cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.17182/hepdata.128973.v1/t7
title: "Supplemental Figure 5a" of "Search for nonresonant pair production of highly energetic Higgs bosons decaying to bottom quarks"

description: The data in the ggF BDT event category 1 after subtracting all background processes except the QCD multijet one compared to the QCD multijet background prediction derived from the dedicated control region.
description: A search for nonresonant Higgs boson ($H$) pair production via gluon and vector boson ($V$) fusion is performed in the four-bottom-quark final state, using proton-proton collision data at 13 TeV corresponding to 138 fb$^{-1}$ collected by the CMS experiment at the LHC. The analysis targets Lorentz-boosted $H$ pairs identified using a graph neural network. It constrains the strengths relative to the standard model of the $H$ self-coupling and the quartic $VVHH$ couplings, $\kappa_{2V}$, excluding $\kappa_{2V} = 0$ for the first time, with a significance of 6.3 standard deviations when other $H$ couplings are fixed to their standard model values.
DOI: 10.25549/vercoutere-ouc110611234
title: Treble clef with notes

description: A simplified treble clef on a staff of five lines with quarter notes and filled in whole notes colored brown, green, blue, black, orange, and yellow. A dark brown piano is perpendicular to the staff. Painting also includes four keys on a gold horn instrument and half of a tamborine in pink and white. The background is black and white, magenta, brown, orange, green, blue, black, and white with splotches. See description of 001 for OT notes.
DOI: 10.17182/hepdata.128973.v1/t11
title: "Supplemental Figure 6b" of "Search for nonresonant pair production of highly energetic Higgs bosons decaying to bottom quarks"

description: The data and expected background distributions in the $t\overline{t}$ control region of the $D_{b\overline{b}}$-leading jet $D_{b\overline{b}}$.
description: A search for nonresonant Higgs boson ($H$) pair production via gluon and vector boson ($V$) fusion is performed in the four-bottom-quark final state, using proton-proton collision data at 13 TeV corresponding to 138 fb$^{-1}$ collected by the CMS experiment at the LHC. The analysis targets Lorentz-boosted $H$ pairs identified using a graph neural network. It constrains the strengths relative to the standard model of the $H$ self-coupling and the quartic $VVHH$ couplings, $\kappa_{2V}$, excluding $\kappa_{2V} = 0$ for the first time, with a significance of 6.3 standard deviations when other $H$ couplings are fixed to their standard model values.
DOI: 10.17182/hepdata.128973.v1/t12
title: "Supplemental Figure 6c" of "Search for nonresonant pair production of highly energetic Higgs bosons decaying to bottom quarks"

description: The data and expected background distributions in the $t\overline{t}$ control region of $m_{HH}$.
description: A search for nonresonant Higgs boson ($H$) pair production via gluon and vector boson ($V$) fusion is performed in the four-bottom-quark final state, using proton-proton collision data at 13 TeV corresponding to 138 fb$^{-1}$ collected by the CMS experiment at the LHC. The analysis targets Lorentz-boosted $H$ pairs identified using a graph neural network. It constrains the strengths relative to the standard model of the $H$ self-coupling and the quartic $VVHH$ couplings, $\kappa_{2V}$, excluding $\kappa_{2V} = 0$ for the first time, with a significance of 6.3 standard deviations when other $H$ couplings are fixed to their standard model values.
DOI: 10.17182/hepdata.128973.v1/t5
title: "Supplemental Figure 4b" of "Search for nonresonant pair production of highly energetic Higgs bosons decaying to bottom quarks"

