Search for contact interactions and large extra dimensions in the dilepton channel using proton–proton collisions at $\sqrt{s}=8$ TeV with the ATLAS detector
Search for contact interactions and large extra dimensions in the dilepton channel using proton–proton collisions at $\sqrt{s}=8$ TeV with the ATLAS detector
Search for contact interactions and large extra dimensions in the dilepton channel using proton–proton collisions at $\sqrt{s}=8$ TeV with the ATLAS detector
autor:
Pałka Marek
współtwórca:
Współautorami artykułu są członkowie ATLAS Collaboration w liczbie 2890
instytucja sprawcza:
ATLAS Collaboration
tytuł czasopisma:
The European Physical Journal. C, Particles and Fields
A search is conducted for non-resonant new phenomena in dielectron and dimuon final states, originating from either contact interactions or large extra spatial dimensions. The LHC 2012 proton–proton collision dataset recorded by the ATLAS detector is used, corresponding to 20 fb$^{-1}$ at $\sqrt{s}=8$ TeV. The dilepton invariant mass spectrum is a discriminating variable in both searches, with the contact interaction search additionally utilizing the dilepton forward-backward asymmetry. No significant deviations from the Standard Model expectation are observed. Lower limits are set on the llqq contact interaction scale \Lambda between 15.4 TeV and 26.3 TeV, at the 95 % credibility level. For large extra spatial dimensions, lower limits are set on the string scale $M_{S}$ between 3.2 TeV to 5.0 TeV.
liczba arkuszy wydawniczych:
1,5
wydział: instytut / zakład / katedra:
Wydział Fizyki, Astronomii i Informatyki Stosowanej : Instytut Fizyki im. Mariana Smoluchowskiego