장소 | #1323(E6-2, 1st fl.) |
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일시 | Sep. 22, 2016(Thu), 3:30 PM |
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.
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공지 | 2019/09/02 - 12/09 | Seminar Room 1501 | 이호성 박사 (한국표준과학연구원) and etc. | Fall 2019: Physics Colloquium |
320 | #1323(E6-2. 1st fl.) | Jul. 10th (Mon), 4pm | Dr. Duk Young Kim Los Alamos National Laboratory |
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319 | - | RM. 1323, E6-2 |
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318 | 2009/02/23-05/04 | E6, 1501 | 안종현교수(성균관대) 외 |
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317 | 2009/09/07-11/30 | E6, 1501 | 이주영박사(KIAS) 외 |
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316 | 2009/10/21, 4PM | E6, 1501 | 최석봉교수(서울대) | Interdimensional Universality of Dynamic Interfaces |
315 | 2010/02/08-05/03 | E6, 1501 | 최인수교수(서울대) 외 |
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314 | 2010/02/14-05/09 | E6, 1501 | 황철주(주성엔지니어링 사장) 외 |
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313 | 2010/09/06-12/06 | E6, 1501 | 조호진기자(조선일보) 외 |
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312 | 2011/05/16, 4PM | E6, 1501 | 서민교교수(KAIST) | Photonics with surface plasmon polaritons |
311 | 2011/09/03-12/06 | E6, 1501 | 김용균교수(한양대) 외 |
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310 | 2012/02/13-05/14 | E6, 1501 | Kenji Ohmori (Photo-Molecular Science, IMS) | Physics Colloquium : 2012 Spring |
309 | 2012/04/02, 4PM | E6, 1501 | Yong Hee Jeong | A new route to ferroelectricity in magnetic spinels: a case of Co2MnO4 |
308 | 2013/03/11-06/10 | E6, 1501 | 강명수교수(KAIST) 외 | Physics Colloquium : 2013 Spring |
307 | 2013/09/09-12/09 | E6, 1501 | 박혁규교수(부산대) 외 | Physics Colloquium : 2013 Fall |
306 | 2014/03/10-06/09 | E6, 1501 | 신용일교수(서울대) |
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305 | 2014/05/28, PM5 | KI Building, Matrix Hall | 이웅범 대표이사(LG이노텍) | 부품소재산업이 미래다 |
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303 | 2015/03/04, 12PM | 1323호, E6-2 | Prof. Choi Hak-Soo(Harvard) |
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