Non-exotic $Z'$ signals in $\ell^+\ell^-$, $b\bar b$ and $t\bar t$ final states at the LHC

K. Mimasu; L. Basso; S. Moretti

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Non-exotic $Z'$ signals in $\ell^+\ell^-$, $b\bar b$ and $t\bar t$ final states at the LHC

L. Basso, K. Mimasu, S. Moretti

High Energy Physics - Phenomenology · Submitted 31 Jul 2012

abstract compiled · 2026-09-23 · no language-model review

The authors' main claim Assuming realistic final state reconstruction efficiencies and error estimates, we find that, depending on the CERN collider energy and luminosity, the best chances of extracting the $Z'$ quantum numbers occur when two or more of these channels are simultaneously explored, as none of them separately enables one to fully probe the parameter spaces of the aforementioned models.

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arXiv ID1208.0019 (version 2)

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CitationK. Mimasu, L. Basso, S. Moretti. "Non-exotic $Z'$ signals in $\ell^+\ell^-$, $b\bar b$ and $t\bar t$ final states at the LHC." arXiv:1208.0019 (2012). https://pith.science/paper/FRUJ2LGB

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What the abstract itself states, as probabilities: claims first 0.03 · states limitation 0.74 · human participants 0.01 · controlled comparison 0.16 · randomized assignment 0.01 · states quantitative result 0.07 · compares with prior results 0.17 · mentions code or data availability 0.02.

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In the attempt to fully profile a $Z'$ boson accessible at the Large Hadron Collider (LHC), we study the sensitivity of di-lepton (for the electron, muon and tauon cases) and di-quark (for the case of the heavy flavours, $t$ and, possibly, $b$) samples to the nature of the new gauge state, for a one-dimensional class of non-exotic $Z'$ bosons. Assuming realistic final state reconstruction efficiencies and error estimates, we find that, depending on the CERN collider energy and luminosity, the best chances of extracting the $Z'$ quantum numbers occur when two or more of these channels are simultaneously explored, as none of them separately enables one to fully probe the parameter spaces of the aforementioned models. Effects of Standard Model (SM) background as well interferences between this and the various $Z'$ signals have been accounted for. A complete study of cross sections and asymmetries (both spatial and spin ones) makes clear the need for complementarity, especially for their disentanglement over the full parameter space.

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What the classifier reports for each sentence. The number is the probability it gave the label.
#	sentence	role	the authors' own work	states the main conclusion	strength
s0	In the attempt to fully profile a $Z'$ boson accessible at the Large Hadron Collider (LHC), we study the sensitivity of di-lepton (for the electron, muon and tauon cases) and di-quark (for the case of the heavy flavours, $t$ and, possibly, $b$) samples to the nature of the new gauge state, for a one-dimensional class of non-exotic $Z'$ bosons.	contribution 0.99	0.71	0.07	asserted 0.88
s1	Assuming realistic final state reconstruction efficiencies and error estimates, we find that, depending on the CERN collider energy and luminosity, the best chances of extracting the $Z'$ quantum numbers occur when two or more of these channels are simultaneously explored, as none of them separately enables one to fully probe the parameter spaces of the aforementioned models.	result 0.94	0.95	0.80	asserted 0.99
s2	Effects of Standard Model (SM) background as well interferences between this and the various $Z'$ signals have been accounted for.	method 0.97	0.81	0.03	asserted 1.00
s3	A complete study of cross sections and asymmetries (both spatial and spin ones) makes clear the need for complementarity, especially for their disentanglement over the full parameter space.	interpretation 0.61	0.89	0.31	asserted 1.00

What kind of paper the classifier reports this is: simulation study 0.79 · evidence from simulation or computation 0.97.

