This title appears in the Scientific Report :
2014
Please use the identifier:
http://dx.doi.org/10.1016/j.physletb.2014.10.029 in citations.
Please use the identifier: http://hdl.handle.net/2128/8227 in citations.
Charge symmetry breaking in $dd\to {}^{4}\mathrm{He}{\pi }^{0}$ with WASA-at-COSY
Charge symmetry breaking in $dd\to {}^{4}\mathrm{He}{\pi }^{0}$ with WASA-at-COSY
Charge symmetry breaking (CSB) observables are a suitable experimental tool to examine effects induced by quark masses on the nuclear level. Previous high precision data from TRIUMF and IUCF are currently used to develop a consistent description of CSB within the framework of chiral perturbation the...
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Please use the identifier: http://hdl.handle.net/2128/8227 in citations.
Charge symmetry breaking (CSB) observables are a suitable experimental tool to examine effects induced by quark masses on the nuclear level. Previous high precision data from TRIUMF and IUCF are currently used to develop a consistent description of CSB within the framework of chiral perturbation theory. In this work the experimental studies on the reaction View the MathML sourcedd→He4π0 have been extended towards higher excess energies in order to provide information on the contribution of p -waves in the final state. For this, an exclusive measurement has been carried out at a beam momentum of pd=1.2 GeV/cpd=1.2 GeV/c using the WASA-at-COSY facility. The total cross section amounts to σtot=(118±18stat±13sys±8ext) pbσtot=(118±18stat±13sys±8ext) pb and first data on the differential cross section are consistent with s-wave pion production. |