dorsal/arxiv
View SchemaAn analysis of the reaction pp --> pp\eta near threshold
| Authors | K. Nakayama, J. Haidenbauer, C. Hanhart, J. Speth |
|---|---|
| Categories | |
| ArXiv ID | nucl-th/0302061 |
| URL | https://arxiv.org/abs/nucl-th/0302061 |
| DOI | 10.1103/PhysRevC.68.045201 |
| Journal | Phys.Rev. C68 (2003) 045201 |
Abstract
It is shown that most of the available data on the $pp\to pp\eta$ reaction, including the invariant mass distributions in the $pp\to pp\eta$ reaction recently measured at COSY, can be understood in terms of the partial-wave amplitudes involving final $pp$ $S$ and $P$ states and the $\eta$ meson s-wave. This finding, together with the fact that results within a meson--exchange model are especially sensitive to the details of the excitation mechanism of the $S_{11}(1535)$ resonance, demonstrates the possibility of investigating the properties of this resonance in $NN$ collisions. The spin correlation function $C_{xx}$ is shown to disentangle the $S$- and $P$-wave contributions. It is also argued that spin correlations may be used to help constrain the contributions of the amplitudes corresponding to the final $pp$ $^3P_0$
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"abstract": "It is shown that most of the available data on the $pp\\to pp\\eta$ reaction,\nincluding the invariant mass distributions in the $pp\\to pp\\eta$ reaction\nrecently measured at COSY, can be understood in terms of the partial-wave\namplitudes involving final $pp$ $S$ and $P$ states and the $\\eta$ meson s-wave.\nThis finding, together with the fact that results within a meson--exchange\nmodel are especially sensitive to the details of the excitation mechanism of\nthe $S_{11}(1535)$ resonance, demonstrates the possibility of investigating the\nproperties of this resonance in $NN$ collisions. The spin correlation function\n$C_{xx}$ is shown to disentangle the $S$- and $P$-wave contributions. It is\nalso argued that spin correlations may be used to help constrain the\ncontributions of the amplitudes corresponding to the final $pp$ $^3P_0$",
"arxiv_id": "nucl-th/0302061",
"authors": [
"K. Nakayama",
"J. Haidenbauer",
"C. Hanhart",
"J. Speth"
],
"categories": [
"nucl-th"
],
"doi": "10.1103/PhysRevC.68.045201",
"journal_ref": "Phys.Rev. C68 (2003) 045201",
"title": "An analysis of the reaction pp --\u003e pp\\eta near threshold",
"url": "https://arxiv.org/abs/nucl-th/0302061"
},
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