dorsal/arxiv
View SchemaOn The pp->pp\eta (eta') Reactions Near Threshold
| Authors | E. Gedalin, A. Moalem, L. Razdolskaja |
|---|---|
| Categories | |
| ArXiv ID | nucl-th/9812007 |
| URL | https://arxiv.org/abs/nucl-th/9812007 |
| DOI | 10.1016/S0375-9474(99)00110-4 |
| Journal | Nucl.Phys. A650 (1999) 471-482 |
Abstract
The production rate for \eta' in pp ->pp \eta' at rest is calculated in a covariant one boson exchange model, previously applied to study pi^0 and \eta production in NN collisions. The transition amplitudes for the elementary BN -> eta' N processes with B being the meson exchanged (B = pi, sigma, eta, rho, omega and delta) are taken to be the sum of s and u channels with a nucleon in the intermediate states, and a delta meson pole in a t-channel. The couplings of the eta' to hadrons are a factor 0.437 weaker than the respective eta-hadron couplings, as suggested by a quark model and a singlet-octetmixing angle theta = -23 degree. The model reproduces near threshold cross sections for the quasielastic processes pi- p ->n eta (eta') and pp -> pp eta (eta') reactions.
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"abstract": "The production rate for \\eta\u0027 in pp -\u003epp \\eta\u0027 at rest is calculated in a\ncovariant one boson exchange model, previously applied to study pi^0 and \\eta\nproduction in NN collisions. The transition amplitudes for the elementary BN -\u003e\neta\u0027 N processes with B being the meson exchanged (B = pi, sigma, eta, rho,\nomega and delta) are taken to be the sum of s and u channels with a nucleon in\nthe intermediate states, and a delta meson pole in a t-channel. The couplings\nof the eta\u0027 to hadrons are a factor 0.437 weaker than the respective eta-hadron\ncouplings, as suggested by a quark model and a singlet-octetmixing angle theta\n= -23 degree. The model reproduces near threshold cross sections for the\nquasielastic processes pi- p -\u003en eta (eta\u0027) and pp -\u003e pp eta (eta\u0027) reactions.",
"arxiv_id": "nucl-th/9812007",
"authors": [
"E. Gedalin",
"A. Moalem",
"L. Razdolskaja"
],
"categories": [
"nucl-th"
],
"doi": "10.1016/S0375-9474(99)00110-4",
"journal_ref": "Nucl.Phys. A650 (1999) 471-482",
"title": "On The pp-\u003epp\\eta (eta\u0027) Reactions Near Threshold",
"url": "https://arxiv.org/abs/nucl-th/9812007"
},
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