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Anomalous top-quark coupling effects in rare B and K decays

  • Review
  • High-Energy Physics
  • Published:
Chinese Science Bulletin

Abstract

The Large Hadron Collider at CERN is performing direct searches for top-quark anomalous flavor-changing neutral current (FCNC) processes. However, these processes may be correlated closely with the low-energy rare \(B\) and \(K\) meson decays. In this paper, we review the anomalous top-quark coupling effects in these low-energy flavor transitions, summarize the flavor constraints and discuss their implications for direct detection of top-FCNC processes at the Large Hadron Collider.

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Notes

  1. The scale \(\varLambda \) is unknown. It may be the grand unified theory (GUT) scale (\(\sim 10^{16}\,{\mathrm{GeV}}\)) or an intermediate mass scale. For example, in the SM extension with a heavy \(Z^\prime \) boson, \(\varLambda \) is the mass of \(Z^\prime \) boson. In addition, to stabilize the electroweak scale, \(\varLambda \sim {\mathrm{TeV}}\) is required [33]. Flavor physics, in particular measurements of meson mixing, also puts severe bounds on the scale \(\varLambda \) [34].

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Acknowledgments

This work was supported by the National Natural Science Foundation of China (11225523 and 11221504). Xing-Bo Yuan was also supported by the CCNU-QLPL Innovation Fund (QLPL2011P01) and the Excellent Doctorial Dissertation Cultivation Grant from Central China Normal University.

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Authors and Affiliations

  1. Institute of Particle Physics, Central China Normal University, Wuhan , 430079, China

    Ya-Dong Yang & Xing-Bo Yuan

  2. Key Laboratory of Quark and Lepton Physics, Ministry of Education, Wuhan , 430079, China

    Ya-Dong Yang & Xing-Bo Yuan

Authors
  1. Ya-Dong Yang
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  2. Xing-Bo Yuan
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Corresponding author

Correspondence to Ya-Dong Yang.

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SPECIAL TOPIC: Heavy-Flavor Physics and New Physics

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Yang, YD., Yuan, XB. Anomalous top-quark coupling effects in rare B and K decays. Chin. Sci. Bull. 59, 3760–3770 (2014). https://doi.org/10.1007/s11434-014-0555-4

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  • DOI: https://doi.org/10.1007/s11434-014-0555-4

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