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    Observation and Measurement of Forward Proton Scattering in Association with Lepton Pairs Produced via the Photon Fusion Mechanism at ATLAS

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    PhysRevLett.125.261801.pdf
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    Description:
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    Author
    ATLAS Collaboration
    Affiliation
    Department of Physics, University of Arizona
    Issue Date
    2020
    
    Metadata
    Show full item record
    Publisher
    American Physical Society
    Citation
    Aad, G., Abbott, B., Abbott, D. C., Abud, A. A., Abeling, K., Abhayasinghe, D. K., ... & Balli, F. (2020). Observation and measurement of forward proton scattering in association with lepton pairs produced via the photon fusion mechanism at ATLAS. Physical review letters, 125(26), 261801.
    Journal
    Physical Review Letters
    Rights
    Copyright © 2020 CERN, for the ATLAS Collaboration.
    Collection Information
    This item from the UA Faculty Publications collection is made available by the University of Arizona with support from the University of Arizona Libraries. If you have questions, please contact us at repository@u.library.arizona.edu.
    Abstract
    The observation of forward proton scattering in association with lepton pairs (e+e-+p or μ+μ-+p) produced via photon fusion is presented. The scattered proton is detected by the ATLAS Forward Proton spectrometer, while the leptons are reconstructed by the central ATLAS detector. Proton-proton collision data recorded in 2017 at a center-of-mass energy of s=13 TeV are analyzed, corresponding to an integrated luminosity of 14.6 fb-1. A total of 57 (123) candidates in the ee+p (μμ+p) final state are selected, allowing the background-only hypothesis to be rejected with a significance exceeding 5 standard deviations in each channel. Proton-tagging techniques are introduced for cross-section measurements in the fiducial detector acceptance, corresponding to σee+p=11.0±2.6(stat)±1.2(syst)±0.3(lumi) and σμμ+p=7.2±1.6(stat)±0.9(syst)±0.2(lumi) fb in the dielectron and dimuon channel, respectively. © 2020 CERN.
    Note
    Immediate access
    ISSN
    0031-9007
    DOI
    10.1103/PhysRevLett.125.261801
    Version
    Final published version
    ae974a485f413a2113503eed53cd6c53
    10.1103/PhysRevLett.125.261801
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    UA Faculty Publications

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