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Probing R-parity violating interactions from top-quark polarization at LHC

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Abstract

In the minimal supersymmetric standard model the R-parity violating interactions can induce anomalous top pair productions at the LHC through the t-channel process dRd̄R→tLt̄L by exchanging a slepton or by the u-channel process dRd̄R→tRt̄R exchanging a squark. Such top pair productions with a certain chirality cause top-quark polarization in the top pair events. We found that at the LHC, due to the large statistics, the statistical significance of the polarization observable, and thus the probing ability for the corresponding R-parity violating couplings, is much higher than at the Tevatron upgrade.

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Authors and Affiliations

  1. Department of Physics, Henan Normal University, Xinxiang, 453007, P.R. China

    Peiying Li, Gongru Lu & Huanjun Zhang

  2. CCAST (World Laboratory), P.O. Box 8730, Beijing, 100080, P.R. China

    Jin Min Yang

  3. Institute of Theoretical Physics, Academia Sinica, P.O. Box 2735, Beijing, 100080, P.R. China

    Jin Min Yang & Huanjun Zhang

Authors
  1. Peiying Li
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  2. Gongru Lu
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  3. Jin Min Yang
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  4. Huanjun Zhang
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Corresponding author

Correspondence to Jin Min Yang.

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PACS

14.65.Ha; 14.80.Ly

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Li, P., Lu, G., Yang, J. et al. Probing R-parity violating interactions from top-quark polarization at LHC. Eur. Phys. J. C 51, 163–168 (2007). https://doi.org/10.1140/epjc/s10052-007-0290-y

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  • DOI: https://doi.org/10.1140/epjc/s10052-007-0290-y

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