Search for new phenomena in dijet events using 37 fb$^{-1}$ of $pp$ collision data collected at $\sqrt{s}=$13 TeV with the ATLAS detector - INSPIRE

DataBETA

Search for new phenomena in dijet events using 37 fb $^{-1}$ of $pp$ collision data collected at $\sqrt{s}=$ 13 TeV with the ATLAS detector

ATLAS

Collaboration

Mar 27, 2017

42 pages

Published in:

Phys.Rev.D 96 (2017) 5, 052004

Published: Sep 28, 2017

e-Print:

1703.09127 [hep-ex]

DOI:

10.1103/PhysRevD.96.052004

PDG: Scale Limits for Contact Interactions:

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

Report number:

CERN-EP-2017-042

Experiments:

CERN-LHC-ATLAS

View in:

reference search387 citations

Citations per year

Abstract: (APS)

Dijet events are studied in the proton-proton collision data set recorded at s=13 TeV with the ATLAS detector at the Large Hadron Collider in 2015 and 2016, corresponding to integrated luminosities of 3.5 fb−1 and 33.5 fb−1 respectively. Invariant mass and angular distributions are compared to background predictions and no significant deviation is observed. For resonance searches, a new method for fitting the background component of the invariant mass distribution is employed. The data set is then used to set upper limits at a 95% confidence level on a range of new physics scenarios. Excited quarks with masses below 6.0 TeV are excluded, and limits are set on quantum black holes, heavy W′ bosons, W* bosons, and a range of masses and couplings in a Z′ dark matter mediator model. Model-independent limits on signals with a Gaussian shape are also set, using a new approach allowing factorization of physics and detector effects. From the angular distributions, a scale of new physics in contact interaction models is excluded for scenarios with either constructive or destructive interference. These results represent a substantial improvement over those obtained previously with lower integrated luminosity.

Note:

42 pages in total, author list starting page 26, 6 figures, 2 tables. Submitted to PRD. All figures including auxiliary figures are available at https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/EXOT-2016-21/

p p: colliding beams
dark matter: mediation
black hole: quantum
scale: new physics
p p: scattering
jet: angular distribution
background
ATLAS
dijet: hadroproduction
contact interaction

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