Fri·Jun 16, 2017Friday·June 16, 2017

1. 01*

   Measurement of the Differential and Total Cross Sections of the $\gamma d\to K^0\Lambda (p)$ Reaction within the Resonance Region

   N. Compton · C.E. Taylor · K. Hicks · P. Cole · N. Zachariou · Y. Ilieva · P. Nadel-Turonski · E. Klempt · V.A. Nikonov · A.V. Sarantsev · the CLAS Collaboration

   We report the first measurement of differential and total cross sections for the $\gamma d\to K^0\Lambda (p)$ 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 has been performed that describes the data without the introduction of new resonances.

   nucl-exPRC(2017)·37 citations
2. 02*

   The ridge effect and three-particle correlations

   Miguel-Angel Sanchis-Lozano🇪🇸 · Edward Sarkisyan-Grinbaum🇨🇭

   Pseudorapidity and azimuthal three-particle correlations are studied based on a correlated-cluster model of multiparticle production. The model provides a common framework for correlations in proton-proton and heavy-ion collisions allowing easy comparison with the measurements. It is shown that azimuthal cluster correlations are definitely required in order to understand three-particle correlations in the near-side ridge effect. This is similar to the explanation of the ridge phenomenon found in our previous analysis of two-particle correlations and generalizes the model to higher-order correlations.

   ↳ hep-phhep-exhep-thnucl-ex+1PRD(2017)·13 citations

* Reconstructed cohort: no mailing for this day survives in the archive. Papers are grouped by their submission times and arXiv's announcement cut-off, assuming announcement without delay; positions follow identifier order. Validated at ~91% exact-day agreement against the archived era.