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Linear seesaw model with T7 symmetry for neutrino mass and mixing

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Chinese Physics C 2022年第6期46卷 88-101页

作者： v.v.vien Institute of Applied Technology Thu Dau Mot UniversityBinh Duong ProvinceVietnam Department of Physics Tay Nguyen UniversityDaklak provinceVietnam

We propose a low-scale Standard Model extension with T_(7)×Z_(4)×Z_(3)×Z_(2) symmetry that can successfully explain observed neutrino oscillation results within the 3σ*** neutrino masses are obtained via the linear seesaw *** and inverted neutrino mass orderings are considered with three lepton mixing angles in their experimentally allowed 3σ*** model provides a suitable correlation between the solar and reactor neutrino mixing angles,which is consistent with the TM2 *** prediction for the Dirac phase isδCP∈(295.80,330.0)°for both normal and inverted orderings,including its experimentally maximum value,while those for the two Majorana phases areη1∈(349.60,356.60)°,η2=0 for normal ordering andη1∈(3.44,10.37)°,η2=0 for inverted *** addition,the predictions for the effective neutrino masses are consistent with the pre sent experimental bounds.

关键词： flavor symmetries models beyond the standard model non-standard-model neutrinos righthanded neutrinos discrete symmetries neutrino mass and mixing

A non-renormalizable B-L model with Q_(4)×Z_(4)×Z_(2) flavor symmetry for cobimaximal neutrino mixing

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Chinese Physics C 2021年第12期45卷 22-35页

作者： v.v.vien Theoretical Particle Physics and Cosmology Research Group Advanced Institute of Materials ScienceTon Due Thang UniversityHo Chi Minh CityVietnam Faculty of Applied Sciences Ton Due Thang UniversityHo Chi Minh CityVietnam

We construct a non-renormalizable gauge B-L model based on Q_(4)×Z_(4)×Z_(2) symmetry that successfully explains the cobimaximal lepton mixing *** active neutrino masses and both neutrino mass hierarchies are produced via the type-I seesaw mechanism at the *** model is predictive;hence,it reproduces the cobimaximal lepton mixing scheme,and the reactor neutrino mixing angle θ_(13) and the solar neutrino mixing angle θ_(12) can obtain best-fit values from recent experimental *** model also predicts the effective neut-rino mass parameters of mβ∈(8.80,9.05)mev and〈m_(ee)〉∈(3.65,3.95)mev for normal ordering(NO)and mβ ∈(49.16,49.2 l)mev and(mce)∈(48.59,48.67)mev for inverted ordering(IO),which are highly consistent with recent experimental constraints.

关键词： extensions of the electroweak Higgs sector neutrino mass and mixing nonstandard-model neutrinos right-handed neutrinos discrete symmetries

Multiscalar B-L extension based on S_(4)flavor symmetry for neutrino masses and mixing

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Chinese Physics C 2021年第4期45卷 181-191页

作者： v.v.vien H.N.Long Institute of Research and Development Duy Tan University182 Nguyen Van LinhDa Nang CityVietnam Department of Physics Tay Nguyen University567 Le DuanBuon Ma ThuotDakLakVietnam Theoretical Particle Physics and Cosmology Research Group Advanced Institute of Materials ScienceTon Duc Thang UniversityHo Chi Minh CityVietnam Faculty of Applied Sciences Ton Due Thang UnivesityHo Chi Minh CityVietnam

A multiscalar and nonrenormalizable B-L extension of the standard model(SM)with S_(4)symmetry which successfully explains the recently observed neutrino oscillation data is *** tiny neutrino masses and their hierarchies are generated via the type-I seesaw *** model reproduces the recent experiments of neutrino mixing angles and Dirac CP violating phase in which the atmospheric angle(θ_(23))and the reactor angle(θ_(13))get the best-fit values while the solar angle(θ_(12))and Dirac CP violating phase(δ)are in 3σrange of the best-fit value for the normal hierarchy(NH).For the inverted hierarchy(IH),θ13 gets the best-ft value andθ_(23)together withδare in the lσrange,whileθ12 is in 3δrange of the best-fit *** effective neutrino masses are pre-dicted to be(m_(ee))=6.81 mev for the NH and(m_(ee))=48.48 mev for the IH,in good agreement with the most re-cent experimental data.

关键词： neutrino mass and mixing extensions of electroweak Higgs sector flavor symmetries

Three colonic cancers,two sites of complete occlusion,one patient:A case report

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World Journal of Gastrointestinal Surgery 2021年第9期13卷 1095-1101页

作者： Eric Bergeron Thibaut Maniere Xuan vien Do Michael Bensoussan Eric De Broux Department of General Surgery Charles-LeMoyne HospitalGreenfield Park J4V2H1QuebecCanada Department of Gastroenterology Charles-LeMoyne HospitalGreenfield Park J4V2H1QuebecCanada Department of Medical Imaging Charles-LeMoyne HospitalGreenfield Park J4V2H1QuebecCanada Department of Digestive Surgery Centre Hospitalier Universitaire de MontréalMontreal H2X3E4QuebecCanada

BACKGROUND Synchronous colonic cancer incidence is uncommon,and awareness about this rare condition is improved ***,in the presence of acute colonic obstruction,investigation and management of synchronous colonic cancer can be difficult and *** SUMMARY A patient presented with acute colonic obstruction with impending rupture and complete examination of this patient revealed the presence of three colonic cancers,of which two were completely *** The presence of multiple colonic cancers must be ruled out in order to plan the best *** present the case with a review of literature and discuss the management of the case.

关键词： Colon cancer Synchronous cancers Colonoscopy Obstructive cancer Colostomy Case report

1D quasi-bound states in the continuum with large operation bandwidth in theω~k space for nonlinear optical applications

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Photonics Research 2022年第7期10卷 1575-1581页

作者： KAILI SUN HUI JIANG DMITRY ABYKOv vien vAN URIEL LEvY YANGJIAN CAI ZHANGHUA HAN Shandong Provincial Key Laboratory of Optics and Photonic Devices Center of Light Manipulation and ApplicationsSchool of Physics and ElectronicsShandong Normal UniversityJinan 250358China Image Processing Systems Institute—Branch of the Federal Scientific Research Centre“Crystallography and Photonics”of Russian Academy of Sciences Samara 443001Russia Department of Electrical and Computer Engineering University of AlbertaEdmontonAlberta T6G 2V4Canada Department of Applied Physics and Center for Nanoscience and NanotechnologyThe Hebrew University of JerusalemJerusalemIsrael

The phenomenon of bound state in the continuum(BIC)with an infinite quality factor and lifetime has emerged in recent years in photonics as a new tool to manipulate light-matter ***,most of the investigated structures only support BIC resonances at very few discrete points in theω~k *** when the BIC is switched to a quasi-BIC(QBIC)resonance through perturbation,its frequency will still be located within a narrow spectral band close to that of the original BIC,restricting their applications in many fields where random or multiple input frequencies beyond the narrow band are *** this work,we demonstrate that a new set of QBIC resonances can be supported by using a special binary grating consisting of two alternatingly aligned ridge arrays with the same period and zero-approaching ridge width difference on a slab *** QBIC resonances are distributed continuously over a broad band along a line in theω~k space and can thus be considered as 1 D *** the Q factors generally affected by the ridge difference,it is now possible to arbitrarily choose any frequencies on the dispersion line to achieve significantly enhanced light-matter interactions,facilitating many applications where multiple input wavelengths are required;e.g.,sum or difference frequency generations in nonlinear optics.

关键词： quasi nonlinear narrow