TY - JOUR
T1 - Search for phenomena beyond the Standard Model in events with large b-jet multiplicity using the ATLAS detector at the LHC
AU - ATLAS Collaboration
AU - Aad, G
AU - Åkesson, Torsten
AU - Bocchetta, Simona
AU - Corrigan, Eric Edward
AU - Doglioni, Caterina
AU - Geisen, Jannik
AU - Gregersen, Kristian
AU - Brottmann Hansen, Eva
AU - Hedberg, Vincent
AU - Jarlskog, Göran
AU - Kellermann, Edgar
AU - Konya, Balazs
AU - Lytken, Else
AU - Mankinen, Katja
AU - Marcon, Caterina
AU - Mjörnmark, Ulf
AU - Mullier, Geoffrey André Adrien
AU - Pöttgen, Ruth
AU - Poulsen, Trine
AU - Skorda, Eleni
AU - Smirnova, Oxana
AU - Zwalinski, L
PY - 2021
Y1 - 2021
N2 - 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 139fb-1 of 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. © 2021, The Author(s).
AB - 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 139fb-1 of 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. © 2021, The Author(s).
U2 - 10.1140/epjc/s10052-020-08730-0
DO - 10.1140/epjc/s10052-020-08730-0
M3 - Article
SN - 1434-6044
VL - 81
JO - European Physical Journal C
JF - European Physical Journal C
IS - 1
M1 - 11
ER -