Search for contact interactions and large extra dimensions in the dilepton mass spectra from proton-proton collisions at $\sqrt{s} =$ 13 TeV - INSPIRE

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Search for contact interactions and large extra dimensions in the dilepton mass spectra from proton-proton collisions at $\sqrt{s} =$ 13 TeV

CMS

Collaboration

Dec 26, 2018

35 pages

Published in:

JHEP 04 (2019) 114

Published: Apr 17, 2019

e-Print:

1812.10443 [hep-ex]

DOI:

10.1007/JHEP04(2019)114 (publication)

PDG: Scale Limits for Contact Interactions:

\Lambda\mathrm {({{\mathit e}} {{\mathit e}} {{\mathit q}} {{\mathit q}} )}

Report number:

CMS-EXO-17-025,
CERN-EP-2018-326

Experiments:

CERN-LHC-CMS

View in:

reference search44 citations

Citations per year

Abstract: (Springer)

A search for nonresonant excesses in the invariant mass spectra of electron and muon pairs is presented. The analysis is based on data from proton-proton collisions at a center-of-mass energy of 13 TeV recorded by the CMS experiment in 2016, corresponding to a total integrated luminosity of 36 fb

^{−1}

. No significant deviation from the standard model is observed. Limits are set at 95% confidence level on energy scales for two general classes of nonresonant models. For a class of fermion contact interaction models, lower limits ranging from 20 to 32 TeV are set on the characteristic compositeness scale Λ. For the Arkani-Hamed, Dimopoulos, and Dvali model of large extra dimensions, the first results in the dilepton final state at 13 TeV are reported, and values of the ultraviolet cutoff parameter Λ

_{T}

below 6.9 TeV are excluded. A combination with recent CMS diphoton results improves this exclusion to Λ

_{T}

below 7.7 TeV, providing the most sensitive limits to date in nonhadronic final states.

Note:

Replaced with the published version. Added the journal reference and the DOI. All the figures and tables can be found at http://cms-results.web.cern.ch/cms-results/public-results/publications/EXO-17-025 (CMS Public Pages) •
Submitted to JHEP

Beyond Standard Model
Hadron-Hadron scattering (experiments)
p p: scattering
p p: colliding beams
dilepton: mass spectrum
dimuon: mass spectrum
mass spectrum: (muon+ muon-)
dilepton: final state
mass spectrum: (electron positron)
electron: pair production

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