cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.17182/hepdata.153850.v1/t8
title: "Figure 6 left" of "Search for heavy long-lived charged particles with large ionization energy loss in proton-proton collisions at $\sqrt{s}$ = 13 TeV"

description: Cross section limits for gluino and supersymmetric top R-hadrons for both background prediction methods.
description: A search for heavy, long-lived, charged particles with large ionization energy loss within the silicon tracker of the CMS experiment is presented. A data set of proton-proton collisions at a center of mass energy at $\sqrt{s} = 13~\mathrm{TeV}$, collected in 2017 and 2018 at the CERN LHC, corresponding to an integrated luminosity of $101~\mathrm{fb}^{-1}$, is used in this analysis. Two different approaches for the search are taken. A new method exploits the independence of the silicon pixel and strips measurements, while the second method improves on previous techniques using ionization to determine a mass selection. No significant excess of events above the background expectation is observed. The results are interpreted in the context of the pair production of supersymmetric particles, namely gluinos, top squarks, and tau sleptons, and of the Drell--Yan pair production of fourth generation ($\tau'$) leptons with an electric charge equal to or twice the absolute value of the electron charge ($e$). An interpretation of a $\mathrm{Z'}$ boson decaying to two $\tau'$ leptons with an electric charge equal to $2e$ is presented for the first time. The $95\%$ confidence upper limits on the production cross section are extracted for each of these hypothetical particles.
DOI: 10.17182/hepdata.153850.v1/t9
title: "Figure 6 right" of "Search for heavy long-lived charged particles with large ionization energy loss in proton-proton collisions at $\sqrt{s}$ = 13 TeV"

description: Cross section limits for supersymmetric tau models for both background prediction methods.
description: A search for heavy, long-lived, charged particles with large ionization energy loss within the silicon tracker of the CMS experiment is presented. A data set of proton-proton collisions at a center of mass energy at $\sqrt{s} = 13~\mathrm{TeV}$, collected in 2017 and 2018 at the CERN LHC, corresponding to an integrated luminosity of $101~\mathrm{fb}^{-1}$, is used in this analysis. Two different approaches for the search are taken. A new method exploits the independence of the silicon pixel and strips measurements, while the second method improves on previous techniques using ionization to determine a mass selection. No significant excess of events above the background expectation is observed. The results are interpreted in the context of the pair production of supersymmetric particles, namely gluinos, top squarks, and tau sleptons, and of the Drell--Yan pair production of fourth generation ($\tau'$) leptons with an electric charge equal to or twice the absolute value of the electron charge ($e$). An interpretation of a $\mathrm{Z'}$ boson decaying to two $\tau'$ leptons with an electric charge equal to $2e$ is presented for the first time. The $95\%$ confidence upper limits on the production cross section are extracted for each of these hypothetical particles.
DOI: 10.25549/ahf-ouc11399erml
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.153850.v1/t11
title: "Figure 7 right" of "Search for heavy long-lived charged particles with large ionization energy loss in proton-proton collisions at $\sqrt{s}$ = 13 TeV"

description: Cross section limits for Z prime to multicharged tau prime model for both background prediction methods. All Z prime models assume a narrow width, and a 100% branching fraction to 600 GeV tau primes.
description: A search for heavy, long-lived, charged particles with large ionization energy loss within the silicon tracker of the CMS experiment is presented. A data set of proton-proton collisions at a center of mass energy at $\sqrt{s} = 13~\mathrm{TeV}$, collected in 2017 and 2018 at the CERN LHC, corresponding to an integrated luminosity of $101~\mathrm{fb}^{-1}$, is used in this analysis. Two different approaches for the search are taken. A new method exploits the independence of the silicon pixel and strips measurements, while the second method improves on previous techniques using ionization to determine a mass selection. No significant excess of events above the background expectation is observed. The results are interpreted in the context of the pair production of supersymmetric particles, namely gluinos, top squarks, and tau sleptons, and of the Drell--Yan pair production of fourth generation ($\tau'$) leptons with an electric charge equal to or twice the absolute value of the electron charge ($e$). An interpretation of a $\mathrm{Z'}$ boson decaying to two $\tau'$ leptons with an electric charge equal to $2e$ is presented for the first time. The $95\%$ confidence upper limits on the production cross section are extracted for each of these hypothetical particles.
DOI: 10.17182/hepdata.153850.v1/t12
title: "Figure 8 left" of "Search for heavy long-lived charged particles with large ionization energy loss in proton-proton collisions at $\sqrt{s}$ = 13 TeV"

