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题名: New color-octet axial vector boson revisited
作者: Wang, H ;  Wang, YK ;  Xiao, B ;  Zhu, SH
刊名: PHYSICAL REVIEW D
出版日期: 2011
卷号: 84, 期号:9, 页码:94019
关键词: FORWARD-BACKWARD ASYMMETRY ;  T(T)OVER-BAR ASYMMETRY ;  PAIR PRODUCTION ;  TEVATRON ;  LHC ;  DISTRIBUTIONS ;  CONSTRAINTS ;  COLLISIONS ;  PHYSICS ;  CDF
学科分类: Physics
通讯作者: Wang, H (reprint author), Beijing Normal Univ, Dept Astron, Beijing 100871, Peoples R China.
部门归属: [Wang, Hao] Beijing Normal Univ, Dept Astron, Beijing 100871, Peoples R China; [Wang, You-kai; Xiao, Bo; Zhu, Shou-hua] Peking Univ, Inst Theoret Phys, Beijing 100871, Peoples R China; [Wang, You-kai; Xiao, Bo; Zhu, Shou-hua] Peking Univ, State Key Lab Nucl Phys & Technol, Beijing 100871, Peoples R China; [Wang, You-kai] Chinese Acad Sci, Inst Theoret Phys, Beijing 100190, Peoples R China; [Zhu, Shou-hua] Peking Univ, Ctr High Energy Phys, Beijing 100871, Peoples R China
英文摘要: In this paper we reexamine how to utilize the previous proposed color-octet axial-vector boson Z(C) to explain the 3: 4 sigma anomaly of t (t) over bar forward-backward (FB) asymmetry A(FB) for m(t (t) over bar) > 450 GeV observed by CDF. Our numerical results indicate that the best-fit parameters are g(A)(q) = 0: 07, g(A)(Q) 3, and M(C) 440 GeV, which are obtained by fitting the mass dependent AFB and total cross section data provided by a recent CDF measurement. Here g(A)(q) (g(A)(Q)) and MC are the axial couplings among Z(C) with the first two (the third) generation quarks, and Z(C) mass, respectively. We also calculate one-side forward-backward asymmetry AOFB for top and bottom quark pair production at the LHC, focusing on the new contributions from Z(C). Our studies show that AOFB can be utilized to measure the properties of new particle Z(C).
资助者: Natural Sciences Foundation of China [11075003]
收录类别: SCI
原文出处: 查看原文
语种: 英语
WOS记录号: WOS:000297126000001
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/14232
Appears in Collections:理论物理所2011年知识产出_期刊论文

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Recommended Citation:
Wang, H,Wang, YK,Xiao, B,et al. New color-octet axial vector boson revisited[J]. PHYSICAL REVIEW D,2011,84(9):94019.
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