description: The data and fitted signal and background distributions for the $D_{b\overline{b}}$-subleading jet regressed mass for the ggF BDT event category 3. The SM $HH$ ($\kappa_{2V}=\kappa_{V}=\kappa_{\lambda}=1$) signal is scaled to the best fit signal strength $\mu = 3.5$.
description: A search for nonresonant Higgs boson ($H$) pair production via gluon and vector boson ($V$) fusion is performed in the four-bottom-quark final state, using proton-proton collision data at 13 TeV corresponding to 138 fb$^{-1}$ collected by the CMS experiment at the LHC. The analysis targets Lorentz-boosted $H$ pairs identified using a graph neural network. It constrains the strengths relative to the standard model of the $H$ self-coupling and the quartic $VVHH$ couplings, $\kappa_{2V}$, excluding $\kappa_{2V} = 0$ for the first time, with a significance of 6.3 standard deviations when other $H$ couplings are fixed to their standard model values.
DOI: 10.17182/hepdata.128973.v1/t6
title: "Supplemental Figure 4c" of "Search for nonresonant pair production of highly energetic Higgs bosons decaying to bottom quarks"

description: The data and fitted signal and background distributions for the $D_{b\overline{b}}$-subleading jet regressed mass for the ggF QCD multijet background control region. The SM $HH$ ($\kappa_{2V}=\kappa_{V}=\kappa_{\lambda}=1$) signal is scaled to the best fit signal strength $\mu = 3.5$.
description: A search for nonresonant Higgs boson ($H$) pair production via gluon and vector boson ($V$) fusion is performed in the four-bottom-quark final state, using proton-proton collision data at 13 TeV corresponding to 138 fb$^{-1}$ collected by the CMS experiment at the LHC. The analysis targets Lorentz-boosted $H$ pairs identified using a graph neural network. It constrains the strengths relative to the standard model of the $H$ self-coupling and the quartic $VVHH$ couplings, $\kappa_{2V}$, excluding $\kappa_{2V} = 0$ for the first time, with a significance of 6.3 standard deviations when other $H$ couplings are fixed to their standard model values.
DOI: 10.17182/hepdata.128973.v1/t8
title: "Supplemental Figure 5b" of "Search for nonresonant pair production of highly energetic Higgs bosons decaying to bottom quarks"

description: The data in the ggF BDT event category 2 after subtracting all background processes except the QCD multijet one compared to the QCD multijet background prediction derived from the dedicated control region.
description: A search for nonresonant Higgs boson ($H$) pair production via gluon and vector boson ($V$) fusion is performed in the four-bottom-quark final state, using proton-proton collision data at 13 TeV corresponding to 138 fb$^{-1}$ collected by the CMS experiment at the LHC. The analysis targets Lorentz-boosted $H$ pairs identified using a graph neural network. It constrains the strengths relative to the standard model of the $H$ self-coupling and the quartic $VVHH$ couplings, $\kappa_{2V}$, excluding $\kappa_{2V} = 0$ for the first time, with a significance of 6.3 standard deviations when other $H$ couplings are fixed to their standard model values.
DOI: 10.17182/hepdata.128973.v1/t9
title: "Supplemental Figure 5c" of "Search for nonresonant pair production of highly energetic Higgs bosons decaying to bottom quarks"

description: The data in the ggF BDT event category 3 after subtracting all background processes except the QCD multijet one compared to the QCD multijet background prediction derived from the dedicated control region.
description: A search for nonresonant Higgs boson ($H$) pair production via gluon and vector boson ($V$) fusion is performed in the four-bottom-quark final state, using proton-proton collision data at 13 TeV corresponding to 138 fb$^{-1}$ collected by the CMS experiment at the LHC. The analysis targets Lorentz-boosted $H$ pairs identified using a graph neural network. It constrains the strengths relative to the standard model of the $H$ self-coupling and the quartic $VVHH$ couplings, $\kappa_{2V}$, excluding $\kappa_{2V} = 0$ for the first time, with a significance of 6.3 standard deviations when other $H$ couplings are fixed to their standard model values.
DOI: 10.17182/hepdata.128973.v1/t10
title: "Supplemental Figure 6a" of "Search for nonresonant pair production of highly energetic Higgs bosons decaying to bottom quarks"

