Aad, G;
Abbott, B;
Abbott, DC;
Abud, AA;
Abeling, K;
Abhayasinghe, DK;
Abidi, SH;
... Zwalinski, L; + view all
(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
, Article 261801. 10.1103/PhysRevLett.125.261801.
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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 e e + p ( μ μ + 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 e e + p = 11.0 ± 2.6 ( stat ) ± 1.2 ( syst ) ± 0.3 ( lumi ) and σ μ μ + p = 7.2 ± 1.6 ( stat ) ± 0.9 ( syst ) ± 0.2 ( lumi ) fb in the dielectron and dimuon channel, respectively.
| Type: | Article |
|---|---|
| Title: | Observation and Measurement of Forward Proton Scattering in Association with Lepton Pairs Produced via the Photon Fusion Mechanism at ATLAS |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1103/PhysRevLett.125.261801 |
| Publisher version: | https://doi.org/10.1103/PhysRevLett.125.261801 |
| Language: | English |
| Additional information: | Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license (https://creativecommons.org/licenses/by/4.0/). 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. |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Physics and Astronomy |
| URI: | https://discovery-pp.ucl.ac.uk/id/eprint/10120150 |
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