Differential Cross Sections for Neutron-Proton Scattering in the Region of the $d^{\ast }(2380)$ Dibaryon Resonance

Abstract

Differential cross sections have been extracted from exclusive and kinematically complete high-statistics measurements of quasifree polarized $\vec{n}p$ scattering performed in the energy region of the $d^{\ast }(2380)$ dibaryon resonance covering the the range of beam energies $T_n$ = 0.98 - 1.29 GeV ($\sqrt{s}$ = 2.32 - 2.44 GeV). The experiment was carried out with the WASA-at-COSY setup having a polarized deuteron beam impinged on the hydrogen pellet target and utilizing the quasifree process $dp\to np+p_{spectator}$. That way the $np$ differential cross section $\sigma (\Theta )$ was measured over a large angular range. The obtained angular distributions complement the corresponding analyzing power $A_y(\Theta )$ measurements published previously. A SAID partial-wave analysis incorporating the new data strengthens the finding of a resonance pole in the coupled ${}^3{D}_3{-}^3{G}_3$ waves.

References in corpus (9)

• ABC Effect in Basic Double-Pionic Fusion --- Observation of a new resonance?
• Updated analysis of NN elastic scattering to 3 GeV
• Double-Pionic Fusion of Nuclear Systems and the ABCEffect -- Aproaching a Puzzle by Exclusive and Kinematically Complete Measurements
• On the History of Dibaryons and their Final Observation
• The WASA Detector Facility at CELSIUS
• Neutron-Proton Scattering in the Context of the $d^{\ast }$(2380) Resonance
• Partial-Wave Analysis of Nucleon-Nucleon Elastic Scattering Data
• Cross Section for $\gamma n\to {\pi }^{0}n$ measured at Mainz/A2
• Model-independent resonance parameter extraction using the trace of K and T matrices

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• On the Destabilization of High-Mass Neutron Stars by the Emergence of $d^{\ast }$-Hexaquarks