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CMS-PAS-HIG-20-014
Search for the decay of a heavy Higgs boson H into two lighter Higgs bosons h and h$_{\text{S}}$ in the h$(\tau\tau)$h$_{\text{S}}(\text{bb})$ final state at 13 TeV
Abstract: A search for the decay of a heavy Higgs boson $\mathrm{H}$ into the observed Higgs boson $\mathrm{h}$ and another Higgs boson $\mathrm{h}_{\text{S}}$ with a mass of $m_{\mathrm{h}_{\rm S}} < m_{\mathrm{H}} - m_{\mathrm{h}}$ is presented. The $\mathrm{h}$ and $\mathrm{h}_{\text{S}}$ bosons are required to decay into a pair of tau leptons and a pair of b quarks, respectively. The search uses 137 fb$^{-1}$ of proton-proton collisions collected with the CMS detector at a center-of-mass energy of 13 TeV. A mass range of 240 - 3000 GeV for $m_{\mathrm{H}}$ and 60 - 2800 GeV for $m_{\mathrm{h}_{\text{S}}}$ is covered. No signal has been observed. Therefore, model independent 95% confidence level upper limits on the product of the production cross section and the branching fractions of the signal process are set ranging from 125 fb (for $m_{\mathrm{H}}=$ 240 GeV) to 2.7 fb (for $m_{\mathrm{H}}=$ 3000 GeV). These limits are compared to predictions of the next-to-minimal supersymmetric extension of the standard model.
Figures & Tables Summary References CMS Publications
Figures

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Figure 1:
Feynman diagram of the $\mathrm{g} \mathrm{g} \to \mathrm{H} \to \mathrm{h} (\tau \tau) {\mathrm{h} _{\text {S}}} (\mathrm{b} \mathrm{b})$ process.

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Figure 2:
Event categories after NN classification based on a training for $ {m_{\mathrm{H}}} = $ 500 GeV and 100 $ \leq {m_{{\mathrm{h} _{\text {S}}}}} < $ 150 GeV in the $\mathrm{e} \tau _{\text {h}} $ final state. Shown are the (upper left) $\tau \tau $, (upper right) tt, (middle left) $ {\text {jet}\to \tau _{\text {h}}}$, (middle right) misc, and (lower left) signal categories. For these figures the datasets of all years have been combined. The uncertainty bands correspond to the combination of statistical and systematic uncertainties after the fit to the signal plus background hypothesis for $ {m_{\mathrm{H}}} = $ 500 GeV and $ {m_{{\mathrm{h} _{\text {S}}}}} = $ 110 GeV.

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Figure 2-a:
Event categories after NN classification based on a training for $ {m_{\mathrm{H}}} = $ 500 GeV and 100 $ \leq {m_{{\mathrm{h} _{\text {S}}}}} < $ 150 GeV in the $\mathrm{e} \tau _{\text {h}} $ final state. Shown are the (upper left) $\tau \tau $, (upper right) tt, (middle left) $ {\text {jet}\to \tau _{\text {h}}}$, (middle right) misc, and (lower left) signal categories. For these figures the datasets of all years have been combined. The uncertainty bands correspond to the combination of statistical and systematic uncertainties after the fit to the signal plus background hypothesis for $ {m_{\mathrm{H}}} = $ 500 GeV and $ {m_{{\mathrm{h} _{\text {S}}}}} = $ 110 GeV.

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Figure 2-b:
Event categories after NN classification based on a training for $ {m_{\mathrm{H}}} = $ 500 GeV and 100 $ \leq {m_{{\mathrm{h} _{\text {S}}}}} < $ 150 GeV in the $\mathrm{e} \tau _{\text {h}} $ final state. Shown are the (upper left) $\tau \tau $, (upper right) tt, (middle left) $ {\text {jet}\to \tau _{\text {h}}}$, (middle right) misc, and (lower left) signal categories. For these figures the datasets of all years have been combined. The uncertainty bands correspond to the combination of statistical and systematic uncertainties after the fit to the signal plus background hypothesis for $ {m_{\mathrm{H}}} = $ 500 GeV and $ {m_{{\mathrm{h} _{\text {S}}}}} = $ 110 GeV.

