cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.17182/hepdata.153519.v1/t9
title: "Table 9" of "Search for light neutral particles decaying promptly into collimated pairs of electrons or muons in $pp$ collisions at $\sqrt{s}$ = 13 TeV with the ATLAS detector"

description: The reconstruction efficiency for μLJ objects produced in the decay of a γ<sub>d</sub> into a muon pair. The reconstruction efficiency is shown for different dark photon mass hypotheses generated according to the FRVZ signal model. The efficiency is shown as a function of the dark photon p<sub>T</sub>.
description: A search for a dark photon, a new light neutral particle, which decays promptly into collimated pairs of electrons or muons is presented. The search targets dark photons resulting from the exotic decay of the Standard Model Higgs boson, assuming its production via the dominant gluon-gluon fusion mode. The analysis is based on 140 fb <sup>-1</sup> of data collected with the ATLAS detector at the Large Hadron Collider from proton-proton collisions at a center-of-mass energy of 13 TeV. Events with collimated pairs of electrons or muons are analysed and background contributions are estimated using data-driven techniques. No significant excess in the data above the Standard Model background is observed. Upper limits are set at 95&percnt; confidence level on the branching ratio of the Higgs boson decay into dark photons between 0.001&percnt; and 5&percnt;, depending on the assumed dark photon mass and signal model.
DOI: 10.25549/ahf-ouc11399erns
title: Hancock Photographs

description: The Hancock Foundation Archive consists of correspondence, reports, clippings, photographs, sound recordings, film, and other materials, 1823-2005, documenting the activities and history of the Hancock Foundation at the University of Southern California, its founder G. Allan Hancock, and the Hancock family. Included are records of the Foundation's scientific and research activities in marine biology and zoology; the Foundation's Library; the Hancock Museum, housed in the Foundation building on the USC campus; and the research vessel Velero IV, the second of Captain Hancock's ships put into service for research purposes. Also included are historical documents regarding the Hancock family's land interests in Los Angeles, and material documenting the non-scientific interests of Captain Hancock. Specifically this digital collection includes: • Allan Hancock Foundation publications. • Sound recordings produced by the Allan Hancock Foundation for radio broadcast in the 1930's and 1940's. Many of the recordings are of the Hancock Ensemble whose 'cellist was Allan Hancock. Digitized thanks to generous support from the Association for Recorded Sound Collections (ARSC) (https://www.arsc-audio.org/index.php), Lance Bowling and Cambria Music, Kenneth Hayashida MD (USC ’89) • Films and photographs from the Allan Hancock Foundation mostly from the expeditions of the research vessels Velero II, III, and IV. The digitization efforts for the Hancock collection have been financed (in part) with Federal funds from the National Park Service Maritime Heritage grant program (https://www.nps.gov/maritime/grants/apply.htm), administered by the National Park Service, U.S. Department of the Interior. However, the contents and opinions contained herein do not necessarily reflect the views or policies of the Department of the Interior, nor does the mention of trade names or commercial products constitute endorsement or recommendation by the Department of the Interior. The project received Federal financial assistance for preservation of historic maritime resources and for increasing public awareness and appreciation for the maritime heritage of the United States. Under Title VI of the Civil Rights Act of 1964, Section 504 of the Rehabilitation Act of 1973, and the Age Discrimination Act of 1975, as amended, the U.S. Department of the Interior prohibits discrimination on the basis of race, color, national origin, disability or age in its federally funded assisted programs. If you believe you have been discriminated again in any program, activity, or facility as described above, or if you desire further information, please write to: Office of Equal Opportunity National Park Service 1849 C Street, NW Washington, DC 20240. • Station logs from the research vessel Velero IV.
DOI: 10.17182/hepdata.153519.v1/t11
title: "Table 11" of "Search for light neutral particles decaying promptly into collimated pairs of electrons or muons in $pp$ collisions at $\sqrt{s}$ = 13 TeV with the ATLAS detector"

