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)
446 2016-03-11 13:30    Topological phases of matter in nonequilibrium: Topology of the Wannier-Stark ladder
445 2018-11-01 16:00    Direct holography from a single snapshot file
444 2022-08-18 10:00    Disorder-driven phase transition in the second-order non-Hermitian skin effect
443 2023-04-27 11:00    Inverse Shapiro steps and coherent quantum phase slip in superconducting nanowires
442 2015-07-16 16:00    Next-generation ultrafast laser technology for nonlinear optics and strong-field physics
441 2018-10-26 16:00    Coexisting triple-point and nodal-line topological magnons and thermal Hall effect in pyrochlore iridates file
440 2017-03-24 14:30    Topological Dynamics
439 2015-10-15 10:00    Development of Large-Bore, High Field Magnets at the NHMFL
438 2023-06-22 16:00    [CAPP Seminar] The muon g-2 puzzle file
437 2016-05-19 15:00    The CERN Resonant WISP Search: Development, Results and Lesson-Learned
436 2016-07-08 11:00    Isostatic magnetism
435 2015-11-23 13:30    What's Beyond the Standard Model? Lessons from Run I and what might come in Run II
434 2017-02-01 14:00    Quantum electron optics using flying electrons
433 2019-09-10 15:00    Two-Stage Kondo Effect file
432 2017-11-03 14:30    Quantum Resistor-Capacitor Circuit with Majorana Edge States file
431 2019-07-30 16:00    Dirac fermions and flat bands in correlated kagome metals file
430 2023-07-11 11:00    Ordered phases, non-Fermi liquid, and quantum criticality driven by entanglement between multipoles and conduction electrons
429 2017-04-28 16:00    Carbon nanotubes coupled to superconducting impedance matching circuits
428 2016-09-29 16:00    Exploring the phase diagram of BaBiO3: epic voyage of just another bad trip?
427 2019-06-12 15:00    The relation between free and interacting fermionic SPT phases file