cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.17182/hepdata.146757.v1/t10
title: "Figure6 - Dirac electron" of "Search for long-lived heavy neutral leptons decaying in the CMS muon detectors in proton-proton collisions at $\sqrt{s}$ = 13 TeV"

description: Expected and observed upper 95% CL limits on |VNe|2 as functions of the HNL mass(mN) for a Dirac HNL. For these limit calculations, the HNL is assumed to mix with a single lepton flavor state only. The difference between the expected and observed limits on |VNμ|2 are not visible in this figure.
description: A search for heavy neutral leptons (HNLs) decaying in the CMS muon system is presented. A data sample is used corresponding to an integrated luminosity of 138\fbinv of proton-proton collisions at $\sqrt{s}=13\TeV$, recorded at the CERN LHC in 2016--2018. Decay products of long-lived HNLs could interact with the shielding materials in the CMS muon system and create hadronic and electromagnetic showers detected in the muon chambers. This distinctive signature provides a unique handle to search for HNLs with masses below 4\GeV and proper decay lengths of the order of meters. The signature is sensitive to HNL couplings to all three generations of leptons. Candidate events are required to contain a prompt electron or muon originating from a vertex on the beam axis and a displaced shower in the muon chambers. No significant deviations from the standard model background expectation are observed. In the electron (muon) channel, the most stringent limits to date are set for HNLs in the mass range of 2.1--3.0 (1.9--3.3)\GeV, reaching mixing matrix element squared values as low as $8.6\,(4.6) \times10^{-6}$.
DOI: 10.17182/hepdata.146757.v1/t11
title: "Figure6 - Majorana tau" of "Search for long-lived heavy neutral leptons decaying in the CMS muon detectors in proton-proton collisions at $\sqrt{s}$ = 13 TeV"

description: Expected and observed upper 95% CL limits on |VNtau|2 as functions of the HNL mass(mN) for a Majorana HNL. For these limit calculations, the HNL is assumed to mix with a single lepton flavor state only. The tau neutrino mixing limit is obtained by combining the results from the electron and muon channels. The difference between the expected and observed limits on |VNμ|2 are not visible in this figure.
description: A search for heavy neutral leptons (HNLs) decaying in the CMS muon system is presented. A data sample is used corresponding to an integrated luminosity of 138\fbinv of proton-proton collisions at $\sqrt{s}=13\TeV$, recorded at the CERN LHC in 2016--2018. Decay products of long-lived HNLs could interact with the shielding materials in the CMS muon system and create hadronic and electromagnetic showers detected in the muon chambers. This distinctive signature provides a unique handle to search for HNLs with masses below 4\GeV and proper decay lengths of the order of meters. The signature is sensitive to HNL couplings to all three generations of leptons. Candidate events are required to contain a prompt electron or muon originating from a vertex on the beam axis and a displaced shower in the muon chambers. No significant deviations from the standard model background expectation are observed. In the electron (muon) channel, the most stringent limits to date are set for HNLs in the mass range of 2.1--3.0 (1.9--3.3)\GeV, reaching mixing matrix element squared values as low as $8.6\,(4.6) \times10^{-6}$.
DOI: 10.17182/hepdata.146757.v1/t12
title: "Figure6 - Dirac tau" of "Search for long-lived heavy neutral leptons decaying in the CMS muon detectors in proton-proton collisions at $\sqrt{s}$ = 13 TeV"

description: Expected and observed upper 95% CL limits on |VNtau|2 as functions of the HNL mass(mN) for a Dirac HNL. For these limit calculations, the HNL is assumed to mix with a single lepton flavor state only. The tau neutrino mixing limit is obtained by combining the results from the electron and muon channels. The difference between the expected and observed limits on |VNμ|2 are not visible in this figure.
description: A search for heavy neutral leptons (HNLs) decaying in the CMS muon system is presented. A data sample is used corresponding to an integrated luminosity of 138\fbinv of proton-proton collisions at $\sqrt{s}=13\TeV$, recorded at the CERN LHC in 2016--2018. Decay products of long-lived HNLs could interact with the shielding materials in the CMS muon system and create hadronic and electromagnetic showers detected in the muon chambers. This distinctive signature provides a unique handle to search for HNLs with masses below 4\GeV and proper decay lengths of the order of meters. The signature is sensitive to HNL couplings to all three generations of leptons. Candidate events are required to contain a prompt electron or muon originating from a vertex on the beam axis and a displaced shower in the muon chambers. No significant deviations from the standard model background expectation are observed. In the electron (muon) channel, the most stringent limits to date are set for HNLs in the mass range of 2.1--3.0 (1.9--3.3)\GeV, reaching mixing matrix element squared values as low as $8.6\,(4.6) \times10^{-6}$.
DOI: 10.17182/hepdata.146757.v1/t13
title: "Figure7 - Majorana 1.5 GeV" of "Search for long-lived heavy neutral leptons decaying in the CMS muon detectors in proton-proton collisions at $\sqrt{s}$ = 13 TeV"

