Using the Higgs boson to probe the littlest Higgs model with T-parity through $Z_H{W}_H$ production at the LHC

Abstract

In the littlest Higgs model with T-parity, the production cross section of the T-odd heavy gauge boson pair $Z_H{W}_H$ is quite sizable at the LHC. In addition, both the $W_H$ and $Z_H$ bosons have almost exclusively one decay channel into $W{A}_H$ and $H{A}_H$ respectively, where the dark matter candidate $A_H$ yields a large missing energy signal. Upon the discovery of the Higgs boson at 125 GeV, we study the discovery sensitivity of the final state $pp\to b\bar{b}l+\text{/}{E}_T$ to probe the model at the LHC. We find that the standard model backgrounds are manageable by applying suitable kinematic cuts. The LHC running at $\sqrt{s}=14$ TeV with a 100/fb total luminosity is sensitive to the model if the symmetry breaking scale $f$ is below about 850 GeV.

references added: 12 pages, 2 figures, 1 table

References in corpus (21)

• Observation of a new particle in the search for the Standard Model Higgs boson with the ATLAS detector at the LHC
• Observation of a new boson at a mass of 125 GeV with the CMS experiment at the LHC
• Combined results of searches for the standard model Higgs boson in pp collisions at sqrt(s) = 7 TeV
• Combined search for the Standard Model Higgs boson using up to 4.9 fb-1 of pp collision data at sqrt(s) = 7 TeV with the ATLAS detector at the LHC
• Higgs After the Discovery: A Status Report
• Evidence for a particle produced in association with weak bosons and decaying to a bottom-antibottom quark pair in Higgs boson searches at the Tevatron
• Confronting the MSSM and the NMSSM with the Discovery of a Signal in the two Photon Channel at the LHC
• A Higgs Conundrum with Vector Fermions
• Phenomenology of Littlest Higgs Model with T-parity: including effects of T-odd fermions
• MSSM Higgs Bosons at The LHC
• Search for a heavy top-quark partner in final states with two leptons with the ATLAS detector at the LHC
• Hunting for the Top Partner in the Littlest Higgs Model with T-parity at the LHC
• Novel Collider Signatures for Little Higgs Dark Matter Models
• Can the 125 GeV Higgs be the Little Higgs?
• Phenomenology of Mirror Fermions in the Littlest Higgs Model with T-Parity
• Little Higgs theory confronted with the LHC Higgs data
• Collider Signature of T-quarks
• Indirect Detection of Little Higgs Dark Matter
• LHC signals of T-odd heavy quarks in the Littlest Higgs model
• Signatures of Extra Gauge Bosons in the Littlest Higgs Model with T-parity at Future Colliders
• Distinguishing Various Models of the 125 GeV Boson in Vector Boson Fusion

Cited by in corpus (1)

• Constraining parameter space of the Little Higgs model by data of tera-Z factory and ILC