description: The reconstruction efficiency for μLJ objects produced in the decay of a γ<sub>d</sub> into a muon pair. The reconstruction efficiency is shown for different dark photon mass hypotheses generated according to the FRVZ signal model. The efficiency is shown as a function of the ΔR opening between the decay products of a dark photon.
description: A search for a dark photon, a new light neutral particle, which decays promptly into collimated pairs of electrons or muons is presented. The search targets dark photons resulting from the exotic decay of the Standard Model Higgs boson, assuming its production via the dominant gluon-gluon fusion mode. The analysis is based on 140 fb <sup>-1</sup> of data collected with the ATLAS detector at the Large Hadron Collider from proton-proton collisions at a center-of-mass energy of 13 TeV. Events with collimated pairs of electrons or muons are analysed and background contributions are estimated using data-driven techniques. No significant excess in the data above the Standard Model background is observed. Upper limits are set at 95&percnt; confidence level on the branching ratio of the Higgs boson decay into dark photons between 0.001&percnt; and 5&percnt;, depending on the assumed dark photon mass and signal model.
DOI: 10.17182/hepdata.153519.v1/t12
title: "Table 12" of "Search for light neutral particles decaying promptly into collimated pairs of electrons or muons in $pp$ collisions at $\sqrt{s}$ = 13 TeV with the ATLAS detector"

description: The reconstruction efficiency for μLJ objects produced in the decay of a γ<sub>d</sub> into a muon pair. The reconstruction efficiency is shown for a dark photon mass of 0.4 GeV, generated according to the HAHM and FRVZ signal models. The efficiency is shown as a function of the γ<sub>d</sub> p<sub>T</sub>.
description: A search for a dark photon, a new light neutral particle, which decays promptly into collimated pairs of electrons or muons is presented. The search targets dark photons resulting from the exotic decay of the Standard Model Higgs boson, assuming its production via the dominant gluon-gluon fusion mode. The analysis is based on 140 fb <sup>-1</sup> of data collected with the ATLAS detector at the Large Hadron Collider from proton-proton collisions at a center-of-mass energy of 13 TeV. Events with collimated pairs of electrons or muons are analysed and background contributions are estimated using data-driven techniques. No significant excess in the data above the Standard Model background is observed. Upper limits are set at 95&percnt; confidence level on the branching ratio of the Higgs boson decay into dark photons between 0.001&percnt; and 5&percnt;, depending on the assumed dark photon mass and signal model.
DOI: 10.17182/hepdata.153519.v1/t13
title: "Table 13" of "Search for light neutral particles decaying promptly into collimated pairs of electrons or muons in $pp$ collisions at $\sqrt{s}$ = 13 TeV with the ATLAS detector"

description: The reconstruction efficiency for μLJ objects produced in the decay of a γ<sub>d</sub> into a muon pair. The reconstruction efficiency is shown for a dark photon mass of 0.4 GeV, generated according to the HAHM and FRVZ signal models. The efficiency is shown as a function of the ΔR opening between the decay products of a dark photon.
description: A search for a dark photon, a new light neutral particle, which decays promptly into collimated pairs of electrons or muons is presented. The search targets dark photons resulting from the exotic decay of the Standard Model Higgs boson, assuming its production via the dominant gluon-gluon fusion mode. The analysis is based on 140 fb <sup>-1</sup> of data collected with the ATLAS detector at the Large Hadron Collider from proton-proton collisions at a center-of-mass energy of 13 TeV. Events with collimated pairs of electrons or muons are analysed and background contributions are estimated using data-driven techniques. No significant excess in the data above the Standard Model background is observed. Upper limits are set at 95&percnt; confidence level on the branching ratio of the Higgs boson decay into dark photons between 0.001&percnt; and 5&percnt;, depending on the assumed dark photon mass and signal model.
DOI: 10.17182/hepdata.153519.v1/t14
title: "Table 14" of "Search for light neutral particles decaying promptly into collimated pairs of electrons or muons in $pp$ collisions at $\sqrt{s}$ = 13 TeV with the ATLAS detector"