description: The data and expected background distributions in the $t\overline{t}$ control region of the $D_{b\overline{b}}$-leading jet $m_{ ext{SD}}$.
description: A search for nonresonant Higgs boson ($H$) pair production via gluon and vector boson ($V$) fusion is performed in the four-bottom-quark final state, using proton-proton collision data at 13 TeV corresponding to 138 fb$^{-1}$ collected by the CMS experiment at the LHC. The analysis targets Lorentz-boosted $H$ pairs identified using a graph neural network. It constrains the strengths relative to the standard model of the $H$ self-coupling and the quartic $VVHH$ couplings, $\kappa_{2V}$, excluding $\kappa_{2V} = 0$ for the first time, with a significance of 6.3 standard deviations when other $H$ couplings are fixed to their standard model values.
DOI: 10.17182/hepdata.128973.v1/t13
title: "Supplemental Figure 6d" of "Search for nonresonant pair production of highly energetic Higgs bosons decaying to bottom quarks"

description: The data and expected background distributions in the $t\overline{t}$ control region of $p_{\text{T} j_{1}}/m_{HH}$.
description: A search for nonresonant Higgs boson ($H$) pair production via gluon and vector boson ($V$) fusion is performed in the four-bottom-quark final state, using proton-proton collision data at 13 TeV corresponding to 138 fb$^{-1}$ collected by the CMS experiment at the LHC. The analysis targets Lorentz-boosted $H$ pairs identified using a graph neural network. It constrains the strengths relative to the standard model of the $H$ self-coupling and the quartic $VVHH$ couplings, $\kappa_{2V}$, excluding $\kappa_{2V} = 0$ for the first time, with a significance of 6.3 standard deviations when other $H$ couplings are fixed to their standard model values.
DOI: 10.17182/hepdata.128973.v1/t14
title: "Supplemental Figure 7" of "Search for nonresonant pair production of highly energetic Higgs bosons decaying to bottom quarks"

description: Expected and observed 95% CL upper limits on $HH$ production with respect to the SM expectation ($\kappa_{\lambda}=\kappa_{t}=\kappa_{V}=\kappa_{2V}=1$) in the individual ggF and VBF search categories and their combination.
description: A search for nonresonant Higgs boson ($H$) pair production via gluon and vector boson ($V$) fusion is performed in the four-bottom-quark final state, using proton-proton collision data at 13 TeV corresponding to 138 fb$^{-1}$ collected by the CMS experiment at the LHC. The analysis targets Lorentz-boosted $H$ pairs identified using a graph neural network. It constrains the strengths relative to the standard model of the $H$ self-coupling and the quartic $VVHH$ couplings, $\kappa_{2V}$, excluding $\kappa_{2V} = 0$ for the first time, with a significance of 6.3 standard deviations when other $H$ couplings are fixed to their standard model values.
DOI: 10.17182/hepdata.128973.v1/t15
title: "Supplemental Figure 8" of "Search for nonresonant pair production of highly energetic Higgs bosons decaying to bottom quarks"

description: Expected and observed 95% CL upper limits on $HH$ production with respect to the expectation for $\kappa_{\lambda}=\kappa_{t}=\kappa_{V}=1$, $\kappa_{2V}=0$ in the individual ggF and VBF search categories and their combination.
description: A search for nonresonant Higgs boson ($H$) pair production via gluon and vector boson ($V$) fusion is performed in the four-bottom-quark final state, using proton-proton collision data at 13 TeV corresponding to 138 fb$^{-1}$ collected by the CMS experiment at the LHC. The analysis targets Lorentz-boosted $H$ pairs identified using a graph neural network. It constrains the strengths relative to the standard model of the $H$ self-coupling and the quartic $VVHH$ couplings, $\kappa_{2V}$, excluding $\kappa_{2V} = 0$ for the first time, with a significance of 6.3 standard deviations when other $H$ couplings are fixed to their standard model values.
DOI: 10.17182/hepdata.128973.v1/t16
title: "Supplemental Figure 9a" of "Search for nonresonant pair production of highly energetic Higgs bosons decaying to bottom quarks"

