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)
345 2018-03-16 16:00    Van der Waals Heterostructures from Quantum Transport to Ultrafast Optoelectronics file
344 2018-03-16 16:00    Van der Waals Heterostructures from Quantum Transport to Ultrafast Optoelectronics file
343 2015-11-06 16:30    Topological Dirac line nodes in centrosymmetric semimetals
342 2019-04-19 14:30    A family of finite-temperature electronic phase transitions in graphene multilayers file
341 2019-11-01 14:30    Squeezing the best out of 2D materials file
340 2017-09-26 11:00    Time-resolved ARPES study of Dirac and topological materials
339 2016-04-08 13:30    Theoretical Overview of Iron-based superconductors and its future
338 2019-06-28 13:30    Magnetic domains and domain wall conduction in pyrochlore iridate thin films and heterostructures file
337 2016-10-27 16:00    Terahertz Metal Optics
336 2016-11-18 10:30    Non-equilibrium many-body spin dynamics in diamond
335 2022-09-15 13:00    AdS black holes: a review
334 2022-05-18 16:00    Geometry, Algebra, and Quantum Field Theory
333 2022-05-19 16:00    Chasing Long Standing Neutrino Anomalies with MicroBooNE
332 2022-05-12 16:00    New frontiers of electroweak physics at the LHC
331 2024-01-16 16:00    [High Energy Theory Seminar] Towards quantum black hole microstates
330 2024-10-21 13:00    [Physics Seminar] “Non-Hermitian Point-Gap Topology in Junction Systems” file
329 2024-10-14 11:00    [RSVP, Oct 14th Mon] Ambassador of Hungary to Republic of Korea Special Lecture file
328 2019-12-27 15:00    The superconducting order parameter puzzle of Sr2RuO4 file
327 2019-12-27 15:00    The superconducting order parameter puzzle of Sr2RuO4 file
326 2019-09-26 16:00    Entanglement Swapping with Autonomous Polarization-Entangled Photon-Pairs from Warm Atomic Ensemble file