Probing the dilaton in central exclusive processes at the LHC

Abstract

The existence of a dilaton as a pseudo-Nambu-Goldstone boson in spontaneous breaking of scale symmetry is predicted in beyond standard model theories in which electroweak symmetry is broken via strongly coupled conformal dynamics. Such a particle is expected to have a mass below the conformal symmetry breaking scale $f$ and couplings to standard model particles similar to those of the SM Higgs boson. In this paper we estimate, for the first time, the dilaton production in exclusive processes considering Pomeron - Pomeron ($\pom \pom$) and photon - photon ($\gamma \gamma$) interactions, which are characterized by two rapidity gaps and intact hadrons in the final state. Our results indicate that if the dilaton is massive ($M_{\chi }\ge 2M_W$), the study of dilaton production by $\pom \pom$ interactions in $pp$ collisions can be useful to determine its mass and the conformal energy scale.

7 pages, 3 figures, 1 table

References in corpus (9)

• Parton distributions for the LHC
• EPS09 - a New Generation of NLO and LO Nuclear Parton Distribution Functions
• The Physics of Ultraperipheral Collisions at the LHC
• Central Exclusive Particle Production at High Energy Hadron Colliders
• Observation of exclusive charmonium production and gamma+gamma to mu+mu- in p+pbar collisions at sqrt{s} = 1.96 TeV
• Central exclusive production within the Durham model: a review
• Central exclusive production of longlived gluinos at the LHC
• Central exclusive quark-antiquark dijet and Standard Model Higgs boson production in proton-(anti)proton collisions
• Diffractive $Z$ boson pair production at LHC in the large extra dimensions scenario

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• Constraining the photon flux in two-photon processes at the LHC
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• Dark photons from pions produced in ultraperipheral $PbPb$ collisions
• Production of Tensor Glueball in Ultraperipheral $pp$, $AuAu$ and $PbPb$ Collisions