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Measurement of the vec{n}p to dπ⁰π⁰ Reaction with Polarized Beam in the Region of the d^*(2380) Resonance

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arxiv 1601.05253 v1 pith:2VVWY3TB submitted 2016-01-20 nucl-ex

Measurement of the vec{n}p to dπ⁰π⁰ Reaction with Polarized Beam in the Region of the d^*(2380) Resonance

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keywords reactionresonancebeamconfirmdatadoublefusionmeasurement
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We report on a high-statistics measurement of the most basic double pionic fusion reaction $\vec{n}p \to d\pi^0\pi^0$ over the energy region of the $d^*(2380)$ resonance by use of a polarized deuteron beam and observing the double fusion reaction in the quasifree scattering mode. The measurements were performed with the WASA detector setup at COSY. The data reveal substantial analyzing powers and confirm conclusions about the $d^*$ resonance obtained from unpolarized measurements. We also confirm the previous unpolarized data obtained under complementary kinematic conditions.

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