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arXiv · 1010.2988

Charge asymmetry ratio as a probe of quark flavour couplings of resonant particles at the LHC

C. H. Kom·W. J. Stirling
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Abstract

We show how a precise knowledge of parton distribution functions, in particular those of the u and d quarks, can be used to constrain a certain class of New Physics models in which new heavy charged resonances couple to quarks and leptons. We illustrate the method by considering a left-right symmetric model with a W' from a SU(2)_R gauge sector produced in quark-antiquark annihilation and decaying into a charged lepton and a heavy Majorana neutrino. We discuss a number of quark and lepton mixing scenarios, and simulate both signals and backgrounds in order to determine the size of the expected charge asymmetry. We show that various quark-W' mixing scenarios can indeed be constrained by charge asymmetry measurements at the LHC, particularly at 14 TeV centre of mass energy.

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C. H. Kom, W. J. Stirling. 2010-10-14. Charge asymmetry ratio as a probe of quark flavour couplings of resonant particles at the LHC. https://doi.org/10.1140/epjc%2Fs10052-011-1546-0

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