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Application of the matrix element method to Higgs boson pair production in the channel $\textrm{HH} \to \textrm{b}\bar{\textrm{b}}\textrm{W}\textrm{W}^{*}$ at the LHC
High Energy Physics - Phenomenology · Submitted 11 Aug 2021
abstract compiled · 2026-09-23 · no language-model review
The authors' main claim We find that the $\textrm{t}\bar{\textrm{t}}$ background can be reduced to a level of $0.26\%$ for a signal efficiency of $35\%$.
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The paper's own sentences, arranged. Each label is drawn from a closed vocabulary; the number beside it is the probability the classifier gave that label. Numbers in the tables are the authors', checked by code. No sentence in this record was written by a model.
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The abstract, sentence by sentence
We apply the matrix element method (MEM) to the search for non-resonant Higgs boson pair ($\textrm{HH}$) production in the channel $\textrm{HH} \to \textrm{b}\bar{\textrm{b}}\textrm{W}\textrm{W}^{*}$ at the LHC and study the separation between the $\textrm{HH}$ signal and the large irreducible background, which arises from the production of top quark pairs ($\textrm{t}\bar{\textrm{t}}$). Our study focuses on events containing two leptons (electrons or muons) in the final state. The separation between signal and background is studied for experimental conditions characteristic for the ATLAS and CMS experiments during LHC Run $2$, using the DELPHES fast-simulation package. We find that the $\textrm{t}\bar{\textrm{t}}$ background can be reduced to a level of $0.26\%$ for a signal efficiency of $35\%$.
background contribution method result interpretation main claim
| # | sentence | role | the authors' own work | states the main conclusion | strength |
|---|---|---|---|---|---|
| s0 | We apply the matrix element method (MEM) to the search for non-resonant Higgs boson pair ($\textrm{HH}$) production in the channel $\textrm{HH} \to \textrm{b}\bar{\textrm{b}}\textrm{W}\textrm{W}^{*}$ at the LHC and study the separation between the $\textrm{HH}$ signal and the large irreducible background, which arises from the production of top quark pairs ($\textrm{t}\bar{\textrm{t}}$). | contribution 0.99 | 0.93 | 0.11 | asserted 0.96 |
| s1 | Our study focuses on events containing two leptons (electrons or muons) in the final state. | method 0.57 | 0.49 | 0.02 | asserted 0.98 |
| s2 | The separation between signal and background is studied for experimental conditions characteristic for the ATLAS and CMS experiments during LHC Run $2$, using the DELPHES fast-simulation package. | method 1.00 | 0.63 | 0.03 | asserted 0.94 |
| s3 | We find that the $\textrm{t}\bar{\textrm{t}}$ background can be reduced to a level of $0.26\%$ for a signal efficiency of $35\%$. | result 1.00 | 0.96 | 0.74 | asserted 1.00 |
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The paper
Original abstract
We apply the matrix element method (MEM) to the search for non-resonant Higgs boson pair ($\textrm{HH}$) production in the channel $\textrm{HH} \to \textrm{b}\bar{\textrm{b}}\textrm{W}\textrm{W}^{*}$ at the LHC and study the separation between the $\textrm{HH}$ signal and the large irreducible background, which arises from the production of top quark pairs ($\textrm{t}\bar{\textrm{t}}$). Our study focuses on events containing two leptons (electrons or muons) in the final state. The separation between signal and background is studied for experimental conditions characteristic for the ATLAS and CMS experiments during LHC Run $2$, using the DELPHES fast-simulation package. We find that the $\textrm{t}\bar{\textrm{t}}$ background can be reduced to a level of $0.26\%$ for a signal efficiency of $35\%$.
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What this paper does with the arXiv papers it cites
What it cites · 37 sentences without a confident label
Uses the method or tool of 23 papers
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We use ME generated at LO accuracy with the program $MadGraph_aMCatNLO$ $2.3.3$ [ref] for the signal as well as for the background hypothesis.
The automated computation of tree-level and next-to-leading order differential cross sections, and their matching to parton shower simulations · The Matrix element method · 1.00
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The latter are simulated using the $DELPHES$ fast-simulation framework [ref] .
DELPHES 3, A modular framework for fast simulation of a generic collider experiment · Introduction · 1.00
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The $$-tagging criteria implemented in the $DELPHES$ card for the CMS detector corresponds to the medium working-point of the “combined secondary vertex” $$-tagging algorithm published in Ref. [ref] .
Identification of b-quark jets with the CMS experiment · Performance · 0.96
Uses data or values from 9 papers
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The algorithm identifies jets originating from the hadronization of a bottom quark with an efficiency of approximately $70%$, for a misidentification rate for light-quark and gluon jets of about $1.5%$ [ref] .
Identification of b-quark jets with the CMS experiment · Performance · 0.80
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Including corrections for finite top quark mass effects, computed at next-to-leading order (NLO), the SM cross section for the $$ process amounts to $31.05^+1.40_-1.98$ at $√(s) = 13$ center-of-mass energy [ref] .
Higgs boson pair production at NNLO with top quark mass effects · Introduction · 1.00
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For a top quark mass of $m_ = 172.8$ [ref] , the cross section for $$ production amounts to $825.9^+46.1_-50.5$ at $√(s) = 13$ center-of-mass energy [ref] .
Top++: a program for the calculation of the top-pair cross-section at hadron colliders · Introduction · 0.98
Cites as background 33 papers
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The ATLAS and CMS collaborations have searched for non-resonant $$ production in the decay channels $→$, $$, $$, $$ using the data recorded during LHC Runs $1$ and $2$ [ref] .
Search for Higgs boson pair production in the $b\bar{b}WW^{*}$ decay mode at $\sqrt{s}=13$ TeV with the ATLAS detector · Introduction · 0.91
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The ATLAS and CMS collaborations have searched for non-resonant $$ production in the decay channels $→$, $$, $$, $$ using the data recorded during LHC Runs $1$ and $2$ [ref] .
Combination of searches for Higgs boson pair production in proton-proton collisions at $\sqrt{s} =$ 13 TeV · Introduction · 0.91
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The ATLAS and CMS collaborations have searched for non-resonant $$ production in the decay channels $→$, $$, $$, $$ using the data recorded during LHC Runs $1$ and $2$ [ref] .
Search for nonresonant Higgs boson pair production in final states with two bottom quarks and two photons in proton-proton collisions at $\sqrt{s} =$ 13 TeV · Introduction · 0.91
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