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Figure 2-c:
Event categories after NN classification based on a training for $ {m_{\mathrm{H}}} = $ 500 GeV and 100 $ \leq {m_{{\mathrm{h} _{\text {S}}}}} < $ 150 GeV in the $\mathrm{e} \tau _{\text {h}} $ final state. Shown are the (upper left) $\tau \tau $, (upper right) tt, (middle left) $ {\text {jet}\to \tau _{\text {h}}}$, (middle right) misc, and (lower left) signal categories. For these figures the datasets of all years have been combined. The uncertainty bands correspond to the combination of statistical and systematic uncertainties after the fit to the signal plus background hypothesis for $ {m_{\mathrm{H}}} = $ 500 GeV and $ {m_{{\mathrm{h} _{\text {S}}}}} = $ 110 GeV.

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Figure 2-d:
Event categories after NN classification based on a training for $ {m_{\mathrm{H}}} = $ 500 GeV and 100 $ \leq {m_{{\mathrm{h} _{\text {S}}}}} < $ 150 GeV in the $\mathrm{e} \tau _{\text {h}} $ final state. Shown are the (upper left) $\tau \tau $, (upper right) tt, (middle left) $ {\text {jet}\to \tau _{\text {h}}}$, (middle right) misc, and (lower left) signal categories. For these figures the datasets of all years have been combined. The uncertainty bands correspond to the combination of statistical and systematic uncertainties after the fit to the signal plus background hypothesis for $ {m_{\mathrm{H}}} = $ 500 GeV and $ {m_{{\mathrm{h} _{\text {S}}}}} = $ 110 GeV.

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Figure 2-e:
Event categories after NN classification based on a training for $ {m_{\mathrm{H}}} = $ 500 GeV and 100 $ \leq {m_{{\mathrm{h} _{\text {S}}}}} < $ 150 GeV in the $\mathrm{e} \tau _{\text {h}} $ final state. Shown are the (upper left) $\tau \tau $, (upper right) tt, (middle left) $ {\text {jet}\to \tau _{\text {h}}}$, (middle right) misc, and (lower left) signal categories. For these figures the datasets of all years have been combined. The uncertainty bands correspond to the combination of statistical and systematic uncertainties after the fit to the signal plus background hypothesis for $ {m_{\mathrm{H}}} = $ 500 GeV and $ {m_{{\mathrm{h} _{\text {S}}}}} = $ 110 GeV.

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Figure 3:
Event categories after NN classification based on a training for $ {m_{\mathrm{H}}} = $ 500 GeV and 100 $ \leq {m_{{\mathrm{h} _{\text {S}}}}} < $ 150 GeV in the $\mu \tau _{\text {h}} $ final state. Shown are the (upper left) $\tau \tau $, (upper right) tt, (middle left) $ {\text {jet}\to \tau _{\text {h}}}$, (middle right) misc, and (lower left) signal categories. For these figures the datasets of all years have been combined. The uncertainty bands correspond to the combination of statistical and systematic uncertainties after the fit to the signal plus background hypothesis for $ {m_{\mathrm{H}}} = $ 500 GeV and $ {m_{{\mathrm{h} _{\text {S}}}}} = $ 110 GeV.

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Figure 3-a:
Event categories after NN classification based on a training for $ {m_{\mathrm{H}}} = $ 500 GeV and 100 $ \leq {m_{{\mathrm{h} _{\text {S}}}}} < $ 150 GeV in the $\mu \tau _{\text {h}} $ final state. Shown are the (upper left) $\tau \tau $, (upper right) tt, (middle left) $ {\text {jet}\to \tau _{\text {h}}}$, (middle right) misc, and (lower left) signal categories. For these figures the datasets of all years have been combined. The uncertainty bands correspond to the combination of statistical and systematic uncertainties after the fit to the signal plus background hypothesis for $ {m_{\mathrm{H}}} = $ 500 GeV and $ {m_{{\mathrm{h} _{\text {S}}}}} = $ 110 GeV.

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Figure 3-b:
Event categories after NN classification based on a training for $ {m_{\mathrm{H}}} = $ 500 GeV and 100 $ \leq {m_{{\mathrm{h} _{\text {S}}}}} < $ 150 GeV in the $\mu \tau _{\text {h}} $ final state. Shown are the (upper left) $\tau \tau $, (upper right) tt, (middle left) $ {\text {jet}\to \tau _{\text {h}}}$, (middle right) misc, and (lower left) signal categories. For these figures the datasets of all years have been combined. The uncertainty bands correspond to the combination of statistical and systematic uncertainties after the fit to the signal plus background hypothesis for $ {m_{\mathrm{H}}} = $ 500 GeV and $ {m_{{\mathrm{h} _{\text {S}}}}} = $ 110 GeV.