description: The largest values of the Majorana HNL mass that are excluded at 95% CL are shown as a function of the mixing matrix elements squared ratios fl with the three lepton generations, considering a fixed mass of 1.5 GeV.
description: A search for heavy neutral leptons (HNLs) decaying in the CMS muon system is presented. A data sample is used corresponding to an integrated luminosity of 138\fbinv of proton-proton collisions at $\sqrt{s}=13\TeV$, recorded at the CERN LHC in 2016--2018. Decay products of long-lived HNLs could interact with the shielding materials in the CMS muon system and create hadronic and electromagnetic showers detected in the muon chambers. This distinctive signature provides a unique handle to search for HNLs with masses below 4\GeV and proper decay lengths of the order of meters. The signature is sensitive to HNL couplings to all three generations of leptons. Candidate events are required to contain a prompt electron or muon originating from a vertex on the beam axis and a displaced shower in the muon chambers. No significant deviations from the standard model background expectation are observed. In the electron (muon) channel, the most stringent limits to date are set for HNLs in the mass range of 2.1--3.0 (1.9--3.3)\GeV, reaching mixing matrix element squared values as low as $8.6\,(4.6) \times10^{-6}$.
DOI: 10.17182/hepdata.146757.v1/t14
title: "Figure7 - Dirac 1.5 GeV" of "Search for long-lived heavy neutral leptons decaying in the CMS muon detectors in proton-proton collisions at $\sqrt{s}$ = 13 TeV"

description: The largest values of the Dirac HNL mass that are excluded at 95% CL are shown as a function of the mixing matrix elements squared ratios fl with the three lepton generations, considering a fixed mass of 1.5 GeV.
description: A search for heavy neutral leptons (HNLs) decaying in the CMS muon system is presented. A data sample is used corresponding to an integrated luminosity of 138\fbinv of proton-proton collisions at $\sqrt{s}=13\TeV$, recorded at the CERN LHC in 2016--2018. Decay products of long-lived HNLs could interact with the shielding materials in the CMS muon system and create hadronic and electromagnetic showers detected in the muon chambers. This distinctive signature provides a unique handle to search for HNLs with masses below 4\GeV and proper decay lengths of the order of meters. The signature is sensitive to HNL couplings to all three generations of leptons. Candidate events are required to contain a prompt electron or muon originating from a vertex on the beam axis and a displaced shower in the muon chambers. No significant deviations from the standard model background expectation are observed. In the electron (muon) channel, the most stringent limits to date are set for HNLs in the mass range of 2.1--3.0 (1.9--3.3)\GeV, reaching mixing matrix element squared values as low as $8.6\,(4.6) \times10^{-6}$.
DOI: 10.17182/hepdata.146757.v1/t15
title: "Figure7 - Majorana ctau 1m" of "Search for long-lived heavy neutral leptons decaying in the CMS muon detectors in proton-proton collisions at $\sqrt{s}$ = 13 TeV"

description: The largest values of the Majorana HNL mass that are excluded at 95% CL are shown as a function of the mixing matrix elements squared ratios fl with the three lepton generations, considering a mean proper decay length of 1 m.
description: A search for heavy neutral leptons (HNLs) decaying in the CMS muon system is presented. A data sample is used corresponding to an integrated luminosity of 138\fbinv of proton-proton collisions at $\sqrt{s}=13\TeV$, recorded at the CERN LHC in 2016--2018. Decay products of long-lived HNLs could interact with the shielding materials in the CMS muon system and create hadronic and electromagnetic showers detected in the muon chambers. This distinctive signature provides a unique handle to search for HNLs with masses below 4\GeV and proper decay lengths of the order of meters. The signature is sensitive to HNL couplings to all three generations of leptons. Candidate events are required to contain a prompt electron or muon originating from a vertex on the beam axis and a displaced shower in the muon chambers. No significant deviations from the standard model background expectation are observed. In the electron (muon) channel, the most stringent limits to date are set for HNLs in the mass range of 2.1--3.0 (1.9--3.3)\GeV, reaching mixing matrix element squared values as low as $8.6\,(4.6) \times10^{-6}$.
DOI: 10.17182/hepdata.146757.v1/t16
title: "Figure7 - Dirac ctau 1m" of "Search for long-lived heavy neutral leptons decaying in the CMS muon detectors in proton-proton collisions at $\sqrt{s}$ = 13 TeV"