description: 2D exclusion showing the observed cross section limit as a function of the multicharged tau prime mass and Z prime mass for the ionization method.
description: A search for heavy, long-lived, charged particles with large ionization energy loss within the silicon tracker of the CMS experiment is presented. A data set of proton-proton collisions at a center of mass energy at $\sqrt{s} = 13~\mathrm{TeV}$, collected in 2017 and 2018 at the CERN LHC, corresponding to an integrated luminosity of $101~\mathrm{fb}^{-1}$, is used in this analysis. Two different approaches for the search are taken. A new method exploits the independence of the silicon pixel and strips measurements, while the second method improves on previous techniques using ionization to determine a mass selection. No significant excess of events above the background expectation is observed. The results are interpreted in the context of the pair production of supersymmetric particles, namely gluinos, top squarks, and tau sleptons, and of the Drell--Yan pair production of fourth generation ($\tau'$) leptons with an electric charge equal to or twice the absolute value of the electron charge ($e$). An interpretation of a $\mathrm{Z'}$ boson decaying to two $\tau'$ leptons with an electric charge equal to $2e$ is presented for the first time. The $95\%$ confidence upper limits on the production cross section are extracted for each of these hypothetical particles.
DOI: 10.17182/hepdata.153850.v1/t13
title: "Figure 8 right" of "Search for heavy long-lived charged particles with large ionization energy loss in proton-proton collisions at $\sqrt{s}$ = 13 TeV"

description: 2D exclusion showing the observed cross section limit as a function of the multicharged tau prime mass and Z prime mass for the mass method.
description: A search for heavy, long-lived, charged particles with large ionization energy loss within the silicon tracker of the CMS experiment is presented. A data set of proton-proton collisions at a center of mass energy at $\sqrt{s} = 13~\mathrm{TeV}$, collected in 2017 and 2018 at the CERN LHC, corresponding to an integrated luminosity of $101~\mathrm{fb}^{-1}$, is used in this analysis. Two different approaches for the search are taken. A new method exploits the independence of the silicon pixel and strips measurements, while the second method improves on previous techniques using ionization to determine a mass selection. No significant excess of events above the background expectation is observed. The results are interpreted in the context of the pair production of supersymmetric particles, namely gluinos, top squarks, and tau sleptons, and of the Drell--Yan pair production of fourth generation ($\tau'$) leptons with an electric charge equal to or twice the absolute value of the electron charge ($e$). An interpretation of a $\mathrm{Z'}$ boson decaying to two $\tau'$ leptons with an electric charge equal to $2e$ is presented for the first time. The $95\%$ confidence upper limits on the production cross section are extracted for each of these hypothetical particles.
DOI: 10.17182/hepdata.153850.v1/t14
title: "Table 2" of "Search for heavy long-lived charged particles with large ionization energy loss in proton-proton collisions at $\sqrt{s}$ = 13 TeV"

description: Cumulative selection efficiency for the data and for two signal hypotheses.
description: A search for heavy, long-lived, charged particles with large ionization energy loss within the silicon tracker of the CMS experiment is presented. A data set of proton-proton collisions at a center of mass energy at $\sqrt{s} = 13~\mathrm{TeV}$, collected in 2017 and 2018 at the CERN LHC, corresponding to an integrated luminosity of $101~\mathrm{fb}^{-1}$, is used in this analysis. Two different approaches for the search are taken. A new method exploits the independence of the silicon pixel and strips measurements, while the second method improves on previous techniques using ionization to determine a mass selection. No significant excess of events above the background expectation is observed. The results are interpreted in the context of the pair production of supersymmetric particles, namely gluinos, top squarks, and tau sleptons, and of the Drell--Yan pair production of fourth generation ($\tau'$) leptons with an electric charge equal to or twice the absolute value of the electron charge ($e$). An interpretation of a $\mathrm{Z'}$ boson decaying to two $\tau'$ leptons with an electric charge equal to $2e$ is presented for the first time. The $95\%$ confidence upper limits on the production cross section are extracted for each of these hypothetical particles.
DOI: 10.17182/hepdata.153850.v1/t15
title: "Table 3" of "Search for heavy long-lived charged particles with large ionization energy loss in proton-proton collisions at $\sqrt{s}$ = 13 TeV"

