dorsal/arxiv
View SchemaInduced Parity Nonconserving Interaction and Enhancement of Two-Nucleon Parity Nonconserving Forces
| Authors | V. V. Flambaum, O. K. Vorov |
|---|---|
| Categories | |
| ArXiv ID | nucl-th/9412018 |
| URL | https://arxiv.org/abs/nucl-th/9412018 |
| DOI | 10.1103/PhysRevC.51.1521 |
| Journal | Phys.Rev.C51:1521-1527,1995 |
Abstract
Two-nucleon parity nonconserving (PNC) interaction induced by the single-particle PNC weak potential and the two-nucleon residual strong interaction is considered. An approximate analytical formula for this Induced PNC Interaction (IPNCI) between proton and neutron is derived ($Q({\bf r} {\bf \sigma}_{p} \times {\bf \sigma}_{n}) \delta({\bf r}_{p}-{\bf r}_{n})$), and the interaction constant is estimated. As a result of coherent contributions from the nucleons to the PNC potential, IPNCI is an order of magnitude stronger ($\sim A^{1/3}$) than the residual weak two-nucleon interaction and has a different coordinate and isotopic structure (e.g., the strongest part of IPNCI does not contribute to the PNC mean field). IPNCI plays an important role in the formation of PNC effects, e.g., in neutron-nucleus reactions. In that case, it is a technical way to take into account the contribution of the distant (small) components of a compound state which dominates the result. The absence of such enhancement ($\sim A^{1/3}$) in the case of T- and P-odd interaction completes the picture.
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"abstract": "Two-nucleon parity nonconserving (PNC) interaction induced by the\nsingle-particle PNC weak potential and the two-nucleon residual strong\ninteraction is considered. An approximate analytical formula for this Induced\nPNC Interaction (IPNCI) between proton and neutron is derived ($Q({\\bf r} {\\bf\n\\sigma}_{p} \\times {\\bf \\sigma}_{n}) \\delta({\\bf r}_{p}-{\\bf r}_{n})$), and the\ninteraction constant is estimated. As a result of coherent contributions from\nthe nucleons to the PNC potential, IPNCI is an order of magnitude stronger\n($\\sim A^{1/3}$) than the residual weak two-nucleon interaction and has a\ndifferent coordinate and isotopic structure (e.g., the strongest part of IPNCI\ndoes not contribute to the PNC mean field). IPNCI plays an important role in\nthe formation of PNC effects, e.g., in neutron-nucleus reactions. In that case,\nit is a technical way to take into account the contribution of the distant\n(small) components of a compound state which dominates the result. The absence\nof such enhancement ($\\sim A^{1/3}$) in the case of T- and P-odd interaction\ncompletes the picture.",
"arxiv_id": "nucl-th/9412018",
"authors": [
"V. V. Flambaum",
"O. K. Vorov"
],
"categories": [
"nucl-th"
],
"doi": "10.1103/PhysRevC.51.1521",
"journal_ref": "Phys.Rev.C51:1521-1527,1995",
"title": "Induced Parity Nonconserving Interaction and Enhancement of Two-Nucleon Parity Nonconserving Forces",
"url": "https://arxiv.org/abs/nucl-th/9412018"
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