Higher dimensional operators in standard model effective field theory

admin   2018-03-02 10:55:42   4064

报告题目:Higher dimensional operators in standard model effective field theory
报告时间:2018-03-08 10:00 (星期四)
报告人:Prof. Yi Liao(School of Physics, Nankai University)


Effective field theory is a general approach to describing physics at lowenergy. In this talk I’ll start with the basic ideas of the standard modeleffective field theory (SMEFT). Then I’ll focus on the three subjects that wehave been working on in the past two years. We have made a complete analysis ondimension-seven operators in SMEFT and renormalized a subset of them thatviolates both lepton and baryon numbers. We have developed a simple powercounting rule that controls the leading contribution to one-loop anomalousdimensions of higher dimensional operators. Finally we discuss new higherdimensional operators that arise when the standard model is extended by sterileneutrinos with a mass below the electroweak scale. 




1.  YiLiao, Xiao-Dong Ma, Renormalization GroupEvolution of Dimension-seven Baryon- and Lepton-number-violating Operators,JHEP 1611 (2016) 043 

2.  Ran Ding, Yi Liao, Ji-Yuan Liu, Kai Wang, ComprehensiveConstraints on a Spin-3/2 Singlet Particle as a Dark Matter Candidate, JCAP1305 (2013) 028 

3.  Yi Liao, Cascade Seesaw for Tiny NeutrinoMass, JHEP 1106 (2011) 098 

4.  Yi Liao, Unique Neutrino Mass Operator atany Mass Dimension, Phys. Lett. B694 (2011) 346 

5.  Yi Liao, Ji-Yuan Liu, Long-range ElectronSpin-spin Interactions from Unparticle Exchange, Phys. Rev. Lett. 99 (2007)191804 

6.  Yi Liao, Klaus Sibold, Time orderedperturbation theory on noncommutative space-time. 2. Unitarity, Eur.Phys.J.C25 (2002) 479 

7.  Yi Liao, Xiaoyuan Li, Nonunitarity of CKMmatrix from the vector singlet quark mixing and neutron electric dipole moment,Phys. Lett. B503 (2001) 301 

8.  S. Dittmaier, M. Kramer, Y. Liao, M. Spira, P.M. Zerwas, Higgs radiation off top quarks in e+ e- collisions, Phys. Lett. B441(1998) 383


地址:long8唯一官方网站北洋园校区32教学楼B区 | 邮编:300350Designed by 2014级long8唯一本科生蒋啸寒
Copyright © 2022 long8唯一官方网站. All rights reserved. | Designed by 2014级long8唯一本科生蒋啸寒