LHC Constraints on a $(B-L{)}_3$ Gauge Boson

Abstract

In this paper, we explore the constraints that the LHC can place on a massive gauge boson $X$ that predominantly couples to the third generation of fermions. Such a gauge boson arises in scenarios where the $B-L$ of the third generation is gauged. We focus on the mass range $10\le m_X\lesssim 2m_W$, where current constraints are lacking, and develop a dedicated search strategy. For this mass range, we show that $b\bar{b}{\tau }^{+}{\tau }^{-}$, where at least one of the $\tau$s decay leptonically is the optimal channel to look for the $X$ at the LHC. The QCD production of $b$ quarks, combined with the cleanliness of the leptons coming from the decay of the $\tau$ allow us to detect $X$ gauge boson with couplings of $g_X\sim (0.005-0.01)$, for $m_X<50\text{GeV}$, and a coupling of $O(0.1)$ for heavier $X$ gauge boson with $100{\text{fb}}^{-1}$ of integrated luminosity. This is about a factor of 2-10 improvement over previous constraints coming from the decay of ${\rm Y}\to {\tau }^{+}{\tau }^{-}$. Extrapolating to the full HL-LHC luminosity of $3000{\text{fb}}^{-1}$, the bounds on $g_X$ can be enhanced by another factor of $\sqrt{2}$ for $m_X<50\text{GeV}$.

arXiv comment28 pages, 12 figures

References in corpus (69)

