Search for periodic signals in the dielectron and diphoton invariant mass spectra using 139 fb$^{−1}$ of pp collisions at $ \sqrt{s} $ = 13 TeV with the ATLAS detector - INSPIRE

Search for periodic signals in the dielectron and diphoton invariant mass spectra using 139 fb $^{−1}$ of pp collisions at $\sqrt{s}$ = 13 TeV with the ATLAS detector

ATLAS

Collaboration

May 18, 2023

47 pages

Published in:

JHEP 10 (2023) 079

Published: Oct 13, 2023

e-Print:

2305.10894 [hep-ex]

DOI:

10.1007/JHEP10(2023)079

Report number:

CERN-EP-2023-073

Experiments:

CERN-LHC-ATLAS,
CERN-LHC-ATLAS

View in:

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Abstract: (Springer)

A search for physics beyond the Standard Model inducing periodic signals in the dielectron and diphoton invariant mass spectra is presented using 139 fb

^{−1}

of

\sqrt{s}

= 13 TeV pp collision data collected by the ATLAS experiment at the LHC. Novel search techniques based on continuous wavelet transforms are used to infer the frequency of periodic signals from the invariant mass spectra and neural network classifiers are used to enhance the sensitivity to periodic resonances. In the absence of a signal, exclusion limits are placed at the 95% confidence level in the two-dimensional parameter space of the clockwork gravity model. Model-independent searches for deviations from the background-only hypothesis are also performed.[graphic not available: see fulltext]

Note:

47 pages in total, author list starting page 30, 10 figures, 2 tables, published as JHEP 10 (2023) 079. All figures including auxiliary figures are available at http://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/EXOT-2019-40

Beyond Standard Model
Hadron-Hadron Scattering
Particle and Resonance Production
p p: scattering
p p: colliding beams
electron: pair production
photon: pair production
gravitation: model
dimension: 2
spin: resonance

References(80)

Figures(24)

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