dorsal/arxiv
View SchemaThe Solar $Hep$ Process
| Authors | Kuniharu Kubodera, Tae-Sun Park |
|---|---|
| Categories | |
| ArXiv ID | nucl-th/0402008 |
| URL | https://arxiv.org/abs/nucl-th/0402008 |
| DOI | 10.1146/annurev.nucl.54.070103.181239 |
| Journal | Ann.Rev.Nucl.Part.Sci. 54 (2004) 19-37 |
Abstract
The $Hep$ process is a weak-interaction reaction, $He3 + p \to He4 + e^+ + \nu_e$, which occurs in the sun. There is renewed interest in $Hep$ owing to current experimental efforts to extract from the observed solar neutrino spectrum information on non-standard physics in the neutrino sector. $Hep$ produces highest-energy solar neutrinos, although their flux is quite modest. This implies that the $Hep$ neutrios can at some level influence the solar neutrino spectrum near its upper end. Therefore, a precise interpretation of the observed solar neutrino spectrum requires an accurate estimate of the $Hep$ rate. This is an interesting but challenging task. We describe the difficulties involved and how the recent theoretical developments in nuclear physics have enabled us to largely overcome these difficulties. A historical survey of $Hep$ calculations is followed by an overview of the latest developments. We compare the results obtained in the conventional nuclear physics approach and those obtained in a newly developed effective field theory approach. We also discuss the current status of the experiments relevant to $Hep$.
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"abstract": "The $Hep$ process is a weak-interaction reaction, $He3 + p \\to He4 + e^+ +\n\\nu_e$, which occurs in the sun. There is renewed interest in $Hep$ owing to\ncurrent experimental efforts to extract from the observed solar neutrino\nspectrum information on non-standard physics in the neutrino sector. $Hep$\nproduces highest-energy solar neutrinos, although their flux is quite modest.\nThis implies that the $Hep$ neutrios can at some level influence the solar\nneutrino spectrum near its upper end. Therefore, a precise interpretation of\nthe observed solar neutrino spectrum requires an accurate estimate of the $Hep$\nrate. This is an interesting but challenging task. We describe the difficulties\ninvolved and how the recent theoretical developments in nuclear physics have\nenabled us to largely overcome these difficulties. A historical survey of $Hep$\ncalculations is followed by an overview of the latest developments. We compare\nthe results obtained in the conventional nuclear physics approach and those\nobtained in a newly developed effective field theory approach. We also discuss\nthe current status of the experiments relevant to $Hep$.",
"arxiv_id": "nucl-th/0402008",
"authors": [
"Kuniharu Kubodera",
"Tae-Sun Park"
],
"categories": [
"nucl-th",
"hep-ph"
],
"doi": "10.1146/annurev.nucl.54.070103.181239",
"journal_ref": "Ann.Rev.Nucl.Part.Sci. 54 (2004) 19-37",
"title": "The Solar $Hep$ Process",
"url": "https://arxiv.org/abs/nucl-th/0402008"
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