Pion production near threshold on 40Ca: Energy dependence and angular distribution

doi:10.1016/0370-2693(76)90558-X

Physics Letters B

Volume 61, Issue 1, 1 March 1976, Pages 47-49

https://doi.org/10.1016/0370-2693(76)90558-X Get rights and content

Abstract

The differential cross section for the ⁴⁰Ca(p, π⁺)⁴¹ Ca(g.s.) reaction has been measured as a function of energy for proton energies between 149 and 154 MeV and as a function of angle at 154 MeV. The simple formulations of both the one-nucleon and two-nucleon reaction mechanisms fail to account for the shape of the energy dependence of the cross section. DWBA calculations using the one-nucleon mechanism overestimate the cross sections by at least a factor of 30 and fail to reproduce the shape of the experimental angular distribution.

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¹: On leave from the University of Maryland, College Park, Maryland 20742.

²: Present address: Los Alamos Scientific Laboratory, Los Alamos, New Mexico 87544.

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Pion production near threshold on 40Ca: Energy dependence and angular distribution

Abstract

Phys. Lett.

Phys. Lett.

Phys. Lett.

Pion production near threshold on ⁴⁰Ca: Energy dependence and angular distribution