visual
visual

세미나

  • HOME
  • >
  • 소식
  • >
  • 세미나
날짜 2016-09-22 15:30 
연사  
장소 #1323(E6-2, 1st fl.) 


Polarized 3He, Polarized Neutrons and New Interactions beyond the Standard Model

 

Dr. Haiyang Yan (Institute of Nuclear Physics and Chemistry)
Sep. 22, 2016(Thu), 3:30 PM,  #1323(E6-2, 1st fl.)


Polarized spins are good probes to detect spin dependent new interactions beyond the standard model. In recent years, various models of new physics beyond the standard model have been studies in which new massive particles such as axion, familon,and majoron, etc. were theoretically introduced. Many of these exotic new interactions are spin dependent. Spin polarized neutron beam, atom beam or noble gases are good probes to detect these new interactions. We used spin rotation of polarized neutrons in liquid Helium to search for spin-velocity dependent new interactions. The new upper bound we obtained is more than 7 orders of magnitude more stringent than the existing laboratory constraints for interaction ranges below 1 m. We Searched for New Spin and Velocity-Dependent Interactions by spin relaxation of polarized 3He Gas. Using the best available measured T2 of polarized 3He gas atoms as the polarized source and the Earth as an unpolarized source, we obtain constraints on two new interactions. We present a new experimental upper bound on possible vector-axial-vector (VVA) type interactions for ranges between 1 and 108m.

번호 날짜 연사 제목
공지 2025-02-24 16:00    2025년 봄학기 콜로키움 안내
공지 2025-02-27 16:00    2025년 봄 물리학과 특별세미나 (광학/응집물리 분야)
226 2017-11-03 16:00    Expedition to the Kitaev Quantum Spin Liquid: Hunting for Majorana fermions file
225 2016-11-29 16:00    Symmetry Protected Kondo Metals and Their Phase Transitions
224 2022-10-26 10:00    Replica Higher-Order Topology of Hofstadter Butterflies in Twisted Bilayer Graphene
223 2016-10-07 13:30    “Symmetry and topology in transition metal dichalcogenide?”
222 2022-11-24 16:00    Probing fundamental physics by mapping the mm and sub-mm sky
221 2023-09-18 16:00    [CAPP Seminar] Searching for axions in quantum vacuum birefringence file
220 2019-04-26 16:00    Robust Quantum Metrology using Strongly Interacting Spin Ensembles and Quantum Convolutional Neural Network file
219 2021-12-03 14:30    Topological Spin Textures: Skyrmions and Beyond file
218 2019-11-05 16:00    Study on nanomaterials by the development of ultrahigh resolution laser-photoelectron microscopy (PEEM) file
217 2019-11-20 16:00    Correlation between superconducting transition temperature and critical current density in irradiated iron-based superconductors file
216 2020-02-13 16:30    Enhanced Light-Matter Interactions in Graphene with Noble Metal Plasmonic Structures file
215 2022-06-10 14:30    Combinatorial strategy for condensed matter physics: study on rare earth hexaborides thin films file
214 2019-10-31 10:00    Kondo meets Hubbard: Impurity physics for correlated lattices file
213 2018-04-09 11:00    Doublon-holon origin of the subpeaks at the Hubbard band edges file
212 2019-10-29 16:00    Particles and Gravity via String Geometry file
211 2018-06-01 11:00    Topological phases in low-dimensional quantum materials file
210 2019-03-29 14:30    Epitaxial Multifunctional Oxide Thin Films for Novel Electronics file
209 2016-01-26 14:00    Electrochemistry on Nano- and Atomic Levels: Scanning Probe Microscopy Meets Deep Data
208 2023-10-11 16:00    [High Energy Theory Seminar] Axion Magnetic Resonance
207 2023-09-21 16:00    [CAPP seminar] Axion Magnetic Resonance file