN APPROXIMATIONBOSONSCALCULATION METHODSCOMPOSITE MODELSCOUPLING CONSTANTSCROSS SECTIONSELECTROMAGNETIC INTERACTIONSELEMENTARY PARTICLESENERGY RANGEFERMIONSFLAVOR MODELFUNCTIONSHADRONSHYPERONSINTERACTIONSK*-892 MESONSKAONSKAONS MINUSLAGRANGIAN FUNCTIONLAMBDA BARYONSMATHEMATICAL MODELSMATHEMATICSMESONSMEV RANGEN BARYONSN*BARYONSN-1535 BARYONSN-1650 BARYONSNUCLEONSNUMERICAL ANALYSISPARTICLE INTERACTIONSPARTICLE MODELSPARTICLE PRODUCTIONPHOTOPRODUCTIONPROTONSPSEUDOSCALAR MESONSQUARK MODELSTRANGE MESONSSTRANGE PARTICLESSYMMETRY BREAKINGVECTOR MESONS

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Kim, Sang-Ho, Kim, Hyun-Chul, Nam, Seung-il, Oh, Yongseok. 2011-10-21. {Lambda}K*{Lambda}(1116) photoproduction and nucleon resonances. https://doi.org/10.1063/1.3647388

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