Search for pair production of third-generation leptoquarks decaying into a bottom quark and a ? -lepton with the ATLAS detector
Küçük Resim Yok
Tarih
2023
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Institute for Ionics
Erişim Hakkı
info:eu-repo/semantics/openAccess
Özet
A search for pair-produced scalar or vector leptoquarks decaying into a b-quark and a ? -lepton is presented using the full LHC Run 2 (2015–2018) data sample of 139 fb - 1 collected with the ATLAS detector in proton–proton collisions at a centre-of-mass energy of s=13 TeV. Events in which at least one ? -lepton decays hadronically are considered, and multivariate discriminants are used to extract the signals. No significant deviations from the Standard Model expectation are observed and 95% confidence-level upper limits on the production cross-section are derived as a function of leptoquark mass and branching ratio B into a ? -lepton and b-quark. For scalar leptoquarks, masses below 1460 GeV are excluded assuming B= 100 %, while for vector leptoquarks the corresponding limit is 1650 GeV (1910 GeV) in the minimal-coupling (Yang–Mills) scenario. © 2023, The Author(s).
Açıklama
Anahtar Kelimeler
Elementary Particles, Germanium Compounds, Signal Processing, A-Center, Atlas Detectors, Bottom Quarks, Center-Of-Mass Energies, Centre-Of-Mass Energies, Data Sample, Leptoquarks, Pair Production, Proton Proton Collisions, Third Generation, Germanium Alloys
Kaynak
European Physical Journal C
WoS Q Değeri
Scopus Q Değeri
N/A
Cilt
83
Sayı
11