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Figure 3-c:
Event categories after NN classification based on a training for $ {m_{\mathrm{H}}} = $ 500 GeV and 100 $ \leq {m_{{\mathrm{h} _{\text {S}}}}} < $ 150 GeV in the $\mu \tau _{\text {h}} $ final state. Shown are the (upper left) $\tau \tau $, (upper right) tt, (middle left) $ {\text {jet}\to \tau _{\text {h}}}$, (middle right) misc, and (lower left) signal categories. For these figures the datasets of all years have been combined. The uncertainty bands correspond to the combination of statistical and systematic uncertainties after the fit to the signal plus background hypothesis for $ {m_{\mathrm{H}}} = $ 500 GeV and $ {m_{{\mathrm{h} _{\text {S}}}}} = $ 110 GeV.

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Figure 3-d:
Event categories after NN classification based on a training for $ {m_{\mathrm{H}}} = $ 500 GeV and 100 $ \leq {m_{{\mathrm{h} _{\text {S}}}}} < $ 150 GeV in the $\mu \tau _{\text {h}} $ final state. Shown are the (upper left) $\tau \tau $, (upper right) tt, (middle left) $ {\text {jet}\to \tau _{\text {h}}}$, (middle right) misc, and (lower left) signal categories. For these figures the datasets of all years have been combined. The uncertainty bands correspond to the combination of statistical and systematic uncertainties after the fit to the signal plus background hypothesis for $ {m_{\mathrm{H}}} = $ 500 GeV and $ {m_{{\mathrm{h} _{\text {S}}}}} = $ 110 GeV.

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Figure 3-e:
Event categories after NN classification based on a training for $ {m_{\mathrm{H}}} = $ 500 GeV and 100 $ \leq {m_{{\mathrm{h} _{\text {S}}}}} < $ 150 GeV in the $\mu \tau _{\text {h}} $ final state. Shown are the (upper left) $\tau \tau $, (upper right) tt, (middle left) $ {\text {jet}\to \tau _{\text {h}}}$, (middle right) misc, and (lower left) signal categories. For these figures the datasets of all years have been combined. The uncertainty bands correspond to the combination of statistical and systematic uncertainties after the fit to the signal plus background hypothesis for $ {m_{\mathrm{H}}} = $ 500 GeV and $ {m_{{\mathrm{h} _{\text {S}}}}} = $ 110 GeV.

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Figure 4:
Event categories after NN classification based on a training for $ {m_{\mathrm{H}}} = $ 500 GeV and 100 $ \leq {m_{{\mathrm{h} _{\text {S}}}}} < $ 150 GeV in the $\tau _{\text {h}} \tau _{\text {h}} $ final state. Shown are the (upper left) $\tau \tau $, (upper right) tt, (middle left) $ {\text {jet}\to \tau _{\text {h}}}$, (middle right) misc, and (lower left) signal categories. For these figures the datasets of all years have been combined. The uncertainty bands correspond to the combination of statistical and systematic uncertainties after the fit to the signal plus background hypothesis for $ {m_{\mathrm{H}}} = $ 500 GeV and $ {m_{{\mathrm{h} _{\text {S}}}}} = $ 110 GeV.

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Figure 4-a:
Event categories after NN classification based on a training for $ {m_{\mathrm{H}}} = $ 500 GeV and 100 $ \leq {m_{{\mathrm{h} _{\text {S}}}}} < $ 150 GeV in the $\tau _{\text {h}} \tau _{\text {h}} $ final state. Shown are the (upper left) $\tau \tau $, (upper right) tt, (middle left) $ {\text {jet}\to \tau _{\text {h}}}$, (middle right) misc, and (lower left) signal categories. For these figures the datasets of all years have been combined. The uncertainty bands correspond to the combination of statistical and systematic uncertainties after the fit to the signal plus background hypothesis for $ {m_{\mathrm{H}}} = $ 500 GeV and $ {m_{{\mathrm{h} _{\text {S}}}}} = $ 110 GeV.

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Figure 4-b:
Event categories after NN classification based on a training for $ {m_{\mathrm{H}}} = $ 500 GeV and 100 $ \leq {m_{{\mathrm{h} _{\text {S}}}}} < $ 150 GeV in the $\tau _{\text {h}} \tau _{\text {h}} $ final state. Shown are the (upper left) $\tau \tau $, (upper right) tt, (middle left) $ {\text {jet}\to \tau _{\text {h}}}$, (middle right) misc, and (lower left) signal categories. For these figures the datasets of all years have been combined. The uncertainty bands correspond to the combination of statistical and systematic uncertainties after the fit to the signal plus background hypothesis for $ {m_{\mathrm{H}}} = $ 500 GeV and $ {m_{{\mathrm{h} _{\text {S}}}}} = $ 110 GeV.

