Scrutinizing the Higgs Signal and Background in the $2e2\mu$ Golden Channel

Abstract

Kinematic distributions in the decays of the newly discovered resonance to four leptons are a powerful test of the tensor structure of its couplings to electroweak gauge bosons. We present an analytic calculation for both signal and background of the fully differential cross section for the `Golden Channel' $e^{+}{e}^{-}{\mu }^{+}{\mu }^{-}$ final state. We include all interference effects between intermediate gauge bosons and allow them to be on- or off-shell. For the signal we compute the fully differential cross section for general scalar couplings to $ZZ$, $\gamma \gamma$, and $Z\gamma$. For the background we compute the leading order fully differential cross section for the dominant contribution coming from $q\bar{q}$ annihilation into $Z$ and $\gamma$ gauge bosons, including the contribution from the resonant $Z\to 2e2\mu$ process. We also present singly and doubly differential projections and study the interference effects on the differential spectra. These expressions can be used in a variety of ways to uncover the nature of the newly discovered resonance or any new scalars decaying to neutral gauge bosons which might be discovered in the future.

References added

References in corpus (15)

• 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
• Matching NLO QCD computations with Parton Shower simulations: the POWHEG method
• FeynRules - Feynman rules made easy
• CalcHEP 3.4 for collider physics within and beyond the Standard Model
• On the spin and parity of a single-produced resonance at the LHC
• Inadequacy of zero-width approximation for a light Higgs boson signal
• Have We Observed the Higgs (Imposter)?
• Directly Measuring the Tensor Structure of the Scalar Coupling to Gauge Bosons
• The Matrix Element Method and its Application to Measurements of the Top Quark Mass
• Observation of Z decays to four leptons with the CMS detector at the LHC
• Can the 126 GeV boson be a pseudoscalar?
• Single-variable asymmetries for measuring the `Higgs' boson spin and CP properties
• Extending the Matrix Element Method to Next-to-Leading Order
• Matrix Element Method in HEP: Transfer Functions, Efficiencies, and Likelihood Normalization

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