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arXiv listing abstract v2

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C citations
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Every quoted sentence on this record is the authors'. Every label is from Pith's closed vocabulary, with the probability shown beside it. Every number in the measurements table is the authors', checked by code. Record as JSON

The paper

Original abstract

In the attempt to fully profile a $Z'$ boson accessible at the Large Hadron Collider (LHC), we study the sensitivity of di-lepton (for the electron, muon and tauon cases) and di-quark (for the case of the heavy flavours, $t$ and, possibly, $b$) samples to the nature of the new gauge state, for a one-dimensional class of non-exotic $Z'$ bosons. Assuming realistic final state reconstruction efficiencies and error estimates, we find that, depending on the CERN collider energy and luminosity, the best chances of extracting the $Z'$ quantum numbers occur when two or more of these channels are simultaneously explored, as none of them separately enables one to fully probe the parameter spaces of the aforementioned models. Effects of Standard Model (SM) background as well interferences between this and the various $Z'$ signals have been accounted for. A complete study of cross sections and asymmetries (both spatial and spin ones) makes clear the need for complementarity, especially for their disentanglement over the full parameter space.

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References

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Cited by 2 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

Novel SM-like Higgs decay into displaced heavy neutrino pairs in U(1)' models
hep-ph 2016-12 conditional novelty 5.0 of 10

Gluon fusion into the 125 GeV Higgs followed by decay into two long-lived heavy neutrinos would yield roughly 10 to 50 displaced-lepton events per 100 fb^-1 at the LHC, with backgrounds the authors argue are negligible.
Extra Higgs Boson and $Z'$ as Portals to Signatures of Heavy Neutrinos at the LHC
hep-ph 2017-08 conditional novelty 4.0 of 10

A cut-and-count analysis of the 3-lepton + 2-jet + missing-energy final state shows that heavy neutrinos from a B-L model can be probed at the LHC, with modest significance at Run 2 luminosity and background-free sele...

How the literature uses it

11 arXiv papers cite this in 12 sentences

Each citing sentence is taken from the citing paper's LaTeX source and typed by Pith's classifier. A label appears at probability 0.8 or more (0.95 for support), a contest at 0.7 or more; the quoted words are the citing authors'. How each label was checked · JSON

Papers citing it · 5 sentences without a confident label

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Such $$ bosons generically appear in many extensions of the SM [ref] and are an essential part of Grand Unified Theories [ref] .

Interference effects in dilepton resonance searches for Z' bosons and dark matter mediators · Introduction · 0.90
While the signatures connected to the $Z'$ and an additional Higgs boson have repeatedly been studied in specialised literature [ref] , the signatures emerging from the heavy neutrino sector have seen less investigation.

Extra Higgs Boson and $Z'$ as Portals to Signatures of Heavy Neutrinos at the LHC · Introduction · 0.89
Those signatures pertaining to the $Z'$ and the (enlarged) Higgs sector have been extensively studied in literature [ref] .

Novel SM-like Higgs decay into displaced heavy neutrino pairs in U(1)' models · Introduction · 0.99

What it cites · 4 sentences without a confident label

Uses the method or tool of 2 papers

A separate program was also used for part of the analysis, based on CalcHEP [ref] , wherein the model has been independently implemented via the LanHEP module [ref] and the FeynRules [ref] package.

CalcHEP 2.3: MSSM, structure functions, event generation, batchs, and generation of matrix elements for other packages · Calculation and variables · 1.00
A separate program was also used for part of the analysis, based on CalcHEP [ref] , wherein the model has been independently implemented via the LanHEP module [ref] and the FeynRules [ref] package.

LanHEP - a package for automatic generation of Feynman rules in gauge models · Calculation and variables · 1.00

Uses data or values from 1 paper

Currently, assuming a sequential $Z'$, it should be noted that the Tevatron places limits on $M_Z'$, at around 1 TeV [ref] while the LHC sets about 2.3 TeV [ref] .

Search for high-mass resonances decaying to dilepton final states in pp collisions at a center-of-mass energy of 7 TeV with the ATLAS detector · Introduction · 0.91

Compares with 1 paper

Notice that ATLAS has also published an analysis for $∼5$ fb$^-1$ [ref] , but their limits are less tight than the CMS ones.

Search for high-mass resonances decaying to dilepton final states in pp collisions at a center-of-mass energy of 7 TeV with the ATLAS detector · Results · 0.96

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