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Figure 4-c:
Event categories after NN classification based on a training for $ {m_{\mathrm{H}}} = $ 500 GeV and 100 $ \leq {m_{{\mathrm{h} _{\text {S}}}}} < $ 150 GeV in the $\tau _{\text {h}} \tau _{\text {h}} $ final state. Shown are the (upper left) $\tau \tau $, (upper right) tt, (middle left) $ {\text {jet}\to \tau _{\text {h}}}$, (middle right) misc, and (lower left) signal categories. For these figures the datasets of all years have been combined. The uncertainty bands correspond to the combination of statistical and systematic uncertainties after the fit to the signal plus background hypothesis for $ {m_{\mathrm{H}}} = $ 500 GeV and $ {m_{{\mathrm{h} _{\text {S}}}}} = $ 110 GeV.

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Figure 4-d:
Event categories after NN classification based on a training for $ {m_{\mathrm{H}}} = $ 500 GeV and 100 $ \leq {m_{{\mathrm{h} _{\text {S}}}}} < $ 150 GeV in the $\tau _{\text {h}} \tau _{\text {h}} $ final state. Shown are the (upper left) $\tau \tau $, (upper right) tt, (middle left) $ {\text {jet}\to \tau _{\text {h}}}$, (middle right) misc, and (lower left) signal categories. For these figures the datasets of all years have been combined. The uncertainty bands correspond to the combination of statistical and systematic uncertainties after the fit to the signal plus background hypothesis for $ {m_{\mathrm{H}}} = $ 500 GeV and $ {m_{{\mathrm{h} _{\text {S}}}}} = $ 110 GeV.

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Figure 4-e:
Event categories after NN classification based on a training for $ {m_{\mathrm{H}}} = $ 500 GeV and 100 $ \leq {m_{{\mathrm{h} _{\text {S}}}}} < $ 150 GeV in the $\tau _{\text {h}} \tau _{\text {h}} $ final state. Shown are the (upper left) $\tau \tau $, (upper right) tt, (middle left) $ {\text {jet}\to \tau _{\text {h}}}$, (middle right) misc, and (lower left) signal categories. For these figures the datasets of all years have been combined. The uncertainty bands correspond to the combination of statistical and systematic uncertainties after the fit to the signal plus background hypothesis for $ {m_{\mathrm{H}}} = $ 500 GeV and $ {m_{{\mathrm{h} _{\text {S}}}}} = $ 110 GeV.

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Figure 5:
Expected and observed 95% CL upper limits on $ {\sigma \times \mathcal {B}(\mathrm{H} \to \mathrm{h} (\tau \tau) {\mathrm{h} _{\text {S}}} (\mathrm{b} \mathrm{b}))}$ for all tested $ {m_{\mathrm{H}}}$ values. The limits for each corresponding mass value have been scaled by orders of ten as indicated in the annotations.

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Figure 6:
Mass range in $ {m_{\mathrm{H}}}$ and $ {m_{{\mathrm{h} _{\text {S}}}}}$ for which the maximally allowed $ {\sigma \times \mathcal {B}(\mathrm{H} \to \mathrm{h} (\tau \tau) {\mathrm{h} _{\text {S}}} (\mathrm{b} \mathrm{b}))}$ within the NMSSM can be excluded at 95% CL by this search.
Tables

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Table 1:
Offline selection requirements applied to electrons, muons, and $\tau _{\text {h}} $ candidates used for the selection of the $\tau $ pair. The $ {p_{\mathrm {T}}} $ values in braces correspond to the selection criteria for events selected by a single electron or single muon trigger. These requirements depend on the year of data taking. For $D_{\text {jet}}$ the efficiency and for $D_{\mathrm{e} (\mu)}$ the rejection rates for the chosen working points are given in braces. A detailed discussion is given in the text.