description: The reconstruction efficiency for eLJ objects produced in the decay of a γ<sub>d</sub> into an electron pair. The reconstruction efficiency is shown for different dark photon mass hypotheses generated according to the HAHM signal model. The efficiency is shown as a function of the dark photon p<sub>T</sub>.
description: A search for a dark photon, a new light neutral particle, which decays promptly into collimated pairs of electrons or muons is presented. The search targets dark photons resulting from the exotic decay of the Standard Model Higgs boson, assuming its production via the dominant gluon-gluon fusion mode. The analysis is based on 140 fb <sup>-1</sup> of data collected with the ATLAS detector at the Large Hadron Collider from proton-proton collisions at a center-of-mass energy of 13 TeV. Events with collimated pairs of electrons or muons are analysed and background contributions are estimated using data-driven techniques. No significant excess in the data above the Standard Model background is observed. Upper limits are set at 95&percnt; confidence level on the branching ratio of the Higgs boson decay into dark photons between 0.001&percnt; and 5&percnt;, depending on the assumed dark photon mass and signal model.
DOI: 10.17182/hepdata.153519.v1/t15
title: "Table 15" of "Search for light neutral particles decaying promptly into collimated pairs of electrons or muons in $pp$ collisions at $\sqrt{s}$ = 13 TeV with the ATLAS detector"

description: The reconstruction efficiency for eLJ objects produced in the decay of a γ<sub>d</sub> into an electron pair. The reconstruction efficiency is shown for different dark photon mass hypotheses generated according to the FRVZ signal model. The efficiency is shown as a function of the dark photon p<sub>T</sub>.
description: A search for a dark photon, a new light neutral particle, which decays promptly into collimated pairs of electrons or muons is presented. The search targets dark photons resulting from the exotic decay of the Standard Model Higgs boson, assuming its production via the dominant gluon-gluon fusion mode. The analysis is based on 140 fb <sup>-1</sup> of data collected with the ATLAS detector at the Large Hadron Collider from proton-proton collisions at a center-of-mass energy of 13 TeV. Events with collimated pairs of electrons or muons are analysed and background contributions are estimated using data-driven techniques. No significant excess in the data above the Standard Model background is observed. Upper limits are set at 95&percnt; confidence level on the branching ratio of the Higgs boson decay into dark photons between 0.001&percnt; and 5&percnt;, depending on the assumed dark photon mass and signal model.
DOI: 10.17182/hepdata.153519.v1/t16
title: "Table 16" of "Search for light neutral particles decaying promptly into collimated pairs of electrons or muons in $pp$ collisions at $\sqrt{s}$ = 13 TeV with the ATLAS detector"

description: The reconstruction efficiency for eLJ objects produced in the decay of a γ<sub>d</sub> into a pair of electrons. The reconstruction efficiency is shown for different dark photon mass hypotheses generated according to the HAHM signal model. The efficiency is shown as a function of the ΔR opening between the decay products of a dark photon. The decrease in efficiency, visible at 0.1, is due to the transition between the region of the phase space where eLJs are identified from merged EM showers with two tracks, to the one where eLJs are obtained by the clustering of two resolved electrons.
description: A search for a dark photon, a new light neutral particle, which decays promptly into collimated pairs of electrons or muons is presented. The search targets dark photons resulting from the exotic decay of the Standard Model Higgs boson, assuming its production via the dominant gluon-gluon fusion mode. The analysis is based on 140 fb <sup>-1</sup> of data collected with the ATLAS detector at the Large Hadron Collider from proton-proton collisions at a center-of-mass energy of 13 TeV. Events with collimated pairs of electrons or muons are analysed and background contributions are estimated using data-driven techniques. No significant excess in the data above the Standard Model background is observed. Upper limits are set at 95&percnt; confidence level on the branching ratio of the Higgs boson decay into dark photons between 0.001&percnt; and 5&percnt;, depending on the assumed dark photon mass and signal model.
DOI: 10.17182/hepdata.153519.v1/t17
title: "Table 17" of "Search for light neutral particles decaying promptly into collimated pairs of electrons or muons in $pp$ collisions at $\sqrt{s}$ = 13 TeV with the ATLAS detector"

