REVIEW 4 cited by
Search for neutral long-lived particles in $pp$ collisions at $\sqrt{s}=13$ TeV that decay into displaced hadronic jets in the ATLAS calorimeter
Not yet reviewed by Pith; the record is open.
This paper has not been read by Pith yet. Machine review is queued; the pith claim, tier, and objections will appear here once it completes.
SPECIMEN: schema-true, not a live event
T0 review · schema-true
One-sentence machine reading of the paper's core claim.
pith:XXXXXXXX · record.json · timestamp
Signed reviews
abstract
A search for decays of pair-produced neutral long-lived particles (LLPs) is presented using 139 fb$^{-1}$ of proton-proton collision data collected by the ATLAS detector at the LHC in 2015-2018 at a centre-of-mass energy of 13 TeV. Dedicated techniques were developed for the reconstruction of displaced jets produced by LLPs decaying hadronically in the ATLAS hadronic calorimeter. Two search regions are defined for different LLP kinematic regimes. The observed numbers of events are consistent with the expected background, and limits for several benchmark signals are determined. For a SM Higgs boson with a mass of 125 GeV, branching ratios above 10% are excluded at 95% confidence level for values of $c$ times LLP mean proper lifetime in the range between 20 mm and 10 m depending on the model. Upper limits are also set on the cross-section times branching ratio for scalars with a mass of 60 GeV and for masses between 200 GeV and 1 TeV.
Forward citations
Cited by 4 Pith papers
-
Prospects for probing light photophobic axion-like particles via displaced vertex signals at the CEPC
At the CEPC Z-pole (91.2 GeV, 100 ab^-1), displaced-vertex searches for photophobic ALPs via Z→aγ could probe g_aWW from about 10^-3 to 0.68 TeV^-1 for m_a=1-9 GeV.
-
Emerging Photon Jets in the Hadronic Calorimeter: A Novel Signature of Neutral Long-Lived Particles at the LHC
A new 'emerging photon jet' signature in the hadronic calorimeter could make neutral long-lived particles decaying to photons visible at the HL-LHC.
-
Notes on recasting the ATLAS-EXOT-2019-23 search for pairs of displaced hadronic jets in the ATLAS calorimeter
An independent validation of the ATLAS EXOT-2019-23 reinterpretation map shows it works well for high-pT benchmarks but fails for low-mass and short-lifetime signals.
-
Heavy Neutral Leptons without Prejudice
HL-LHC and FCC-ee can probe HNL Yukawa couplings down to y^2 near 10^-4 to 10^-6 depending on mass; at zero mixing, Higgs width precision is the strongest constraint and the two colliders have comparable reach.
Discussion (0). Continue with ORCID to comment.