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Table 2:
Background processes contributing to the event selection, as given in Section 4. The symbol $\ell $ corresponds to an electron or muon. The second column refers to the experimental signature in the analysis, the last three columns indicate the estimation methods used to model each corresponding signature as described in Sections 5.1 - 5.3.
Summary
A search for the decay of a heavy Higgs boson $\mathrm{H}$ into the observed Higgs boson $\mathrm{h}$ and another Higgs boson $\mathrm{h}_{\text{S}}$ with a mass of ${m_{\mathrm{h}_{\text{S}}}} < {m_{\mathrm{H}}}-{m_{\mathrm{h}}}$ has been presented. The $\mathrm{h}$ and the $\mathrm{h}_{\text{S}}$ bosons are required to decay into a pair of tau leptons and a pair of $\mathrm{b}$ quarks, respectively. The search is based on 137 fb$^{-1}$ of proton-proton collisions collected with the CMS detector during the LHC Run 2 data taking period at a center-of-mass energy of 13 TeV. A mass range of 240 - 3000 GeV for ${m_{\mathrm{H}}}$ and 60 - 2800 GeV for ${m_{\mathrm{h}_{\text{S}}}}$ is covered. No signal has been observed. Therefore model independent 95% confidence level upper limits on the product of the production cross section and the branching fractions of the searched process are set ranging from 125 fb (for $m_{\mathrm{H}} = $ 240 GeV) to 2.7 fb (for ${m_{\mathrm{H}}} = $ 3000 GeV). These limits have been compared to predictions of the next-to-minimal supersymmetric extension of the standard model.
References
1 ATLAS Collaboration Observation of a new particle in the search for the standard model Higgs boson with the ATLAS detector at the LHC PLB 716 (2012) 1 1207.7214
2 CMS Collaboration Observation of a new boson at a mass of 125 GeV with the CMS experiment at the LHC PLB 716 (2012) 30 CMS-HIG-12-028
1207.7235
3 CMS Collaboration Observation of a new boson with mass near 125 GeV in $ {\mathrm{p}}{\mathrm{p}} $ collisions at $ \sqrt{s} = $ 7 and 8 TeV JHEP 06 (2013) 081 CMS-HIG-12-036
1303.4571
4 ATLAS and CMS Collaborations Measurements of the Higgs boson production and decay rates and constraints on its couplings from a combined ATLAS and CMS analysis of the LHC pp collision data at $ \sqrt{s}= $ 7 and 8 TeV JHEP 08 (2016) 045 1606.02266
5 CMS Collaboration Combined measurements of Higgs boson couplings in proton-proton collisions at $ \sqrt{s}= $ 13 TeV EPJC 79 (2019), no. 5, 421 CMS-HIG-17-031
1809.10733
6 ATLAS Collaboration Combined measurements of Higgs boson production and decay using up to 80 fb$ ^{-1} $ of proton-proton collision data at $ \sqrt{s}= $ 13 TeV collected with the ATLAS experiment PRD 101 (2020), no. 1, 012002 1909.02845
7 CMS Collaboration Measurements of the Higgs boson width and anomalous $ HVV $ couplings from on-shell and off-shell production in the four-lepton final state PRD 99 (2019), no. 11, 112003 CMS-HIG-18-002
1901.00174
8 \relax Yu. A. Golfand and E. P. Likhtman Extension of the algebra of Poincaré group generators and violation of p invariance JEPTL 13 (1971)323
9 J. Wess and B. Zumino Supergauge transformations in four-dimensions NPB 70 (1974) 39
10 P. W. Higgs Broken symmetries, massless particles and gauge fields PL12 (1964) 132
11 P. W. Higgs Broken symmetries and the masses of gauge bosons PRL 13 (1964) 508
12 G. S. Guralnik, C. R. Hagen, and T. W. B. Kibble Global conservation laws and massless particles PRL 13 (1964) 585
13 F. Englert and R. Brout Broken symmetry and the mass of gauge vector mesons PRL 13 (1964) 321
14 P. W. Higgs Spontaneous symmetry breakdown without massless bosons PR145 (1966) 1156
15 T. W. B. Kibble Symmetry breaking in non-abelian gauge theories PR155 (1967) 1554
16 P. Fayet Supergauge invariant extension of the Higgs mechanism and a model for the electron and its neutrino NPB 90 (1975) 104