description: The reconstruction efficiency for eLJ objects produced in the decay of a γ<sub>d</sub> into a pair of electrons. The reconstruction efficiency is shown for different dark photon mass hypotheses generated according to the FRVZ signal model. The efficiency is shown as a function of the ΔR opening between the decay products of a dark photon. The decrease in efficiency, visible at 0.1, is due to the transition between the region of the phase space where eLJs are identified from merged EM showers with two tracks, to the one where eLJs are obtained by the clustering of two resolved electrons.
description: A search for a dark photon, a new light neutral particle, which decays promptly into collimated pairs of electrons or muons is presented. The search targets dark photons resulting from the exotic decay of the Standard Model Higgs boson, assuming its production via the dominant gluon-gluon fusion mode. The analysis is based on 140 fb <sup>-1</sup> of data collected with the ATLAS detector at the Large Hadron Collider from proton-proton collisions at a center-of-mass energy of 13 TeV. Events with collimated pairs of electrons or muons are analysed and background contributions are estimated using data-driven techniques. No significant excess in the data above the Standard Model background is observed. Upper limits are set at 95&percnt; confidence level on the branching ratio of the Higgs boson decay into dark photons between 0.001&percnt; and 5&percnt;, depending on the assumed dark photon mass and signal model.
DOI: 10.17182/hepdata.153519.v1/t18
title: "Table 18" of "Search for light neutral particles decaying promptly into collimated pairs of electrons or muons in $pp$ collisions at $\sqrt{s}$ = 13 TeV with the ATLAS detector"

description: The reconstruction efficiency for eLJ objects produced in the decay of a γ<sub>d</sub> into a pair of electrons. The reconstruction efficiency is shown for a dark photon mass of 0.1 GeV, generated according to the HAHM and FRVZ signal models. The efficiency is shown as a function of the γ<sub>d</sub> p<sub>T</sub>.
description: A search for a dark photon, a new light neutral particle, which decays promptly into collimated pairs of electrons or muons is presented. The search targets dark photons resulting from the exotic decay of the Standard Model Higgs boson, assuming its production via the dominant gluon-gluon fusion mode. The analysis is based on 140 fb <sup>-1</sup> of data collected with the ATLAS detector at the Large Hadron Collider from proton-proton collisions at a center-of-mass energy of 13 TeV. Events with collimated pairs of electrons or muons are analysed and background contributions are estimated using data-driven techniques. No significant excess in the data above the Standard Model background is observed. Upper limits are set at 95&percnt; confidence level on the branching ratio of the Higgs boson decay into dark photons between 0.001&percnt; and 5&percnt;, depending on the assumed dark photon mass and signal model.
DOI: 10.17182/hepdata.153519.v1/t19
title: "Table 19" of "Search for light neutral particles decaying promptly into collimated pairs of electrons or muons in $pp$ collisions at $\sqrt{s}$ = 13 TeV with the ATLAS detector"

description: The reconstruction efficiency for eLJ objects produced in the decay of a γ<sub>d</sub> into a pair of electrons. The reconstruction efficiency is shown for a dark photon mass of 0.1 GeV, generated according to the HAHM and FRVZ signal models. The efficiency is shown as a function of the ΔR opening between the decay products of a dark photon.
description: A search for a dark photon, a new light neutral particle, which decays promptly into collimated pairs of electrons or muons is presented. The search targets dark photons resulting from the exotic decay of the Standard Model Higgs boson, assuming its production via the dominant gluon-gluon fusion mode. The analysis is based on 140 fb <sup>-1</sup> of data collected with the ATLAS detector at the Large Hadron Collider from proton-proton collisions at a center-of-mass energy of 13 TeV. Events with collimated pairs of electrons or muons are analysed and background contributions are estimated using data-driven techniques. No significant excess in the data above the Standard Model background is observed. Upper limits are set at 95&percnt; confidence level on the branching ratio of the Higgs boson decay into dark photons between 0.001&percnt; and 5&percnt;, depending on the assumed dark photon mass and signal model.
DOI: 10.17182/hepdata.153519.v1/t20
title: "Table 20" of "Search for light neutral particles decaying promptly into collimated pairs of electrons or muons in $pp$ collisions at $\sqrt{s}$ = 13 TeV with the ATLAS detector"