description: The largest values of the Dirac HNL mass that are excluded at 95% CL are shown as a function of the mixing matrix elements squared ratios fl with the three lepton generations, considering a mean proper decay length of 1 m.
description: A search for heavy neutral leptons (HNLs) decaying in the CMS muon system is presented. A data sample is used corresponding to an integrated luminosity of 138\fbinv of proton-proton collisions at $\sqrt{s}=13\TeV$, recorded at the CERN LHC in 2016--2018. Decay products of long-lived HNLs could interact with the shielding materials in the CMS muon system and create hadronic and electromagnetic showers detected in the muon chambers. This distinctive signature provides a unique handle to search for HNLs with masses below 4\GeV and proper decay lengths of the order of meters. The signature is sensitive to HNL couplings to all three generations of leptons. Candidate events are required to contain a prompt electron or muon originating from a vertex on the beam axis and a displaced shower in the muon chambers. No significant deviations from the standard model background expectation are observed. In the electron (muon) channel, the most stringent limits to date are set for HNLs in the mass range of 2.1--3.0 (1.9--3.3)\GeV, reaching mixing matrix element squared values as low as $8.6\,(4.6) \times10^{-6}$.
DOI: 10.17182/hepdata.146758.v1/t1
title: "Event yields in 2016BCDEF signal" of "Search for fractionally charged particles in proton-proton collisions at $\sqrt{s}$ = 13 TeV"

description: Signal yields for two charge scenarios considered in the analysis, as well as their associated uncertainties.
description: No data abstract available.
DOI: 10.17182/hepdata.146758.v1/t2
title: "Event yields in 2016GH signal" of "Search for fractionally charged particles in proton-proton collisions at $\sqrt{s}$ = 13 TeV"

description: Signal yields for two charge scenarios considered in the analysis, as well as their associated uncertainties.
description: No data abstract available.
DOI: 10.17182/hepdata.146758.v1/t3
title: "Event yields in 2017BCDEF signal" of "Search for fractionally charged particles in proton-proton collisions at $\sqrt{s}$ = 13 TeV"

description: Signal yields for two charge scenarios considered in the analysis, as well as their associated uncertainties.
description: No data abstract available.
DOI: 10.17182/hepdata.146758.v1/t4
title: "Event yields in 2018ABCD signal" of "Search for fractionally charged particles in proton-proton collisions at $\sqrt{s}$ = 13 TeV"

description: Signal yields for two charge scenarios considered in the analysis, as well as their associated uncertainties.
description: No data abstract available.
DOI: 10.17182/hepdata.146758.v1/t5
title: "Event yields in 2016BCDEF data" of "Search for fractionally charged particles in proton-proton collisions at $\sqrt{s}$ = 13 TeV"

description: Distribution of $N_{\text{hits}}^{\text{low dE/dx}}$ in the SR and the CR for the early 2016 data set, as well as for an FCP signal at a mass of 100 GeV and different charge scenarios. The vertical bars and the shaded area correspond to the statistical uncertainty in the SR and the CR, respectively. The p-value of the fit is 6%. The two lower panels show the ratio of the number of tracks observed in the CR (upper) and SR (lower), and the fit function. The vertical bars correspond to the uncertainty from statistical sources, while the shaded area shows the systematic uncertainty in the fit due to the choice of the fitting function and the binomial fit range as explained in low dE/dx the main text. Comparing with respect to the binomial fit starting at $N_{\text{hits}}^{\text{low dE/dx}} = 2$, and not $N_{\text{hits}}^{\text{low dE/dx}} = 1$, is needed to account for the fact that early 2016 data is more strongly affected low dE/dx by instrumental effects that widen the N hits distribution.
description: No data abstract available.
DOI: 10.17182/hepdata.146693.v1/t301
title: "MM, $|y^{t\bar{t}Z}|$, particle, SR-3L-ttZ" of "Inclusive and differential cross-section measurements of $t\bar{t}Z$ production in $pp$ collisions at $\sqrt{s}=13$ TeV with the ATLAS detector, including EFT and spin-correlation interpretations"

description: Migration matrix for $|y^{t\bar{t}Z}|$ variable at particle-level in region SR-3L-ttZ.
description: Inclusive and differential cross section measurements of $t\bar{t}Z$ production in $pp$ collisions at $\sqrt{s}$=13 TeV with the ATLAS detector, including EFT and spin correlations interpretations

The fiducial regions for the dilepton channel are defined as:
- Exactly 2 leptons ($e$ or $\mu$) with transverse momentum greater than 30, 15 GeV for leading and subleading lepton, respectively.
- The sum of the two lepton charges is required to be zero.
- Exactly one opposite-sign-same-flavour (OSSF) lepton pair (considered to be lepton pair from $Z$ boson) with invaraint mass compatible with $Z$ boson ($|m_{\ell\ell}^{Z}-m_{Z}|&lt;10$ GeV).
- Three orthogonal signal regions defined based on the jet and $b$-jet multiplicity.
- At least 5 jets with transverse momentum greater than 25 GeV.
- $b$-jets requirements: at least one $b$-jet tagged with fixed 77% $b$-tagging working point.

