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Heavy colored resonances in \( t\bar t + {\text{jet}} \) at the LHC

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Abstract

The LHC is the perfect environment for the study of new physics in the top quark sector. We study the possibility of detecting signals of heavy color-octet vector resonances, through the charge asymmetry, in \( t\bar t + {\text{jet}} \) events. Besides contributions with the \( t\bar t \) pair in a color-singlet state, the asymmetry gets also contributions which are proportional to the color factor f abc 2. This process is particularly interesting for extra-dimensional models, where the inclusive charge asymmetry generated by Kaluza-Klein excitations of the gluon vanishes at the tree level. We find that the statistical significance for the measurement f such an asymmetry is sizable for different values of the coupling constants and already at low energies.

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Authors and Affiliations

  1. Instituto de Física Corpuscular, UVEG - Consejo Superior de Investigaciones Cientificas, Apartado de Correos 22085, E-46071, Valencia, Spain

    Paola Ferrario & Germán Rodrigo

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  1. Paola Ferrario
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  2. Germán Rodrigo
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Correspondence to Paola Ferrario.

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ArXiv ePrint: 0912.0687

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Ferrario, P., Rodrigo, G. Heavy colored resonances in \( t\bar t + {\text{jet}} \) at the LHC. J. High Energ. Phys. 2010, 51 (2010). https://doi.org/10.1007/JHEP02(2010)051

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