4.5 Article

Up asymmetries from exhilarated composite flavor structures

期刊

JOURNAL OF HIGH ENERGY PHYSICS
卷 -, 期 2, 页码 -

出版社

SPRINGER
DOI: 10.1007/JHEP02(2013)149

关键词

Phenomenology of Field Theories in Higher Dimensions

资金

  1. FONCYT [PICT-2010-1737]
  2. CONICET [PIP 114220100100319]
  3. EPLANET [PIRSES-2009-GA-246806]
  4. European Commission [226371]
  5. UNILHC [PITN-GA-2009-237920]
  6. GIF
  7. Gruber foundation
  8. IRG
  9. ISF
  10. Minerva

向作者/读者索取更多资源

We present a class of warped extra dimension (composite Higgs) models which conjointly accommodates the t (t) over bar forward-backward asymmetry observed at the Tevatron and the direct CP asymmetry in singly Cabibbo suppressed D decays first reported by the LHCb collaboration. We argue that both asymmetries, if arising dominantly from new physics beyond the Standard Model, hint for a flavor paradigm within partial compositeness models in which the right-handed quarks of the first two generations are not elementary fields but rather composite objects. We show that this class of models is consistent with current data on flavor and CP violating physics, electroweak precision observables, dijet and top pair resonance searches at hadron colliders. These models have several predictions which will be tested in forthcoming experiments. The CP asymmetry in D decays is induced through an effective operator of the form ((u) over barc) V +A((s) over bars) V + A at the charm scale, which implies a larger CP asymmetry in the D-0 -> K+ K- rate relative the D-0 -> pi(+)pi(-)channel. This prediction is distinctive from other Standard Model or dipole-based new physics interpretation of the LHCb result. CP violation in D-(D) over bar mixing as well as an an excess of dijet production of the LHC are also predicted to be observed in a near future. A large top asymmetry originates from the exchange of an axial resonance which dominantly produces left-handed top pairs. As a result a negative contribution to the lepton-based forward-backward asymmetry in t _ t production, as well as (sic)(10%) forward-backward asymmetry in b (b) over bar production above mb (b) over bar similar or equal to 600GeV at the Tevatron is expected.

作者

我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。

评论

主要评分

4.5
评分不足

次要评分

新颖性
-
重要性
-
科学严谨性
-
评价这篇论文

推荐

暂无数据
暂无数据