Activities
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Seminars
| Seminar on Theoretical and Computational Physics:
| | Title | Hyper-fine prediction of tauon mass in a microscopic cosmological model
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| Speaker | Dr. Vo Van Thuan
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| Affiliation | Duy Tan University (DTU), 3 Quang Trung street, Hai Chau district, Danang, Vietnam; Vietnam Atomic Energy Institute (VINATOM), 59 Ly Thuong Kiet street, Hoan Kiem district, Hanoi, Vietnam
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| Date | Tuesday, 23-01-2018
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| Time | 10:00 AM
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| Location | Meeting room, 6th floor, 2H Building, 18 Hoang Quoc Viet, Hanoi
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| Abstract | Lepton mass hierarchy puzzle as a beyond standard model (BSM) problem is solved by our proposedtime-space symmetry based microscopic cosmological model [1]. Accordingly, masses of charged leptons are calculated by curvatures of hyper-spherical surfaces in a 3D time-like microscopic cosmos, of which the dimensional order correlates strictly with the number three (3) of charged lepton generations. For the first approximation of mass hierarchy that the tauon mass was predicted within 2.2% precision, based on two other accurate experimental masses of electron and muon. For a fine-tuning approximation, there are some corrections added to higher curvatures by contributions from lower curvatures in the higher perturbation up to infinite orders. Correspondingly, the calculations fit the tauon mass within 0.024% of precision [2]. It is an encouraging prediction in the light of explicit physical interpretation of the proposed microscopic cosmological model. However, the highest orderperturbativecorrection of mτ(theor)=m3(∞)=1776.40(in MeV) still deviates by 2.65σ from the experimental tauon mass mτ(exp)=1776.82±0.16 (MeV), which needs searching for some more hyper-fine correction. In a nextfinalizing step, for a firm consistency with experimental data, a semi-phenomenological mechanism of molecular clusterization is suggested to the tauon structural configuration, based on the knowledge of lepton decays of tauon. As a result, a hyper-fine correction (HF)leads to a new prediction of tauon mass: mτ(semi−ph)≡m4(HF)=1777.05±0.25 (MeV) in a good agreement with the experimental tauon mass within experimental errors. The uncertainty of the latest prediction is determined by experimental tauon decays. This implies a neednot onlyto improvethe experimental tauon mass, but also to upgrade experimentaltauondecay branching ratios. In principle, bothkinds of experiments are able to beperformed at BELLE-II/Super-KEKB or at LHCb.
[1] Thuan Vo Van, Foundations of Physics 47 (2017) 1559-1581, DOI 10.1007/s10701-017-0123-2.
[2] Vo Van Thuan, arXiv: 1711.08346v1[physics.gen-ph] (2017).
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| Host person | Nguyễn Anh Kỳ
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