The fiducial regions for the trilepton channel are defined as:
- Exactly 3 leptons ($e$ or $\mu$) with transverse momentum greater than 27, 20, 15 GeV for leading, subleading and third lepton, respectively.
- The sum of the three lepton charges is required to be $\pm$1.
- At least one opposite-sign-same-flavour (OSSF) lepton pair (considered to be lepton pair from $Z$ boson) with invaraint mass compatible with $Z$ boson ($|m_{\ell\ell}^{Z}-m_{Z}|&lt;10$ GeV) and $m_{OSSF}&gt;10$ GeV for each OSSF lepton pair.
- Three orthogonal signal regions combined for both inclusive and differential cross section measurements.
- At least 3 jets with transverse momentum greater than 25 GeV.
- $b$-jets requirements: at least one $b$-jet tagged with fixed 85% $b$-tagging working point.
- Signal regions definitions based on the values of the deep neural network discriminants and $b$-jets requirements.

The fiducial regions for the tetralepton channel are defined as:
- Exactly 4 leptons ($e$ or $\mu$) with transverse momentum greater than 27, 7, 7, 7 GeV for leading, subleading, third and fourth lepton, respectively.
- The sum of the four lepton charges is required to be zero.
- At least one opposite-sign-same-flavor (OSSF) lepton pair (considered to be lepton pair from $Z$ boson) with invaraint mass compatible with $Z$ boson ($|m_{\ell\ell}^{Z}-m_{Z}|&lt;20$ GeV) and $m_{OSSF}&gt;10$ GeV for each OSSF lepton pair.
- Four signal regions separated based on based on the flavour composition of the non-$Z$ lepton pair (same flavour, different flavour) and value of the deep neural network discriminant.
- At least 2 jets with transverse momentum greater than 25 GeV.
- At least one $b$-jet tagged with the 85% $b$-tagging working point.
DOI: 10.17182/hepdata.146758.v1/t6
title: "Event yields in 2016GH data" of "Search for fractionally charged particles in proton-proton collisions at $\sqrt{s}$ = 13 TeV"

description: Distribution of $N_{\text{hits}}^{\text{low dE/dx}}$ in the SR and the CR for the late 2016 data set, as well as for an FCP signal at a mass of 100 GeV and different charge scenarios. The vertical bars and the shaded area correspond to the statistical uncertainty in the SR and the CR, respectively. The p-value of the fit is 78%. The two lower panels show the ratio of the number of tracks observed in the CR (upper) and SR (lower), and the fit function. The vertical bars correspond to the uncertainty from statistical sources, while the shaded area shows the systematic uncertainty in the fit due to the choice of the fitting function and the binomial fit range as explained in low dE/dx the main text.
description: No data abstract available.
DOI: 10.17182/hepdata.146758.v1/t7
title: "Event yields in 2017BCDEF data" of "Search for fractionally charged particles in proton-proton collisions at $\sqrt{s}$ = 13 TeV"

description: Distribution of $N_{\text{hits}}^{\text{low dE/dx}}$ in the SR and the CR for the 2017 data set, as well as for an FCP signal at a mass of 100 GeV and different charge scenarios. The vertical bars and the shaded area correspond to the statistical uncertainty in the SR and the CR, respectively. The p-value of the fit is 65%. The two lower panels show the ratio of the number of tracks observed in the CR (upper) and SR (lower), and the fit function. The vertical bars correspond to the uncertainty from statistical sources, while the shaded area shows the systematic uncertainty in the fit due to the choice of the fitting function and the binomial fit range as explained in low dE/dx the main text.
description: No data abstract available.
DOI: 10.17182/hepdata.146758.v1/t8
title: "Event yields in 2018ABCD data" of "Search for fractionally charged particles in proton-proton collisions at $\sqrt{s}$ = 13 TeV"

