visual
visual

세미나

  • HOME
  • >
  • 소식
  • >
  • 세미나
날짜 2016-09-22 15:30 
일시 Sep. 22, 2016(Thu), 3:30 PM 
장소 #1323(E6-2, 1st fl.) 
연사 Dr. Haiyang Yan (Institute of Nuclear Physics and Chemistry) 

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 장소 제목
공지 2022-11-25 11:00  E6-2 #1323  [Update 세미나영상](응집물리 세미나) DMFT+ NRG: From models to real materials, from local to nonlocal correlations
437 2009-02-23 16:00  E6, 1501  Physics Colloquium : 2009 Spring file
436 2009-09-07 16:00  E6, 1501  Physics Colloquium : 2009 Fall file
435 2009-10-21 16:00  E6, 1501  Interdimensional Universality of Dynamic Interfaces
434 2010-02-08 16:00  E6, 1501  Physics Ciolloquium : 2010 Spring file
433 2010-02-14 16:00  E6, 1501  Physics Colloquium - 2011 Spring file
432 2010-09-06 16:00  E6, 1501  Physics Colloquium : 2010 Fall file
431 2011-05-16 16:00  E6, 1501  Photonics with surface plasmon polaritons
430 2011-09-03 16:00  E6, 1501  Physics Colloquium : 2011 Fall file
429 2012-02-13 16:00  E6, 1501  Physics Colloquium : 2012 Spring
428 2012-04-02 16:00  E6, 1501  A new route to ferroelectricity in magnetic spinels: a case of Co2MnO4
427 2013-03-11 16:00  E6, 1501  Physics Colloquium : 2013 Spring
426 2013-09-09 16:00  E6, 1501  Physics Colloquium : 2013 Fall
425 2014-03-10 16:00  E6, 1501  Physics Colloquium : 2014 Spring file
424 2014-05-28 17:00  KI Building, Matrix Hall  부품소재산업이 미래다
423 2014-12-22 14:00  E6, Rm1319  Dynamics of molecular motors: Power stroke vs Brownian ratchet file
422 2015-03-04 12:00  1323호, E6-2  Bioimaging and Biosensing Using Near-Infrared Fluorescence file
421 2015-03-09 16:00  E6, 1501  Physics Colloquium : 2015 Spring file
420 2015-03-13 14:00  Connect Room, KI Bldg.  The 15th Innovative Workshop on Soft/Bio Materials file
419 2015-06-03 12:00  Room 101, E11  The First Wednesday Multidisciplinary Forum file
418 2015-07-15 14:00  E6-2,1323  Electronic and optical properties of titanate-based oxide superlattices