• The automated computation of tree-level and next-to-leading order differential cross sections, and their matching to parton shower simulations
• An Introduction to PYTHIA 8.2
• DELPHES 3, A modular framework for fast simulation of a generic collider experiment
• FeynRules 2.0 - A complete toolbox for tree-level phenomenology
• MadGraph 5 : Going Beyond
• UFO - The Universal FeynRules Output
• Comparative study of various algorithms for the merging of parton showers and matrix elements in hadronic collisions
• Topcolor Assisted Technicolor
• Muon reconstruction performance of the ATLAS detector in proton--proton collision data at $\sqrt{s}$=13 TeV
• Performance of electron reconstruction and selection with the CMS detector in proton-proton collisions at sqrt(s) = 8 TeV
• Performance of the CMS muon detector and muon reconstruction with proton-proton collisions at $\sqrt{s}=$ 13 TeV
• Z-prime Gauge Bosons at the Tevatron
• Explaining $h\to {\mu }^{\pm }{\tau }^{\mp }$, $B\to K^{\ast }{\mu }^{+}{\mu }^{-}$ and $B\to K{\mu }^{+}{\mu }^{-}/B\to K{e}^{+}{e}^{-}$ in a two-Higgs-doublet model with gauged $L_{\mu }-L_{\tau }$
• Dressing L_mu - L_tau in Color
• Addressing the LHC flavour anomalies with horizontal gauge symmetries
• Search for new high-mass phenomena in the dilepton final state using 36 fb${}^{-1}$ of proton-proton collision data at $\sqrt{s}$ = 13 TeV with the ATLAS detector
• Electron efficiency measurements with the ATLAS detector using 2012 LHC proton-proton collision data
• Exploring nu signals in dark matter detectors
• Top Production: Sensitivity to New Physics
• New measurement of the K+ => pi+,nu,nubar branching ratio
• Muon Anomalous $g-2$ and Gauged $L_{\mu }-L_{\tau }$ Models
• Gauged L_mu - L_tau Symmetry at the Electroweak Scale
• Gauged $L_{\mu }-L_{\tau }$ with Large Muon Anomalous Magnetic Moment and the Bimaximal Mixing of Neutrinos
• Neutralino Dark Matter at 14 and 100 TeV
• Model for a Light Z' Boson
• Improved Measurement of the K+ to pi+ nu nubar Branching Ratio
• A model for large non-standard interactions of neutrinos leading to the LMA-Dark solution
• Combination of searches for Higgs boson pair production in proton-proton collisions at $\sqrt{s}=$ 13 TeV
• Flavoured $B-L$ Local Symmetry and Anomalous Rare $B$ Decays
• Lepton Flavor Violating Non-Standard Interactions via Light Mediators
• Search for resonant t t-bar production in proton-proton collisions at sqrt(s) = 8 TeV
• Flavor Gauge Models Below the Fermi Scale
• Search for heavy particles decaying into top-quark pairs using lepton-plus-jets events in proton-proton collisions at $\sqrt{s}=13$ TeV with the ATLAS detector
• Measurement of the t-tbar production cross section in the e-mu channel in proton-proton collisions at sqrt(s) = 7 and 8 TeV
• A $L_{\mu }-L_{\tau }$ theory of Higgs flavor violation and $(g-2{)}_{\mu }$
• Anomaly-free local horizontal symmetry and anomaly-full rare B-decays
• Search for pair production of third-generation scalar leptoquarks and top squarks in proton-proton collisions at sqrt(s) = 8 TeV
• Relating D0-anti-D0 Mixing and D0 -> l+l- with New Physics
• Muon g-2 and LHC phenomenology in the $L_{\mu }-L_{\tau }$ gauge symmetric model
• Natural fermion mass hierarchy and new signals for the Higgs boson
• Top production at the Tevatron/LHC and nonstandard, strongly interacting spin one particles
• Search for $WW/WZ$ resonance production in $\ell \nu qq$ final states in $pp$ collisions at $\sqrt{s}=$ 13 TeV with the ATLAS detector
• Non-universal minimal Z' models: present bounds and early LHC reach
• A comprehensive approach to dark matter studies: exploration of simplified top-philic models
• Short Baseline Neutrino Oscillations and a New Light Gauge Boson
• Finding Z' bosons coupled preferentially to the third family at CERN LEP and the Fermilab Tevatron
• Search for new physics in final states with two opposite-sign, same-flavor leptons, jets, and missing transverse momentum in pp collisions at sqrt(s) = 13 TeV
• Search for massive resonances decaying into WW, WZ, ZZ, qW, and qZ with dijet final states at $\sqrt{s}=$ 13 TeV
• Search for the Dimuon Decay of the Higgs Boson in $pp$ Collisions at $\sqrt{s}$ = 13 TeV with the ATLAS Detector
• Measurement of the t t-bar production cross section using events in the e mu final state in pp collisions at sqrt(s) = 13 TeV
• Search for t t-bar resonances in highly boosted lepton+jets and fully hadronic final states in proton-proton collisions at sqrt(s) = 13 TeV
• Prominent Decay Modes of a Leptophobic Z'
• Cross Sections for Leptophobic Topcolor Z' decaying to top-antitop
• Precision Measurement of the Mass of the $\tau$ Lepton
• Flavor Violation in Supersymmetric Q_6 Model
• Combination of searches for heavy resonances decaying to WW, WZ, ZZ, WH, and ZH boson pairs in proton-proton collisions at sqrt(s) = 8 and 13 TeV
• A search for Higgs boson pair production in the bb tau tau final state in proton-proton collisions at sqrt(s) = 8 TeV
• Measurement of the jet mass in highly boosted t t-bar events from pp collisions at sqrt(s) = 8 TeV
• Top-philic $Z^{\prime }$ Forces at the LHC
• Test of lepton universality in Upsilon(1S) decays at BaBar
• Searching for Flavored Gauge Bosons
• Constraints on $L_{\mu }-L_{\tau }$ interactions at the LHC and beyond
• Flavor-Nonuniversal Dark Gauge Bosons and the Muon g-2
• LHC Search for Right-handed Neutrinos in $Z^{\prime }$ Models
• Right-handed Neutrino Dark Matter in a U(1) Extension of the Standard Model
• Using the (Modified) Matrix Element Method to constrain $L_{\mu }-L_{\tau }$ Interactions
• Natural Alignment of Quark Flavors and Radiatively Induced Quark Mixings
• Measurement of the $t\bar{t}$ production cross-section using $e\mu$ events with b-tagged jets in pp collisions at $\sqrt{s}$=13 TeV with the ATLAS detector
• Mu_x boosted-bottom-jet tagging and Z-prime boson searches

Cited by in corpus (8)

• $Z^{\prime }$ models with less-minimal flavour violation
• Inelastic extra $U(1)$ charged scalar dark matter
• Neutrino Non-Standard Interactions: Complementarity Between LHC and Oscillation Experiments
• Probing New Physics at Future Tau Neutrino Telescopes
• $(g-2{)}_{\mu }$ Versus Flavor Changing Neutral Current Induced by the Light $(B-L{)}_{\mu \tau }$ Boson
• A heavy neutral gauge boson near the Z boson mass pole via third generation fermions at the LHC
• Discovery potential of a long-lived partner of inelastic dark matter at MATHUSLA in $U(1{)}_{X_3}$ extension of the standard model
• Intergenerational gauged $B-L$ model and its implication to muon $g-2$ anomaly and thermal dark matter