Search for doubly charged scalar bosons decaying into same-sign $W$ boson pairs with the ATLAS detector

ArXiv 1808.01899 (2018)

Search for pair production of heavy vector-like quarks decaying into hadronic final states in $pp$ collisions at $\sqrt{s} = 13$ TeV with the ATLAS detector

ArXiv 1808.01771 (2018)

Constraints on off-shell Higgs boson production and the Higgs boson total width in $ZZ\to4\ell$ and $ZZ\to2\ell2ν$ final states with the ATLAS detector

ArXiv 1808.01191 (2018)

Impact of low-x resummation on QCD analysis of HERA data

European Physical Journal C: Particles and Fields Springer Verlag 78 (2018) 621

Authors:

H Abdolmaleki, V Bertone, D Britzger, S Camarda, Amanda Cooper-Sarkar, Francesco Giuli, A Glazov, A Kusina, A Luszczak, F Olness, A Sopronov, P Shvydkin, K Wichmann, O Zenaiev, M Bonvini

Abstract:

Fits to the final combined HERA deep-inelastic scattering cross-section data within the conventional DGLAP framework of QCD have shown some tension at low x and low Q2 . A resolution of this tension incorporating ln(1/x) -resummation terms into the HERAPDF fits is investigated using the xFitter program. The kinematic region where this resummation is important is delineated. Such high-energy resummation not only gives a better description of the data, particularly of the longitudinal structure function FL , it also results in a gluon PDF which is steeply rising at low x for low scales, Q2≃2.5GeV2 , contrary to the fixed-order NLO and NNLO gluon PDF

Measurement of the Higgs boson mass in the H -> ZZ* -> 4l and H -> gamma gamma channels with root s=13 TeV pp collisions using the ATLAS detector

Physics Letters B Elsevier 784 (2018) 345-366

Authors:

G Aad, B Abbott, Luca Ambroz

Abstract:

The mass of the Higgs boson is measured in the H→ZZ⁎→4ℓ and in the H→γγ decay channels with 36.1 fb−1 of proton–proton collision data from the Large Hadron Collider at a centre-of-mass energy of 13 TeV recorded by the ATLAS detector in 2015 and 2016. The measured value in the H→ZZ⁎→4ℓ channel is mHZZ⁎=124.79±0.37GeV, while the measured value in the H→γγ channel is mHγγ=124.93±0.40GeV. Combining these results with the ATLAS measurement based on 7 and 8 TeV proton–proton collision data yields a Higgs boson mass of mH=124.97±0.24GeV.