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

Aad G.
•
Abbott B.
•
Abbott D. C.
altro
Zwalinski L.
2020
  • journal article

Periodico
PHYSICAL REVIEW LETTERS
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.
DOI
10.1103/PhysRevLett.125.261801
WOS
WOS:000601155900004
Archivio
http://hdl.handle.net/11390/1197388
info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-85099242774
Diritti
open access
Scopus© citazioni
10
Data di acquisizione
Jun 2, 2022
Vedi dettagli
Web of Science© citazioni
21
Data di acquisizione
Mar 25, 2024
Visualizzazioni
2
Data di acquisizione
Apr 19, 2024
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