description: Distribution of $N_{\text{hits}}^{\text{low dE/dx}}$ in the SR and the CR for the 2018 data set, as well as for an FCP signal at a mass of 100 GeV and different charge scenarios. The vertical bars and the shaded area correspond to the statistical uncertainty in the SR and the CR, respectively. The p-value of the fit is 9%. The two lower panels show the ratio of the number of tracks observed in the CR (upper) and SR (lower), and the fit function. The vertical bars correspond to the uncertainty from statistical sources, while the shaded area shows the systematic uncertainty in the fit due to the choice of the fitting function and the binomial fit range as explained in low dE/dx the main text.
description: No data abstract available.
DOI: 10.17182/hepdata.146758.v1/t9
title: "2D excluded region" of "Search for fractionally charged particles in proton-proton collisions at $\sqrt{s}$ = 13 TeV"

description: Exclusion region (hatched) at 95% CL in the FCP charge-mass plane for the considered signal. The expected exclusion is shown with the associated 1 and 2 standard deviations $\sigma$ bands. Signal points at charges 0.9, 0.8, 2/3, 0.5, and 1/3 e are connected by straight lines to guide the eye. This is a conservative interpolation. Previous exclusions from CMS [Phys. Rev. D 87 (2013) 092008), JHEP 07 (2013) 122] as well as OPAL [Phys. Lett. B 572 (2003) 8] are given for comparison.
description: No data abstract available.
DOI: 10.17182/hepdata.146758.v2/t1
title: "Event yields in 2016BCDEF signal" of "Search for fractionally charged particles in proton-proton collisions at $\sqrt{s}$ = 13 TeV"

description: Signal yields for the charge scenarios considered in the analysis, as well as their associateds uncertainties.
description: No data abstract available.
DOI: 10.17182/hepdata.146758.v2/t2
title: "Event yields in 2016GH signal" of "Search for fractionally charged particles in proton-proton collisions at $\sqrt{s}$ = 13 TeV"

description: Signal yields for the charge scenarios considered in the analysis, as well as their associateds uncertainties.
description: No data abstract available.
DOI: 10.17182/hepdata.146758.v2/t3
title: "Event yields in 2017BCDEF signal" of "Search for fractionally charged particles in proton-proton collisions at $\sqrt{s}$ = 13 TeV"

description: Signal yields for the charge scenarios considered in the analysis, as well as their associateds uncertainties.
description: No data abstract available.
DOI: 10.17182/hepdata.146758.v2/t4
title: "Event yields in 2018ABCD signal" of "Search for fractionally charged particles in proton-proton collisions at $\sqrt{s}$ = 13 TeV"

description: Signal yields for the charge scenarios considered in the analysis, as well as their associateds uncertainties.
description: No data abstract available.
DOI: 10.17182/hepdata.146758.v2/t5
title: "Event yields in 2016BCDEF data" of "Search for fractionally charged particles in proton-proton collisions at $\sqrt{s}$ = 13 TeV"

description: Distribution of $N_{\text{hits}}^{\text{low dE/dx}}$ in the SR and the CR for the early 2016 data set, as well as for an FCP signal at a mass of 100 GeV and different charge scenarios. The vertical bars and the shaded area correspond to the statistical uncertainty in the SR and the CR, respectively. The p-value of the fit is 6%. The two lower panels show the ratio of the number of tracks observed in the CR (upper) and SR (lower), and the fit function. The vertical bars correspond to the uncertainty from statistical sources, while the shaded area shows the systematic uncertainty in the fit due to the choice of the fitting function and the binomial fit range as explained in low dE/dx the main text. Comparing with respect to the binomial fit starting at $N_{\text{hits}}^{\text{low dE/dx}} = 2$, and not $N_{\text{hits}}^{\text{low dE/dx}} = 1$, is needed to account for the fact that early 2016 data is more strongly affected low dE/dx by instrumental effects that widen the N hits distribution.
description: No data abstract available.
DOI: 10.17182/hepdata.146758.v2/t6
title: "Event yields in 2016GH data" of "Search for fractionally charged particles in proton-proton collisions at $\sqrt{s}$ = 13 TeV"

description: Distribution of $N_{\text{hits}}^{\text{low dE/dx}}$ in the SR and the CR for the late 2016 data set, as well as for an FCP signal at a mass of 100 GeV and different charge scenarios. The vertical bars and the shaded area correspond to the statistical uncertainty in the SR and the CR, respectively. The p-value of the fit is 78%. The two lower panels show the ratio of the number of tracks observed in the CR (upper) and SR (lower), and the fit function. The vertical bars correspond to the uncertainty from statistical sources, while the shaded area shows the systematic uncertainty in the fit due to the choice of the fitting function and the binomial fit range as explained in low dE/dx the main text.
description: No data abstract available.