Excitation function for<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mmultiscripts><mml:mrow><mml:mi mathvariant="normal">He</mml:mi></mml:mrow><mml:mprescripts /><mml:mrow /><mml:mrow><mml:mn>4</mml:mn></mml:mrow><mml:mrow /><mml:mrow /></mml:mmultiscripts></mml:mrow></mml:math>(<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msup><mml:mrow><mml:mi mathvariant="normal">π</mml:mi></mml:mrow><mml:mrow><mml:mo>+</mml:mo></mml

This paper presents a large solid angle measurement of the positive pion absorption cross section on 4 He and its decomposition into partial channels. The total absorption cross sections at incident pion kinetic energies of T ϩϭ 70, 118, 162, and 239 MeV are 35Ϯ5, 52Ϯ4, 51Ϯ5, and 27Ϯ2 mb, respectively. These values are lower than those reported in some previous experiments. At all pion energies a large fraction of the absorption cross section is due to multinucleon channels. ͓S0556-2813͑98͒03108-2͔

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Excitation function forHe4(π+

Cited by 4 publications

References 29 publications

Distorted-wave impulse approximation calculations of proton polarization followingπ+absorption in nuclei

Distorted-wave impulse approximation calculations of proton polarization followingπ+absorption in nuclei

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Total and partial pion absorption cross sections on4Hein the Δ resonance region

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