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Torsion Discovery Potential and Its Discrimination at CERN LHC

  • Almeida, F. M. L. de
  • Nepomuceno, A. A.
  • Vale, M. A. B. do
Published Article
Publication Date
Nov 03, 2008
Submission Date
Nov 03, 2008
DOI: 10.1103/PhysRevD.79.014029
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Torsion models constitute a well known class of extended quantum gravity models. In this paper we study some phenomenological consequences of a torsion field interacting with fermions at LHC. A torsion field could appear as a new heavy state characterized by its mass and couplings to fermions. These new states will form a resonance decaying into difermions, as occurs in many extensions of the Standard Model, such as models predicting the existence of additional neutral gauge bosons, usually named $Z^\prime$. Using the dielectron channel we evaluate the integrated luminosity needed for a $5\sigma$ discovery as a function of the torsion mass, for different coupling values. We also calculate the luminosity needed for discriminate, with 95% C.L., the two possible different torsion natures. Finally, we show that the observed signal coming from the torsion field could be distinguished from a signal coming from a new neutral gauge boson, provided there is enough luminosity.


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