description: Observed and expected 95% CL exclusion limit on the product of the inclusive $HH$ production cross section and the branching fraction into $b\overline{b}b\overline{b}$ as a function of $\kappa_{\lambda}$ with other couplings fixed to the SM values.
description: A search for nonresonant Higgs boson ($H$) pair production via gluon and vector boson ($V$) fusion is performed in the four-bottom-quark final state, using proton-proton collision data at 13 TeV corresponding to 138 fb$^{-1}$ collected by the CMS experiment at the LHC. The analysis targets Lorentz-boosted $H$ pairs identified using a graph neural network. It constrains the strengths relative to the standard model of the $H$ self-coupling and the quartic $VVHH$ couplings, $\kappa_{2V}$, excluding $\kappa_{2V} = 0$ for the first time, with a significance of 6.3 standard deviations when other $H$ couplings are fixed to their standard model values.
DOI: 10.17182/hepdata.128973.v1/t17
title: "Supplemental Figure 9b" of "Search for nonresonant pair production of highly energetic Higgs bosons decaying to bottom quarks"

description: Observed and expected 95% CL exclusion limit on the product of the inclusive $HH$ production cross section and the branching fraction into $b\overline{b}b\overline{b}$ as a function of $\kappa_{2V}$ with other couplings fixed to the SM values.
description: A search for nonresonant Higgs boson ($H$) pair production via gluon and vector boson ($V$) fusion is performed in the four-bottom-quark final state, using proton-proton collision data at 13 TeV corresponding to 138 fb$^{-1}$ collected by the CMS experiment at the LHC. The analysis targets Lorentz-boosted $H$ pairs identified using a graph neural network. It constrains the strengths relative to the standard model of the $H$ self-coupling and the quartic $VVHH$ couplings, $\kappa_{2V}$, excluding $\kappa_{2V} = 0$ for the first time, with a significance of 6.3 standard deviations when other $H$ couplings are fixed to their standard model values.
DOI: 10.17182/hepdata.128973.v1/t18
title: "Supplemental Figure 9c" of "Search for nonresonant pair production of highly energetic Higgs bosons decaying to bottom quarks"

description: Observed and expected 95% CL exclusion limit on the product of the inclusive $HH$ production cross section and the branching fraction into $b\overline{b}b\overline{b}$ as a function of $\kappa_{V}$ with other couplings fixed to the SM values.
description: A search for nonresonant Higgs boson ($H$) pair production via gluon and vector boson ($V$) fusion is performed in the four-bottom-quark final state, using proton-proton collision data at 13 TeV corresponding to 138 fb$^{-1}$ collected by the CMS experiment at the LHC. The analysis targets Lorentz-boosted $H$ pairs identified using a graph neural network. It constrains the strengths relative to the standard model of the $H$ self-coupling and the quartic $VVHH$ couplings, $\kappa_{2V}$, excluding $\kappa_{2V} = 0$ for the first time, with a significance of 6.3 standard deviations when other $H$ couplings are fixed to their standard model values.
DOI: 10.17182/hepdata.128973.v1/t19
title: "Supplemental Figure 10a" of "Search for nonresonant pair production of highly energetic Higgs bosons decaying to bottom quarks"

