dorsal/arxiv
View SchemaAn Effective Field Theory Calculation of the Parity Violating Asymmetry in n+p -> d+gamma
| Authors | David B. Kaplan, Martin J. Savage, Roxanne P. Springer, Mark B. Wise |
|---|---|
| Categories | |
| ArXiv ID | nucl-th/9807081 |
| URL | https://arxiv.org/abs/nucl-th/9807081 |
| DOI | 10.1016/S0370-2693(99)00032-5 |
| Journal | Phys.Lett. B449 (1999) 1-5 |
Abstract
Weak interactions are expected to induce a parity violating pion-nucleon coupling, h_{\pi NN}^{(1)}. This coupling should be measurable in a proposed experiment to study the parity violating asymmetry A_\gamma in the process \vec n + p \to d+\gamma. We compute the leading dependence of A_\gamma on the coupling h_{\pi NN}^{(1)} using recently developed effective field theory techniques and find an asymmetry of A_\gamma = +0.17 h_{\pi NN}^{(1)} at leading order. This asymmetry has the opposite sign to that given by Desplanques, Donoghue and Holstein.
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"abstract": "Weak interactions are expected to induce a parity violating pion-nucleon\ncoupling, h_{\\pi NN}^{(1)}. This coupling should be measurable in a proposed\nexperiment to study the parity violating asymmetry A_\\gamma in the process \\vec\nn + p \\to d+\\gamma. We compute the leading dependence of A_\\gamma on the\ncoupling h_{\\pi NN}^{(1)} using recently developed effective field theory\ntechniques and find an asymmetry of A_\\gamma = +0.17 h_{\\pi NN}^{(1)} at\nleading order. This asymmetry has the opposite sign to that given by\nDesplanques, Donoghue and Holstein.",
"arxiv_id": "nucl-th/9807081",
"authors": [
"David B. Kaplan",
"Martin J. Savage",
"Roxanne P. Springer",
"Mark B. Wise"
],
"categories": [
"nucl-th",
"hep-ph"
],
"doi": "10.1016/S0370-2693(99)00032-5",
"journal_ref": "Phys.Lett. B449 (1999) 1-5",
"title": "An Effective Field Theory Calculation of the Parity Violating Asymmetry in n+p -\u003e d+gamma",
"url": "https://arxiv.org/abs/nucl-th/9807081"
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