$Z^{\prime }$ discovery potential at the LHC in the minimal $B-L$ extension of the Standard Model

Abstract

We present the Large Hadron Collider (LHC) discovery potential in the $Z^{\prime }$ sector of a $U(1{)}_{B-L}$ enlarged Standard Model (that also includes three heavy Majorana neutrinos and an additional Higgs boson) for $\sqrt{s}=7$, 10 and 14 TeV centre-of-mass (CM) energies, considering both the $Z_{B-L}^{\prime }\to e^{+}{e}^{-}$ and $Z_{B-L}^{\prime }\to {\mu }^{+}{\mu }^{-}$ decay channels. The comparison of the (irreducible) backgrounds with the expected backgrounds for the D$Ø$ experiment at the Tevatron validates our simulation. We propose an alternative analysis that has the potential to improve the D$Ø$ sensitivity. Electrons provide a higher sensitivity to smaller couplings at small $Z_{B-L}^{\prime }$ boson masses than do muons. The resolutions achievable may allow the $Z_{B-L}^{\prime }$ boson width to be measured at smaller masses in the case of electrons in the final state. The run of the LHC at $\sqrt{s}=7$ TeV, assuming at most $\int \mathcal{L}\sim 1$ fb${}^{-1}$, will be able to give similar results to those that will be available soon at the Tevatron in the lower mass region, and to extend them for a heavier $M_{Z^{\prime }}$.

33 Pages, 14 figures and 8 tables. Updated Tevatron bounds and comparison to CDF and D0; improved methodology explanation; commented on inclusion of detector effects. Results changed only for the comparison to Tevatron. Corrected typos and updated bibliography to match published version in EPJC

References in corpus (8)

• The Minimal Set of Electroweak Precision Parameters
• Low scale B-L extension of the Standard Model at the LHC
• Observables sensitive to absolute neutrino masses: A reappraisal after WMAP-3y and first MINOS results
• Testability of Type I Seesaw at the CERN LHC: Revealing the Existence of the B-L Symmetry
• Signatures for right-handed neutrinos at the Large Hadron Collider
• Search for a heavy neutral gauge boson in the dielectron channel with 5.4 fb-1 of ppbar collisions at sqrt(s) = 1.96 TeV
• Searching for Extra Z' from Strings and Other Models at the LHC with Leptoproduction
• Tree Level Unitarity Bounds for the Minimal B-L Model

Cited by in corpus (9)

• The Present and Future Status of Heavy Neutral Leptons
• Neutrino Mass and Dark Matter from Gauged $U(1{)}_{B-L}$ Breaking
• Right-handed Sneutrino Dark Matter in Supersymmetric B-L Model
• High-energy EFT probes with fully differential Drell-Yan measurements
• LHC signals of the $SO(5)\times U(1)$ gauge-Higgs unification
• Natural $Z^{\prime }$ model with an inverse seesaw and leptonic dark matter
• Implications of gauge kinetic mixing on Z' and slepton production at the LHC
• Probing the electromagnetic dipole moments of the tau-neutrino in the $U(1{)}_{B-L}$ model at the ILC and CLIC energies
• Bounds reach of a future circular collider on the parameters of a minimal Baryon-Lepton symmetric model