description: Expected and observed mass limits obtained using 2017-2018 data for various HSCP candidate models,for the two background estimate methods.
description: A search for heavy, long-lived, charged particles with large ionization energy loss within the silicon tracker of the CMS experiment is presented. A data set of proton-proton collisions at a center of mass energy at $\sqrt{s} = 13~\mathrm{TeV}$, collected in 2017 and 2018 at the CERN LHC, corresponding to an integrated luminosity of $101~\mathrm{fb}^{-1}$, is used in this analysis. Two different approaches for the search are taken. A new method exploits the independence of the silicon pixel and strips measurements, while the second method improves on previous techniques using ionization to determine a mass selection. No significant excess of events above the background expectation is observed. The results are interpreted in the context of the pair production of supersymmetric particles, namely gluinos, top squarks, and tau sleptons, and of the Drell--Yan pair production of fourth generation ($\tau'$) leptons with an electric charge equal to or twice the absolute value of the electron charge ($e$). An interpretation of a $\mathrm{Z'}$ boson decaying to two $\tau'$ leptons with an electric charge equal to $2e$ is presented for the first time. The $95\%$ confidence upper limits on the production cross section are extracted for each of these hypothetical particles.
DOI: 10.17182/hepdata.153850.v1/t16
title: "Appendix Figure 9" of "Search for heavy long-lived charged particles with large ionization energy loss in proton-proton collisions at $\sqrt{s}$ = 13 TeV"

description: Mass windows used in the mass method as a function of the signal target mass for the signal samples assuming a charge of $1e$ and $2e$, as appropriate to the signal model.
description: A search for heavy, long-lived, charged particles with large ionization energy loss within the silicon tracker of the CMS experiment is presented. A data set of proton-proton collisions at a center of mass energy at $\sqrt{s} = 13~\mathrm{TeV}$, collected in 2017 and 2018 at the CERN LHC, corresponding to an integrated luminosity of $101~\mathrm{fb}^{-1}$, is used in this analysis. Two different approaches for the search are taken. A new method exploits the independence of the silicon pixel and strips measurements, while the second method improves on previous techniques using ionization to determine a mass selection. No significant excess of events above the background expectation is observed. The results are interpreted in the context of the pair production of supersymmetric particles, namely gluinos, top squarks, and tau sleptons, and of the Drell--Yan pair production of fourth generation ($\tau'$) leptons with an electric charge equal to or twice the absolute value of the electron charge ($e$). An interpretation of a $\mathrm{Z'}$ boson decaying to two $\tau'$ leptons with an electric charge equal to $2e$ is presented for the first time. The $95\%$ confidence upper limits on the production cross section are extracted for each of these hypothetical particles.
DOI: 10.17182/hepdata.153850.v1/t17
title: "Appendix Figure 10" of "Search for heavy long-lived charged particles with large ionization energy loss in proton-proton collisions at $\sqrt{s}$ = 13 TeV"

description: Mass spectrum predicted in the validation region defined by $0.018 &lt; G_{\text{i}}^{\text{Strips}} &lt; 0.057$ and $p_{\mathrm{T}} &gt; 70$ GeV. The thresholds used in the $G_{\text{i}}^{\text{Strips}}$ requirement represent the 50% and 90% quantile of the distribution.
description: A search for heavy, long-lived, charged particles with large ionization energy loss within the silicon tracker of the CMS experiment is presented. A data set of proton-proton collisions at a center of mass energy at $\sqrt{s} = 13~\mathrm{TeV}$, collected in 2017 and 2018 at the CERN LHC, corresponding to an integrated luminosity of $101~\mathrm{fb}^{-1}$, is used in this analysis. Two different approaches for the search are taken. A new method exploits the independence of the silicon pixel and strips measurements, while the second method improves on previous techniques using ionization to determine a mass selection. No significant excess of events above the background expectation is observed. The results are interpreted in the context of the pair production of supersymmetric particles, namely gluinos, top squarks, and tau sleptons, and of the Drell--Yan pair production of fourth generation ($\tau'$) leptons with an electric charge equal to or twice the absolute value of the electron charge ($e$). An interpretation of a $\mathrm{Z'}$ boson decaying to two $\tau'$ leptons with an electric charge equal to $2e$ is presented for the first time. The $95\%$ confidence upper limits on the production cross section are extracted for each of these hypothetical particles.
DOI: 10.17182/hepdata.153850.v1/t18
title: "Appendix Figure 11 top left" of "Search for heavy long-lived charged particles with large ionization energy loss in proton-proton collisions at $\sqrt{s}$ = 13 TeV"

