Please use this identifier to cite or link to this item: http://hdl.handle.net/2440/129801
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Type: Journal article
Title: Observation and measurement of forward proton scattering in association with lepton pairs produced via the photon fusion mechanism at ATLAS
Author: Aad, G.
Abbott, B.
Abbott, D.C.
Abed Abud, A.
Abeling, K.
Abhayasinghe, D.K.
Abidi, S.H.
AbouZeid, O.S.
Abraham, N.L.
Abramowicz, H.
Abreu, H.
Abulaiti, Y.
Acharya, B.S.
Achkar, B.
Adam, L.
Adam Bourdarios, C.
Adamczyk, L.
Adamek, L.
Adelman, J.
Adiguzel, A.
et al.
Citation: Physical Review Letters, 2020; 125(26):261801-1-261801-21
Publisher: American Physical Society
Issue Date: 2020
ISSN: 0031-9007
1079-7114
Statement of
Responsibility: 
G. Aad … D. Duvnjak … P. Jackson … J.L. Oliver … A.S. Sharma … M.J. White … et al. [The ATLAS Collaboration]
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 σ(ee+p) = 11.0 ± 2.6(stat) ± 1.2(syst) ± 0.3(lumi) and σ(μμ+p) = 7.2 ± 1.6(stat) ± 0.9(syst ) ± 0.2(lumi)  fb in the dielectron and dimuon channel, respectively.
Keywords: ATLAS Collaboration
Rights: © 2020 CERN, for the ATLAS Collaboration. Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. Funded by SCOAP³.
RMID: 1000032491
DOI: 10.1103/physrevlett.125.261801
Appears in Collections:Physics publications

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