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A novel spectroscopic design toward the measurement of electron's electric dipole moment using lead monofluoride

文献类型：期刊论文

作者Wang, Zesen4; Pang, Renjun4; Ma, Jie4; Lin, Qinning4; Ji, Yabing4; Hou, Shunyong4; Li, Xiaohu1,5,7; Xu, Liang2; Li, Xingjia3; Chen, Guanglong3
刊名JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER
出版日期2025-12-01
卷号347页码:10
关键词Electron's electric dipole moment (eEDM) Spectroscopic detection Lead monofluoride (PbF) The Standard Model
ISSN号0022-4073
DOI10.1016/j.jqsrt.2025.109658
通讯作者Yang, Zhenghai(zhyang@lps.ecnu.edu.cn) ; Yang, Tao(tyang@lps.ecnu.edu.cn)
英文摘要The search for the electron's electric dipole moment (eEDM) has long been pursued to explore the new physics beyond the Standard Model. To date, the most stringent constraints on the eEDM measurement were imposed by paramagnetic polar diatomic molecules/molecular ions through probing the changes of the precession rate of electron spins in an electric field, although nonzero eEDM has not been reported yet. In this study, we propose novel design of spectroscopic detection in the lead monofluoride (208Pb19F) molecule that can take full advantage of its long coherent ground state, low Lande g factor, strong internal electric field, and unique field-dependent eEDM sensitive transition. Adopting an effective Hamiltonian approach, we untangle the complicated J-mixing energy level structure of the coherent ground state X12 Pi 1/2(upsilon = 0, J = 1/2, e, F = 1, |MF| = 1), and characterize the rotational branching ratios in the A2 Sigma 1/2(upsilon ' = 0) <- X12 Pi 1/2(upsilon = 0) detection scheme. We demonstrate the highly asymmetric branching ratios in the Sigma <-Pi transition which permits the preparation of coherently mixed states, followed by the simulated Stark spectroscopy under the externally applied electric field to address the sensitive transition Qfe(1/2) for the eEDM measurement. In the end, we discuss the feasibility of laser cooling and Stark deceleration of PbF molecules. Our detection scheme will support us in constructing a fully optical approach toward the eEDM measurement using PbF molecules, which can enrich the molecular pool that explores the fundamental physics on a table-top apparatus.
WOS关键词FRANCK-CONDON FACTORS ; SEARCH ; STATES
WOS研究方向Optics ; Spectroscopy
语种英语
WOS记录号WOS:001586510900002
出版者PERGAMON-ELSEVIER SCIENCE LTD
源URL[http://ir.xao.ac.cn/handle/45760611-7/8223]  
专题研究单元未命名
通讯作者Yang, Zhenghai; Yang, Tao
作者单位1.Chinese Acad Sci, Key Lab Radio Astron & Technol, A20 Datun Rd, Beijing 100101, Peoples R China
2.Univ Shanghai Sci & Technol, Shanghai Key Lab Modern Opt Syst, 516 Jungong Rd, Shanghai 200093, Peoples R China
3.Shanghai Univ Engn Sci, Sch Math Phys & Stat, Shanghai 201620, Peoples R China
4.East China Normal Univ, State Key Lab Precis Spect, Shanghai 200062, Peoples R China
5.Chinese Acad Sci, Xinjiang Astron Observ, 150 Sci 1 St, Urumqi 830011, Xinjiang, Peoples R China
6.Shanxi Univ, Collaborat Innovat Ctr Extreme Opt, Taiyuan 030006, Shanxi, Peoples R China
7.Xinjiang Key Lab Radio Astrophys, 150 Sci 1 St, Urumqi 830011, Xinjiang, Peoples R China
推荐引用方式
GB/T 7714		 Wang, Zesen,Pang, Renjun,Ma, Jie,et al. A novel spectroscopic design toward the measurement of electron's electric dipole moment using lead monofluoride[J]. JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER,2025,347:10.
APA Wang, Zesen.,Pang, Renjun.,Ma, Jie.,Lin, Qinning.,Ji, Yabing.,...&Yang, Tao.(2025).A novel spectroscopic design toward the measurement of electron's electric dipole moment using lead monofluoride.JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER,347,10.
MLA Wang, Zesen,et al."A novel spectroscopic design toward the measurement of electron's electric dipole moment using lead monofluoride".JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER 347(2025):10.

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来源：新疆天文台

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