What can we learn from recent $2\nu\beta\beta$ experiments?

D. Fang
{"title":"What can we learn from recent $2\\nu\\beta\\beta$ experiments?","authors":"D. Fang","doi":"10.1088/1674-1137/ad181b","DOIUrl":null,"url":null,"abstract":"With recent measurements of the two neutrino double beta decay high precision electron spectra, combining with charge exchange or $\\beta$-decay experimental data, we give severe constraints over the current nuclear many body calculations. Our calculation shows that Quasi-particle Random Phase Approximation (QRPA) approach can well reproduce the measured spectra for the two open shell nuclei, $^{82}$Se and $^{100}$Mo. For the closed shell nucleus $^{136}$Xe, QRPA can also reproduce the spectra with proper treatments. We also find that considering the high-lying state reduction, Nuclear Shell Model can also well reproduce the spectra as well as Gamow-Teller transition strength under a unique quenched Axial-vector coupling constant $g_A$. For $^{136}$Xe, we find that the flip of the sign for the decay strength will lead the spectra to go beyond the so-called High-lying state dominance hypothesis. These results call for future high precision measurement of charge-exchange reaction.","PeriodicalId":504778,"journal":{"name":"Chinese Physics C","volume":"108 1","pages":""},"PeriodicalIF":0.0000,"publicationDate":"2023-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Chinese Physics C","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1088/1674-1137/ad181b","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0

Abstract

With recent measurements of the two neutrino double beta decay high precision electron spectra, combining with charge exchange or $\beta$-decay experimental data, we give severe constraints over the current nuclear many body calculations. Our calculation shows that Quasi-particle Random Phase Approximation (QRPA) approach can well reproduce the measured spectra for the two open shell nuclei, $^{82}$Se and $^{100}$Mo. For the closed shell nucleus $^{136}$Xe, QRPA can also reproduce the spectra with proper treatments. We also find that considering the high-lying state reduction, Nuclear Shell Model can also well reproduce the spectra as well as Gamow-Teller transition strength under a unique quenched Axial-vector coupling constant $g_A$. For $^{136}$Xe, we find that the flip of the sign for the decay strength will lead the spectra to go beyond the so-called High-lying state dominance hypothesis. These results call for future high precision measurement of charge-exchange reaction.
查看原文
分享 分享
微信好友 朋友圈 QQ好友 复制链接
本刊更多论文
我们能从最近的 $2\nu\beta\beta$ 实验中学到什么?
通过最近对两个中微子双β衰变高精度电子能谱的测量,结合电荷交换或β衰变实验数据,我们对目前的核多体计算提出了严格的限制。我们的计算表明,准粒子随机相位逼近(QRPA)方法可以很好地再现$^{82}$Se和$^{100}$Mo这两个开壳核的实测光谱。对于闭壳原子核 $^{136}$Xe,QRPA 也能通过适当的处理重现光谱。我们还发现,考虑到高边沿态还原,核壳模型也能很好地再现光谱,以及在独特的淬火轴向-矢量耦合常数$g_A$下的伽莫-泰勒转变强度。对于 $^{136}$Xe,我们发现衰变强度的符号翻转将导致光谱超越所谓的高边沿态主导假说。这些结果要求未来对电荷交换反应进行高精度测量。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
求助全文
约1分钟内获得全文 去求助
来源期刊
自引率
0.00%
发文量
0
期刊最新文献
Photonuclear reactions on 59Co at bremsstrahlung end-point energies of 40–130 MeV Estimating the production of dark photons with $\eta$ decay in high-energy collisions New measurement of the neutron-induced total cross-sections of natCr in a wide energy range on the Back-n at CSNS Cosmological constraints on the background dynamics of a two-field nonsingular bounce model The Effects of Torsion Charge on Optical Appearances and Additional Photon Rings of an Asymmetric Thin-Shell Wormhole
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
0
微信
客服QQ
Book学术公众号 扫码关注我们
反馈
×
意见反馈
请填写您的意见或建议
请填写您的手机或邮箱
已复制链接
已复制链接
快去分享给好友吧!
我知道了
×
扫码分享
扫码分享
Book学术官方微信
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术
文献互助 智能选刊 最新文献 互助须知 联系我们:info@booksci.cn
Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。
Copyright © 2023 Book学术 All rights reserved.
ghs 京公网安备 11010802042870号 京ICP备2023020795号-1