description: Observed and expected 95% CL exclusion limit on the product of the VBF $HH$ production cross section and the branching fraction into $b\overline{b}b\overline{b}$ as a function of $\kappa_{2V}$ with other couplings fixed to the SM values.
description: A search for nonresonant Higgs boson ($H$) pair production via gluon and vector boson ($V$) fusion is performed in the four-bottom-quark final state, using proton-proton collision data at 13 TeV corresponding to 138 fb$^{-1}$ collected by the CMS experiment at the LHC. The analysis targets Lorentz-boosted $H$ pairs identified using a graph neural network. It constrains the strengths relative to the standard model of the $H$ self-coupling and the quartic $VVHH$ couplings, $\kappa_{2V}$, excluding $\kappa_{2V} = 0$ for the first time, with a significance of 6.3 standard deviations when other $H$ couplings are fixed to their standard model values.
DOI: 10.17182/hepdata.128973.v1/t20
title: "Supplemental Figure 10b" of "Search for nonresonant pair production of highly energetic Higgs bosons decaying to bottom quarks"

description: Observed and expected 95% CL exclusion limit on the product of the VBF $HH$ production cross section and the branching fraction into $b\overline{b}b\overline{b}$ as a function of $\kappa_{V}$ with other couplings fixed to the SM values.
description: A search for nonresonant Higgs boson ($H$) pair production via gluon and vector boson ($V$) fusion is performed in the four-bottom-quark final state, using proton-proton collision data at 13 TeV corresponding to 138 fb$^{-1}$ collected by the CMS experiment at the LHC. The analysis targets Lorentz-boosted $H$ pairs identified using a graph neural network. It constrains the strengths relative to the standard model of the $H$ self-coupling and the quartic $VVHH$ couplings, $\kappa_{2V}$, excluding $\kappa_{2V} = 0$ for the first time, with a significance of 6.3 standard deviations when other $H$ couplings are fixed to their standard model values.
DOI: 10.17182/hepdata.128973.v1/t21
title: "Supplemental Figure 11" of "Search for nonresonant pair production of highly energetic Higgs bosons decaying to bottom quarks"

description: Two-parameter profile likelihood test statistic ($-2\Delta\ln\mathcal{L}$) scan in data as a function of $\kappa_{2V}$ and $\kappa_{V}$.
description: A search for nonresonant Higgs boson ($H$) pair production via gluon and vector boson ($V$) fusion is performed in the four-bottom-quark final state, using proton-proton collision data at 13 TeV corresponding to 138 fb$^{-1}$ collected by the CMS experiment at the LHC. The analysis targets Lorentz-boosted $H$ pairs identified using a graph neural network. It constrains the strengths relative to the standard model of the $H$ self-coupling and the quartic $VVHH$ couplings, $\kappa_{2V}$, excluding $\kappa_{2V} = 0$ for the first time, with a significance of 6.3 standard deviations when other $H$ couplings are fixed to their standard model values.
DOI: 10.17182/hepdata.128973.v1/t22
title: "Supplemental Table 1" of "Search for nonresonant pair production of highly energetic Higgs bosons decaying to bottom quarks"

description: Major sources of uncertainty in the measurement of the signal strength modifier $\mu$, and their observed impact ($\Delta\mu$) from a fit to the combined data set.
description: A search for nonresonant Higgs boson ($H$) pair production via gluon and vector boson ($V$) fusion is performed in the four-bottom-quark final state, using proton-proton collision data at 13 TeV corresponding to 138 fb$^{-1}$ collected by the CMS experiment at the LHC. The analysis targets Lorentz-boosted $H$ pairs identified using a graph neural network. It constrains the strengths relative to the standard model of the $H$ self-coupling and the quartic $VVHH$ couplings, $\kappa_{2V}$, excluding $\kappa_{2V} = 0$ for the first time, with a significance of 6.3 standard deviations when other $H$ couplings are fixed to their standard model values.
DOI: 10.17182/hepdata.129067.v1/t1
title: "Figure 3 (phi)" of "Observation of Global Spin Alignment of $\phi$ and $K^{*0}$ Vector Mesons in Nuclear Collisions"

