Search for new phenomena in high-mass diphoton final states using 37 fb$^{-1}$ of proton--proton collisions collected at $\sqrt{s}=13$ TeV with the ATLAS detector - INSPIRE

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Search for new phenomena in high-mass diphoton final states using 37 fb $^{-1}$ of proton--proton collisions collected at $\sqrt{s}=13$ TeV with the ATLAS detector

ATLAS

Collaboration

Jul 13, 2017

21 pages

Published in:

Phys.Lett.B 775 (2017) 105-125

Published: Dec 10, 2017

e-Print:

1707.04147 [hep-ex]

DOI:

10.1016/j.physletb.2017.10.039

PDG: Other Mass Limits

Report number:

CERN-EP-2017-132

Experiments:

CERN-LHC-ATLAS

View in:

reference search237 citations

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Abstract: (Elsevier)

Searches for new phenomena in high-mass diphoton final states with the ATLAS experiment at the LHC are presented. The analysis is based on pp collision data corresponding to an integrated luminosity of 36.7 fb −1 at a centre-of-mass energy s=13 TeV recorded in 2015 and 2016. Searches are performed for resonances with spin 0, as predicted by theories with an extended Higgs sector, and for resonances with spin 2, using a warped extra-dimension model as a benchmark model, as well as for non-resonant signals, assuming a large extra-dimension scenario. No significant deviation from the Standard Model is observed. Upper limits are placed on the production cross section times branching ratio to two photons as a function of the resonance mass. In addition, lower limits are set on the ultraviolet cutoff scale in the large extra-dimensions model.

Note:

34 pages in total, author list starting page 18, 4 figures, 3 tables, published in Phys. Lett. B, All figures including auxiliary figures are available at http://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/HIGG-2016-17/

p p: colliding beams
model: higher-dimensional
photon: pair production
final state: two-photon
mass spectrum: two-photon
resonance: model
spin: 2
spin: 0
space-time: warped
space-time: higher-dimensional

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