Search for W' signal in single top quark production at the LHC

  • Heavy charged gauge bosons are proposed in some theories beyond the standard model. We explore the discovery potential for m W'→tb with top quark semi-leptonic decay at the LHC. We concentrate on the new physics signal search with the deviation from the standard model prediction if the resonance peak of m W' cannot be observed directly. Signal events with two jets plus one charged lepton and missing energy are simulated, together with the dominant standard model backgrounds. In this paper, it is found that suitable cuts on the kinematic observables can effectively suppress the standard model backgrounds, so that it is possible to search for a m W' signal at the LHC if its mass is less than 6.6 TeV.
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Get Citation
Fei Huang, Hong-Lei Li, Shi-Yuan Li, Zong-Guo Si, Wei Su and Zhong-Juan Yang. Search for W' signal in single top quark production at the LHC[J]. Chinese Physics C, 2018, 42(3): 033103. doi: 10.1088/1674-1137/42/3/033103
Fei Huang, Hong-Lei Li, Shi-Yuan Li, Zong-Guo Si, Wei Su and Zhong-Juan Yang. Search for W' signal in single top quark production at the LHC[J]. Chinese Physics C, 2018, 42(3): 033103.  doi: 10.1088/1674-1137/42/3/033103 shu
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Received: 2017-11-24
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    Supported by the National Natural Science Foundation of China (NSFC) (11325525, 11635009, 11775130, 11447009, 11305049) and Natural Science Foundation of Shandong Province (ZR2017JL006, ZR2017MA002)

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Search for W' signal in single top quark production at the LHC

  • 1.  School of Physics, Shandong University, Jinan 250100, China
  • 2.  School of Physics and Technology, University of Jinan, Jinan 250022, China
  • 3. School of Physics, Shandong University, Jinan 250100, China
  • 4. CAS Key Laboratory of Theoretical Physics, Institute of Theoretical Physics, Chinese Academy of Sciences, Beijing 100190, China
  • 5. CAS Key Laboratory of Theoretical Physics, Institute of Theoretical Physics, Chinese Academy of Sciences, Beijing 100190, China
  • 6. School of Physics, University of Chinese Academy of Sciences, Beijing 100049, China
Fund Project:  Supported by the National Natural Science Foundation of China (NSFC) (11325525, 11635009, 11775130, 11447009, 11305049) and Natural Science Foundation of Shandong Province (ZR2017JL006, ZR2017MA002)

Abstract: Heavy charged gauge bosons are proposed in some theories beyond the standard model. We explore the discovery potential for m W'→tb with top quark semi-leptonic decay at the LHC. We concentrate on the new physics signal search with the deviation from the standard model prediction if the resonance peak of m W' cannot be observed directly. Signal events with two jets plus one charged lepton and missing energy are simulated, together with the dominant standard model backgrounds. In this paper, it is found that suitable cuts on the kinematic observables can effectively suppress the standard model backgrounds, so that it is possible to search for a m W' signal at the LHC if its mass is less than 6.6 TeV.

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