We report the first measurement of differential and total cross sections for the gamma + d --> K^(0) Lambda (p) reaction, using data from the CLAS detector at the Thomas Jefferson National Accelerator Facility. Data collected during two separate experimental runs were studied with photon-energy coverage 0.8-3.6 GeV and 0.5- 2.6 GeV, respectively. The two measurements are consistent giving confidence in the method and determination of systematic uncertainties. The cross sections are compared with predictions from the KAON-MAID theoretical model (without kaon exchange), which deviate from the data at higher W and at forward kaon angles. These data, along with previously published cross sections for K+ Lambda photoproduction, provide essential constraints on the nucleon resonance spectrum. A first partial wave analysis was performed that describes the data without the introduction of new resonances.
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|Titolo:||Measurement of the differential and total cross sections of the gamma d -> K^(0) Lambda (p) reaction within the resonance region|
|Data di pubblicazione:||2017|
|Appare nelle tipologie:||03.1 Articolo su rivista|