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)
175 2023-02-28 11:00    Topotactic redox engineering toward novel material file
174 2023-03-02 11:00    Probing Anomalies of Non-Invertible Symmetries with Symmetry TFTs
173 2023-03-16 16:00    (광학분야 세미나) Investigation of 3D cell mechanics using refractive-index tomography
172 2023-03-16 16:00    2023 봄학기 광학분야 및 응집물리 특별세미나 전체 일정 file
171 2023-03-17 11:00    (응집물리 세미나)Operando electron microscopy investigation of domain dynamics in twisted van der Waals materials file
170 2023-03-22 16:00    (High Energy Theory Seminar) Boltzmann or Bogoliubov? A Case of Gravitational Particle Production
169 2023-03-24 11:00    (응집물리 세미나)Floquet simulators of topological surface states in isolation
168 2023-03-27 15:00    A coherent mechanical oscillator pumped by a suspended quantum dot file
167 2023-03-30 16:00    Detecting axions with chiral magnetic effects file
166 2023-03-30 16:00    (광학분야 세미나)Scalable quantum entanglement in trapped-ions based quantum computer
165 2023-04-04 16:00    Chiral Magnetism: A Geometric Perspective
164 2023-04-05 16:00    [High Energy Theory Seminar]Anomalies of Discrete 1-Form Symmetries in QCD-like Theories
163 2023-04-06 16:00    (광학분야 세미나)Nanophotonics-based approaches to explore Berry physics
162 2023-04-13 11:00    [High Energy Theory Seminar]Noninvertible Gauss Law and Axions
161 2023-04-14 12:00    (응집물리 세미나)Exotic quantum phenomena in two-dimensional materials file
160 2023-04-27 11:00    Inverse Shapiro steps and coherent quantum phase slip in superconducting nanowires
159 2023-04-27 16:00    (광학분야 세미나)On-chip spectrometers based on CMOS image sensors
158 2023-04-28 11:00    Tkachenko wave: From the modern field theory viewpoint
157 2023-05-03 16:00    Probing microscopic origins of axions by the chiral magnetic effect
156 2023-05-12 11:00    (응집물리 세미나)Interlayer conductivity and plasmon in weakly coupled layered systems