Search for phenomena beyond the Standard Model in events with large $b$-jet multiplicity using the ATLAS detector at the LHC - INSPIRE

DataBETA

Search for phenomena beyond the Standard Model in events with large $b$ -jet multiplicity using the ATLAS detector at the LHC

ATLAS

Collaboration

Oct 2, 2020

29 pages

Published in:

Eur.Phys.J.C 81 (2021) 1, 11,
Eur.Phys.J.C 81 (2021) 3, 249 (erratum)

Published: Jan 11, 2021

e-Print:

2010.01015 [hep-ex]

DOI:

10.1140/epjc/s10052-020-08730-0,
10.1140/epjc/s10052-021-08970-8 (erratum)

PDG: R-parity violating

{{\widetilde{\mathit t}}}

(Stop) mass limit

Report number:

CERN-EP-2020-147

Experiments:

CERN-LHC-ATLAS

View in:

reference search35 citations

Citations per year

Abstract: (Springer)

A search is presented for new phenomena in events characterised by high jet multiplicity, no leptons (electrons or muons), and four or more jets originating from the fragmentation of b-quarks (b-jets). The search uses

139~\hbox {fb}^{-1}

of

\sqrt{s}

= 13 TeV proton–proton collision data collected by the ATLAS experiment at the Large Hadron Collider during Run 2. The dominant Standard Model background originates from multijet production and is estimated using a data-driven technique based on an extrapolation from events with low b-jet multiplicity to the high b-jet multiplicities used in the search. No significant excess over the Standard Model expectation is observed and 95% confidence-level limits that constrain simplified models of R-parity-violating supersymmetry are determined. The exclusion limits reach 950 GeV in top-squark mass in the models considered.

Note:

40 pages in total, author list starting page 24, 8 figures, 6 tables, submitted to Eur. Phys. J. C. All figures including auxiliary figures are available at http://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/SUSY-2018-38/

p p: colliding beams
stop: direct production
jet: multiplicity: high
jet: bottom
jet: multiple production
bottom: multiple production
p p: scattering
CERN LHC Coll
ATLAS
fragmentation

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