17 P. Fayet Spontaneously broken supersymmetric theories of weak, electromagnetic and strong interactions PLB 69 (1977) 489
18 J. E. Kim and H. P. Nilles The mu problem and the strong CP problem PLB 138 (1984) 150
19 U. Ellwanger, C. Hugonie, and A. M. Teixeira The next-to-minimal supersymmetric standard model PR 496 (2010) 1 0910.1785
20 M. Maniatis The next-to-minimal supersymmetric extension of the standard model reviewed Int. J. Mod. Phys. A 25 (2010) 3505 0906.0777
21 ATLAS Collaboration Search for heavy Higgs bosons decaying into two tau leptons with the ATLAS detector using $ {\mathrm{p}}{\mathrm{p}} $ collisions at $ \sqrt{s}= $ 13 TeV PRL 125 (2020), no. 5, 051801 2002.12223
22 CMS Collaboration Search for additional neutral MSSM Higgs bosons in the $ \tau\tau $ final state in proton-proton collisions at $ \sqrt{s}= $ 13 TeV JHEP 09 (2018) 007 CMS-HIG-17-020
1803.06553
23 ATLAS Collaboration Search for charged Higgs bosons decaying via $ H^{\pm} \to \tau^{\pm}\nu_{\tau} $ in the $ \tau $+jets and $ \tau $+lepton final states with 36 fb$ ^{-1} $ of $ {\mathrm{p}}{\mathrm{p}} $ collision data recorded at $ \sqrt{s} = $ 13 TeV with the ATLAS experiment JHEP 09 (2018) 139 1807.07915
24 CMS Collaboration Search for charged Higgs bosons in the H$ ^{\pm} \to \tau^{\pm}\nu_\tau $ decay channel in proton-proton collisions at $ \sqrt{s} = $ 13 TeV JHEP 07 (2019) 142 CMS-HIG-18-014
1903.04560
25 S. King, M. Muehlleitner, R. Nevzorov, and K. Walz Discovery prospects for NMSSM Higgs bosons at the high-energy large hadron collider PRD 90 (2014), no. 9, 095014 1408.1120
26 CMS Collaboration Description and performance of track and primary-vertex reconstruction with the CMS tracker JINST 9 (2014), no. 10, P10009 CMS-TRK-11-001
1405.6569
27 CMS Collaboration Track impact parameter resolution for the full pseudorapidity coverage in the 2017 dataset with the CMS Phase-1 pixel detector CDS
28 CMS Collaboration Performance of electron reconstruction and selection with the CMS detector in proton-proton collisions at $ \sqrt{s} = $ 8 TeV JINST 10 (2015) P06005 CMS-EGM-13-001
1502.02701
29 CMS Collaboration Performance of CMS muon reconstruction in $ {\mathrm{p}}{\mathrm{p}} $ collision events at $ \sqrt{s} = $ 7 TeV JINST 7 (2012) P10002 CMS-MUO-10-004
1206.4071
30 CMS Collaboration Performance of photon reconstruction and identification with the CMS detector in proton-proton collisions at $\sqrt{s} =$ 8 TeV JINST 10 (2015), no. 08, P08010 CMS-EGM-14-001
1502.02702
31 CMS Collaboration Jet energy scale and resolution in the CMS experiment in $ {\mathrm{p}}{\mathrm{p}} $ collisions at 8 TeV JINST 12 (2017) P02014 CMS-JME-13-004
1607.03663
32 CMS Collaboration Performance of the CMS Level-1 trigger in proton-proton collisions at $ \sqrt{s} = $ 13 TeV JINST 15 (2020) P10017 CMS-TRG-17-001
2006.10165
33 CMS Collaboration The CMS trigger system JINST 12 (2017) P01020 CMS-TRG-12-001
1609.02366
34 CMS Collaboration The CMS experiment at the CERN LHC JINST 3 (2008) S08004 CMS-00-001
35 CMS Collaboration Particle-flow reconstruction and global event description with the CMS detector JINST 12 (2017), no. 10, P10003 CMS-PRF-14-001
1706.04965
36 M. Cacciari, G. P. Salam, and G. Soyez FastJet user manual EPJC 72 (2012) 1896 1111.6097
37 CMS Collaboration Electron and photon reconstruction and identification with the CMS experiment at the CERN LHC CMS-EGM-17-001
2012.06888
38 CMS Collaboration Performance of the CMS muon detector and muon reconstruction with proton-proton collisions at $ \sqrt{s}= $ 13 TeV JINST 13 (2018), no. 06, P06015 CMS-MUO-16-001
1804.04528
39 CMS Collaboration Identification of heavy-flavour jets with the CMS detector in pp collisions at 13 TeV JINST 13 (2018), no. 05, P05011 CMS-BTV-16-002
