Torsion Discovery Potential and Its Discrimination at CERN LHC

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...

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Bibliographic Details
Published in:arXiv.org 2008-11
Main Authors: F M L de Almeida Jr, Nepomuceno, A A, M A B do Vale
Format: Article
Language:English
Subjects:
Bosons
Couplings
Fermions
Luminosity
Quantum gravity
Torsion
Online Access:Get full text
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Summary: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.
ISSN:2331-8422
DOI:10.48550/arxiv.0811.0291