description: Global spin alignment of $\phi$ and $K^{*0}$ vector mesons in heavy-ion collisions. The measured matrix element $\rho_{00}$ as a function of beam energy for the $\phi$ and $K^{*0}$ vector mesons within the indicated windows of centrality, transverse momentum ($p_T$) and rapidity ($y$). The open symbols indicate ALICE results for Pb+Pb collisions at 2.76 TeV at $p_{T}$ values of 2.0 and 1.4 GeV/c for the $\phi$ and $K^{*0}$ mesons, respectively, corresponding to the $p_{T}$ bin nearest to the mean $p_{T}$ for the 1.0 – 5.0 GeV/$c$ range assumed for each meson in the present analysis. The red solid curve is a fit to data in the range of $\sqrt{s_{NN}} = 19.6$ to 200 GeV, based on a theoretical calculation with a $\phi$-meson field. Parameter sensitivity of $\rho_{00}$ to the $\phi$-meson field is shown in Ref.5. The red dashed line is an extension of the solid curve with the fitted parameter $G_s^{(y)}$. The black dashed line represents $\rho_{00}=1/3.$
description: Notwithstanding decades of progress since Yukawa first developed a description of the force between nucleons in terms of meson exchange, a full understanding of the strong interaction remains a major challenge in modern science. One remaining difficulty arises from the non-perturbative nature of the strong force, which leads to the phenomenon of quark confinement at distances on the order of the size of the proton. Here we show that in relativistic heavy-ion collisions, where quarks and gluons are set free over an extended volume, two species of produced vector (spin-1) mesons, namely $\phi$ and $K^{*0}$, emerge with a surprising pattern of global spin alignment. In particular, the global spin alignment for $\phi$ is unexpectedly large, while that for $K^{*0}$ is consistent with zero. The observed spin-alignment pattern and magnitude for the $\phi$ cannot be explained by conventional mechanisms, while a model with a connection to strong force fields, i.e. an effective proxy description within the Standard Model and Quantum Chromodynamics, accommodates the current data. This connection, if fully established, will open a potential new avenue for studying the behaviour of strong force fields.
DOI: 10.17182/hepdata.129067.v1/t3
title: "Extended Figure 1a" of "Observation of Global Spin Alignment of $\phi$ and $K^{*0}$ Vector Mesons in Nuclear Collisions"

description: Example of combinatorial background subtracted invariant mass distributions and the extracted yields as a function of $\cos \theta^*$ for $\phi$ and $K^{*0}$ mesons. \textbf{a)} example of $\phi \rightarrow K^+ + K^-$ invariant mass distributions, with combinatorial background subtracted, integrated over $\cos \theta^*$; \textbf{b)} example of $K^{*0} (\overline{K^{*0}}) \rightarrow K^{-} \pi^{+} (K^{+} \pi^{-})$ invariant mass distributions, with combinatorial background subtracted, integrated over $\cos \theta^*$; \textbf{c)} extracted yields of $\phi$ as a function of $\cos \theta^*$; \textbf{d)} extracted yields of $K^{*0}$ as a function of $\cos \theta^*$.
description: Notwithstanding decades of progress since Yukawa first developed a description of the force between nucleons in terms of meson exchange, a full understanding of the strong interaction remains a major challenge in modern science. One remaining difficulty arises from the non-perturbative nature of the strong force, which leads to the phenomenon of quark confinement at distances on the order of the size of the proton. Here we show that in relativistic heavy-ion collisions, where quarks and gluons are set free over an extended volume, two species of produced vector (spin-1) mesons, namely $\phi$ and $K^{*0}$, emerge with a surprising pattern of global spin alignment. In particular, the global spin alignment for $\phi$ is unexpectedly large, while that for $K^{*0}$ is consistent with zero. The observed spin-alignment pattern and magnitude for the $\phi$ cannot be explained by conventional mechanisms, while a model with a connection to strong force fields, i.e. an effective proxy description within the Standard Model and Quantum Chromodynamics, accommodates the current data. This connection, if fully established, will open a potential new avenue for studying the behaviour of strong force fields.