1712.07158
40 E. Bols et al. Jet Flavour Classification Using DeepJet Submitted to: JINST (2020) 2008.10519
41 CMS Collaboration Performance of the DeepJet b tagging algorithm using 41.9/fb of data from proton-proton collisions at 13 TeV with Phase 1 CMS detector CDS
42 CMS Collaboration Performance of reconstruction and identification of $ \tau $ leptons decaying to hadrons and $ \nu_\tau $ in pp collisions at $ \sqrt{s}= $ 13 TeV JINST 13 (2018), no. 10, P10005 CMS-TAU-16-003
1809.02816
43 CMS Collaboration Performance of the DeepTau algorithm for the discrimination of taus against jets, electron, and muons CDS
44 D. Bertolini, P. Harris, M. Low, and N. Tran Pileup per particle identification JHEP 10 (2014) 059 1407.6013
45 CMS Collaboration Performance of missing transverse momentum reconstruction in proton-proton collisions at $ \sqrt{s} = $ 13 TeV using the CMS detector JINST 14 (2019) P07004 CMS-JME-17-001
1903.06078
46 CMS Collaboration Evidence for the Higgs boson decay to a bottom quark-antiquark pair PLB 780 (2018) 501 CMS-HIG-16-044
1709.07497
47 L. Bianchini, J. Conway, E. K. Friis, and C. Veelken Reconstruction of the Higgs mass in $ \mathrm{H}\to\tau\tau $ events by dynamical likelihood techniques J. Phys. Conf. Ser. 513 (2014) 022035
48 CMS Collaboration Searches for a heavy scalar boson H decaying to a pair of 125 GeV Higgs bosons hh or for a heavy pseudoscalar boson A decaying to Zh, in the final states with $ h \to \tau \tau $ PLB 755 (2016) 217 CMS-HIG-14-034
1510.01181
49 S. Wunsch, R. Friese, R. Wolf, and G. Quast Identifying the relevant dependencies of the neural network response on characteristics of the input space Comput. Softw. Big Sci. 2 (2018), no. 1, 5 1803.08782
50 X. Glorot and Y. Bengio Understanding the difficulty of training deep feedforward neural networks in Proceedings of the thirteenth international conference on artificial intelligence and statistics, 2010
51 R. Shimizu et al. Balanced mini-batch training for imbalanced image data classification with neural network in 2018 First International Conference on Artificial Intelligence for Industries (AI4I), 2018
52 D. P. Kingma and J. Ba Adam: A method for stochastic optimization 1412.6980
53 A. N. Tikhonov Solution of incorrectly formulated problems and the regularization method Soviet Math. Dokl. 4 (1963) 1035
54 CMS Collaboration An embedding technique to determine $ \tau\tau $ backgrounds in proton-proton collision data JINST 14 (2019), no. 06, P06032 CMS-TAU-18-001
1903.01216
55 CMS Collaboration Measurement of the $ \mathrm{Z}\gamma^{*} \to \tau\tau $ cross section in pp collisions at $ \sqrt{s} = $ 13 TeV and validation of $ \tau $ lepton analysis techniques EPJC 78 (2018), no. 9, 708 CMS-HIG-15-007
1801.03535
56 J. Alwall et al. MadGraph 5: Going beyond JHEP 06 (2011) 128 1106.0522
57 J. Alwall et al. The automated computation of tree-level and next-to-leading order differential cross sections, and their matching to parton shower simulations JHEP 07 (2014) 079 1405.0301
58 P. Nason A new method for combining NLO QCD with shower Monte Carlo algorithms JHEP 11 (2004) 040 hep-ph/0409146
59 S. Frixione, P. Nason, and C. Oleari Matching NLO QCD computations with parton shower simulations: the POWHEG method JHEP 11 (2007) 070 0709.2092
60 S. Alioli, P. Nason, C. Oleari, and E. Re NLO Higgs boson production via gluon fusion matched with shower in POWHEG JHEP 04 (2009) 002 0812.0578
61 S. Alioli, P. Nason, C. Oleari, and E. Re A general framework for implementing NLO calculations in shower Monte Carlo programs: the POWHEG BOX JHEP 06 (2010) 043 1002.2581
62 S. Alioli et al. Jet pair production in POWHEG JHEP 04 (2011) 081 1012.3380
