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Unparticle self-interactions at the Large Hadron Collider
KTH, School of Engineering Sciences (SCI), Theoretical Physics.
KTH, School of Engineering Sciences (SCI), Theoretical Physics, Theoretical Particle Physics.ORCID iD: 0000-0002-3525-8349
2009 (English)In: Physical Review D. Particles, fields, gravitation and cosmology, ISSN 1550-7998, Vol. 80, no 11, 115014- p.Article in journal (Refereed) Published
Abstract [en]

We investigate the effect of unparticle self-interactions at the Large Hadron Collider (LHC). Especially, we discuss the three-point correlation function, which is determined by conformal symmetry up to a constant, and study its relation to processes with four-particle final states. These processes could be used as a favorable way to look for unparticle physics, and for weak enough couplings to the standard model, even the only way. We find updated upper bounds on the cross sections for unparticle-mediated 4 gamma final states at the LHC and novel upper bounds for the corresponding 2 gamma 2l and 4l final states. The size of the allowed cross sections obtained are comparably large for large values of the scaling dimension of the unparticle sector, but they decrease with decreasing values of this parameter. In addition, we present relevant distributions for the different final states, enabling the possible identification of the unparticle scaling dimension if there was to be a large number of events of such final states at the LHC.

Place, publisher, year, edition, pages
The American Physical Society , 2009. Vol. 80, no 11, 115014- p.
Keyword [en]
conformal-invariance, physics
National Category
Subatomic Physics
URN: urn:nbn:se:kth:diva-19097DOI: 10.1103/PhysRevD.80.115014ISI: 000273233000084OAI: diva2:337144
Swedish Research Council, 621-2005-3588Swedish Research Council, 621-2008-4210
QC 20100525Available from: 2011-06-22 Created: 2010-08-05 Last updated: 2011-06-22Bibliographically approved

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