description: Trigger efficiency for the $\tilde{g}$ signals as a function of $\beta$ for $\text{abs(}\eta\text{)}&lt;0.3$. The up and down variations are conservatively estimated assuming a delay of 1.5 ns in the muon chambers (equivalent to the time resolution of the chambers) and are used to evaluate the signal systematic uncertainties.
description: A search for heavy, long-lived, charged particles with large ionization energy loss within the silicon tracker of the CMS experiment is presented. A data set of proton-proton collisions at a center of mass energy at $\sqrt{s} = 13~\mathrm{TeV}$, collected in 2017 and 2018 at the CERN LHC, corresponding to an integrated luminosity of $101~\mathrm{fb}^{-1}$, is used in this analysis. Two different approaches for the search are taken. A new method exploits the independence of the silicon pixel and strips measurements, while the second method improves on previous techniques using ionization to determine a mass selection. No significant excess of events above the background expectation is observed. The results are interpreted in the context of the pair production of supersymmetric particles, namely gluinos, top squarks, and tau sleptons, and of the Drell--Yan pair production of fourth generation ($\tau'$) leptons with an electric charge equal to or twice the absolute value of the electron charge ($e$). An interpretation of a $\mathrm{Z'}$ boson decaying to two $\tau'$ leptons with an electric charge equal to $2e$ is presented for the first time. The $95\%$ confidence upper limits on the production cross section are extracted for each of these hypothetical particles.
DOI: 10.17182/hepdata.153850.v1/t19
title: "Appendix Figure 11 top middle" of "Search for heavy long-lived charged particles with large ionization energy loss in proton-proton collisions at $\sqrt{s}$ = 13 TeV"

description: Trigger efficiency for the $\tilde{g}$ signals as a function of $\beta$ for $0.3&lt;\text{abs(}\eta\text{)}&lt;0.6$. The up and down variations are conservatively estimated assuming a delay of 1.5 ns in the muon chambers (equivalent to the time resolution of the chambers) and are used to evaluate the signal systematic uncertainties.
description: A search for heavy, long-lived, charged particles with large ionization energy loss within the silicon tracker of the CMS experiment is presented. A data set of proton-proton collisions at a center of mass energy at $\sqrt{s} = 13~\mathrm{TeV}$, collected in 2017 and 2018 at the CERN LHC, corresponding to an integrated luminosity of $101~\mathrm{fb}^{-1}$, is used in this analysis. Two different approaches for the search are taken. A new method exploits the independence of the silicon pixel and strips measurements, while the second method improves on previous techniques using ionization to determine a mass selection. No significant excess of events above the background expectation is observed. The results are interpreted in the context of the pair production of supersymmetric particles, namely gluinos, top squarks, and tau sleptons, and of the Drell--Yan pair production of fourth generation ($\tau'$) leptons with an electric charge equal to or twice the absolute value of the electron charge ($e$). An interpretation of a $\mathrm{Z'}$ boson decaying to two $\tau'$ leptons with an electric charge equal to $2e$ is presented for the first time. The $95\%$ confidence upper limits on the production cross section are extracted for each of these hypothetical particles.
DOI: 10.17182/hepdata.153850.v1/t20
title: "Appendix Figure 11 top right" of "Search for heavy long-lived charged particles with large ionization energy loss in proton-proton collisions at $\sqrt{s}$ = 13 TeV"

description: Trigger efficiency for the $\tilde{g}$ signals as a function of $\beta$ for $0.6&lt;\text{abs(}\eta\text{)}&lt;0.9$. The up and down variations are conservatively estimated assuming a delay of 1.5 ns in the muon chambers (equivalent to the time resolution of the chambers) and are used to evaluate the signal systematic uncertainties.
description: A search for heavy, long-lived, charged particles with large ionization energy loss within the silicon tracker of the CMS experiment is presented. A data set of proton-proton collisions at a center of mass energy at $\sqrt{s} = 13~\mathrm{TeV}$, collected in 2017 and 2018 at the CERN LHC, corresponding to an integrated luminosity of $101~\mathrm{fb}^{-1}$, is used in this analysis. Two different approaches for the search are taken. A new method exploits the independence of the silicon pixel and strips measurements, while the second method improves on previous techniques using ionization to determine a mass selection. No significant excess of events above the background expectation is observed. The results are interpreted in the context of the pair production of supersymmetric particles, namely gluinos, top squarks, and tau sleptons, and of the Drell--Yan pair production of fourth generation ($\tau'$) leptons with an electric charge equal to or twice the absolute value of the electron charge ($e$). An interpretation of a $\mathrm{Z'}$ boson decaying to two $\tau'$ leptons with an electric charge equal to $2e$ is presented for the first time. The $95\%$ confidence upper limits on the production cross section are extracted for each of these hypothetical particles.