63 E. Bagnaschi, G. Degrassi, P. Slavich, and A. Vicini Higgs production via gluon fusion in the POWHEG approach in the SM and in the MSSM JHEP 02 (2012) 088 1111.2854
64 K. Melnikov and F. Petriello Electroweak gauge boson production at hadron colliders through $ \mathcal{O}(\alpha_\text{s}^{2}) $ PRD 74 (2006) 114017 hep-ph/0609070
65 M. Czakon and A. Mitov Top++: A program for the calculation of the top-pair cross-section at hadron colliders CPC 185 (2014) 2930 1112.5675
66 N. Kidonakis Top quark production in Proceedings, Helmholtz International Summer School on Physics of Heavy Quarks and Hadrons (HQ 2013): JINR, 2013 1311.0283
67 J. M. Campbell, R. K. Ellis, and C. Williams Vector boson pair production at the LHC JHEP 07 (2011) 018 1105.0020
68 T. Gehrmann et al. $ W^+W^- $ production at hadron colliders in next to next to leading order QCD PRL 113 (2014), no. 21, 212001 1408.5243
69 NNPDF Collaboration Parton distributions for the LHC run II JHEP 04 (2015) 040 1410.8849
70 NNPDF Collaboration Parton distributions from high-precision collider data EPJC 77 (2017), no. 10, 663 1706.00428
71 CMS Collaboration Event generator tunes obtained from underlying event and multiparton scattering measurements EPJC 76 (2016), no. 3, 155 CMS-GEN-14-001
1512.00815
72 CMS Collaboration Extraction and validation of a new set of CMS PYTHIA8 tunes from underlying-event measurements EPJC 80 (2020), no. 1, 4 CMS-GEN-17-001
1903.12179
73 T. Sjostrand, S. Mrenna, and P. Z. Skands A brief introduction to PYTHIA 8.1 CPC 178 (2008) 852 0710.3820
74 T. Sjostrand et al. An introduction to PYTHIA 8.2 CPC 191 (2015) 159 1410.3012
75 S. Agostinelli et al. GEANT4--a simulation toolkit NIMA 506 (2003) 250
76 CMS Collaboration Measurements of inclusive $ \mathrm{W} $ and $ \mathrm{Z} $ cross sections in $ {\mathrm{p}}{\mathrm{p}} $ collisions at $ \sqrt{s} = $ 7 TeV JHEP 01 (2011) 080 CMS-EWK-10-002
1012.2466
77 CMS Collaboration Measurement of the differential cross section for top quark pair production in pp collisions at $ \sqrt{s} = $ 8 TeV EPJC 75 (2015), no. 11, 542 CMS-TOP-12-028
1505.04480
78 S. Baker and R. D. Cousins Clarification of the use of chi square and likelihood functions in fits to histograms NIM221 (1984) 437
79 R. J. Barlow and C. Beeston Fitting using finite Monte Carlo samples CPC 77 (1993) 219
80 CMS Collaboration CMS luminosity measurements for the 2016 data taking period CMS-PAS-LUM-17-001 CMS-PAS-LUM-17-001
81 CMS Collaboration CMS luminosity measurement for the 2017 data-taking period at $ \sqrt{s} = $ 13 TeV CMS-PAS-LUM-17-004 CMS-PAS-LUM-17-004
82 CMS Collaboration CMS luminosity measurement for the 2018 data-taking period at $ \sqrt{s} = $ 13 TeV CMS-PAS-LUM-18-002 CMS-PAS-LUM-18-002
83 T. Junk Confidence level computation for combining searches with small statistics NIMA 434 (1999) 435 hep-ex/9902006
84 A. L. Read Presentation of search results: The CL$ _{\text{s}} $ technique JPG 28 (2002) 2693
85 ATLAS and CMS Collaborations Procedure for the LHC Higgs boson search combination in summer 2011 ATL-PHYS-PUB 2011-11, CMS NOTE 2011/005, CERN
86 CMS Collaboration Combined results of searches for the standard model Higgs boson in $ {\mathrm{p}}{\mathrm{p}} $ collisions at $ \sqrt{s} = $ 7 TeV PLB 710 (2012) 26 CMS-HIG-11-032
1202.1488
87 G. Cowan, K. Cranmer, E. Gross, and O. Vitells Asymptotic formulae for likelihood-based tests of new physics EPJC 71 (2011) 1554 1007.1727
88 U. Ellwanger and C. Hugonie NMHDECAY 2.0: An updated program for sparticle masses, Higgs masses, couplings and decay widths in the NMSSM CPC 175 (2006) 290 hep-ph/0508022
89 J. Baglio et al. NMSSMCALC: A program package for the calculation of loop-corrected Higgs boson masses and decay widths in the (complex) NMSSM CPC 185 (2014), no. 12 1312.4788
Compact Muon Solenoid
LHC, CERN