description: 95&percnt; CL expected and observed exclusion limits on the branching ratio of the Higgs boson to dark photons as a function of the γ<sub>d</sub> mass for the HAHM model, obtained from the μLJ–μLJ signal region.
description: A search for a dark photon, a new light neutral particle, which decays promptly into collimated pairs of electrons or muons is presented. The search targets dark photons resulting from the exotic decay of the Standard Model Higgs boson, assuming its production via the dominant gluon-gluon fusion mode. The analysis is based on 140 fb <sup>-1</sup> of data collected with the ATLAS detector at the Large Hadron Collider from proton-proton collisions at a center-of-mass energy of 13 TeV. Events with collimated pairs of electrons or muons are analysed and background contributions are estimated using data-driven techniques. No significant excess in the data above the Standard Model background is observed. Upper limits are set at 95&percnt; confidence level on the branching ratio of the Higgs boson decay into dark photons between 0.001&percnt; and 5&percnt;, depending on the assumed dark photon mass and signal model.
DOI: 10.17182/hepdata.153519.v1/t21
title: "Table 21" of "Search for light neutral particles decaying promptly into collimated pairs of electrons or muons in $pp$ collisions at $\sqrt{s}$ = 13 TeV with the ATLAS detector"

description: 95&percnt; CL expected and observed exclusion limits on the branching ratio of the Higgs boson to dark photons as a function of the γ<sub>d</sub> mass for the FRVZ model, obtained from the μLJ–μLJ signal region.
description: A search for a dark photon, a new light neutral particle, which decays promptly into collimated pairs of electrons or muons is presented. The search targets dark photons resulting from the exotic decay of the Standard Model Higgs boson, assuming its production via the dominant gluon-gluon fusion mode. The analysis is based on 140 fb <sup>-1</sup> of data collected with the ATLAS detector at the Large Hadron Collider from proton-proton collisions at a center-of-mass energy of 13 TeV. Events with collimated pairs of electrons or muons are analysed and background contributions are estimated using data-driven techniques. No significant excess in the data above the Standard Model background is observed. Upper limits are set at 95&percnt; confidence level on the branching ratio of the Higgs boson decay into dark photons between 0.001&percnt; and 5&percnt;, depending on the assumed dark photon mass and signal model.
DOI: 10.17182/hepdata.153519.v1/t22
title: "Table 22" of "Search for light neutral particles decaying promptly into collimated pairs of electrons or muons in $pp$ collisions at $\sqrt{s}$ = 13 TeV with the ATLAS detector"

description: 95&percnt; CL expected and observed exclusion limits on the branching ratio of the Higgs boson to dark photons as a function of the γ<sub>d</sub> mass for the HAHM model, obtained from the μLJ–eLJ signal region.
description: A search for a dark photon, a new light neutral particle, which decays promptly into collimated pairs of electrons or muons is presented. The search targets dark photons resulting from the exotic decay of the Standard Model Higgs boson, assuming its production via the dominant gluon-gluon fusion mode. The analysis is based on 140 fb <sup>-1</sup> of data collected with the ATLAS detector at the Large Hadron Collider from proton-proton collisions at a center-of-mass energy of 13 TeV. Events with collimated pairs of electrons or muons are analysed and background contributions are estimated using data-driven techniques. No significant excess in the data above the Standard Model background is observed. Upper limits are set at 95&percnt; confidence level on the branching ratio of the Higgs boson decay into dark photons between 0.001&percnt; and 5&percnt;, depending on the assumed dark photon mass and signal model.
DOI: 10.17182/hepdata.153519.v1/t23
title: "Table 23" of "Search for light neutral particles decaying promptly into collimated pairs of electrons or muons in $pp$ collisions at $\sqrt{s}$ = 13 TeV with the ATLAS detector"

description: 95&percnt; CL expected and observed exclusion limits on the branching ratio of the Higgs boson to dark photons as a function of the γ<sub>d</sub> mass for the FRVZ model, obtained from the μLJ–eLJ signal region.
description: A search for a dark photon, a new light neutral particle, which decays promptly into collimated pairs of electrons or muons is presented. The search targets dark photons resulting from the exotic decay of the Standard Model Higgs boson, assuming its production via the dominant gluon-gluon fusion mode. The analysis is based on 140 fb <sup>-1</sup> of data collected with the ATLAS detector at the Large Hadron Collider from proton-proton collisions at a center-of-mass energy of 13 TeV. Events with collimated pairs of electrons or muons are analysed and background contributions are estimated using data-driven techniques. No significant excess in the data above the Standard Model background is observed. Upper limits are set at 95&percnt; confidence level on the branching ratio of the Higgs boson decay into dark photons between 0.001&percnt; and 5&percnt;, depending on the assumed dark photon mass and signal model.