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Tevatron Run II combination of the effective leptonic electroweak mixing angle

ArXiv 1801.06283 (2018)

Authors:

CDF Collaboration, D0 Collaboration
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Further studies of isolated photon production with a jet in deep inelastic scattering at HERA

Journal of High Energy Physics Springer 2018:32 (2018)

Authors:

H Abramowicz, I Abt, L Adamczyk, M Adamus, R Aggarwal, S Antonelli, V Aushev, Y Aushev, O Behnke, U Behrens, A Bertolin, I Bloch, I Brock, NH Brook, R Brugnera, A Bruni, PJ Bussey, A Caldwell, M Capua, CD Catterall, J Chwastowski, J Ciborowski, R Ciesielski, Amanda M Cooper-Sarkar, M Corradi

Abstract:

Isolated photons with high transverse energy have been studied in deep inelastic ep scattering with the ZEUS detector at HERA, using an integrated luminosity of 326 pb−1 in the range of exchanged-photon virtuality 10-350 GeV2. Outgoing isolated photons with transverse energy 4 ≺ E T γ  ≺ 15 GeV and pseudorapidity − 0.7 ≺ η γ  ≺ 0.9 were measured with accompanying jets having transverse energy and pseudorapidity 2.5≺ E T jet ≺ 35 GeV and −1.5 ≺ ηjet ≺ 1.8, respectively. Differential cross sections are presented for the following variables: the fraction of the incoming photon energy and momentum that is transferred to the outgoing photon and the leading jet; the fraction of the incoming proton energy transferred to the photon and leading jet; the differences in azimuthal angle and pseudorapidity between the outgoing photon and the leading jet and between the outgoing photon and the scattered electron. Comparisons are made with theoretical predictions: a leading-logarithm Monte Carlo simulation, a next-to-leading-order QCD prediction, and a prediction using the k T -factorisation approach.
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Measurements of $t\bar{t}$ differential cross-sections of highly boosted top quarks decaying to all-hadronic final states in $pp$ collisions at $\sqrt{s}=13\,$ TeV using the ATLAS detector

ArXiv 1801.02052 (2018)
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Combination of inclusive and differential (Formula Presented) charge asymmetry measurements using ATLAS and CMS data at (Formula Presented)= 7 and 8 TeV

Journal of High Energy Physics (2018)

Authors:

M Aaboud, G Aad, B Abbott, O Abdinov, B Abeloos, SH Abidi, OS Abouzeid, NL Abraham, H Abramowicz, H Abreu, Y Abulaiti, BS Acharya, S Adachi, L Adamczyk, J Adelman, M Adersberger, T Adye, AA Affolder, Y Afik, C Agheorghiesei, JA Aguilar-Saavedra, SP Ahlen, F Ahmadov, G Aielli, S Akatsuka, TP Åkesson, E Akilli, AV Akimov, GL Alberghi, J Albert, P Albicocco, MJ Alconada Verzini, SC Alderweireldt, M Aleksa, IN Aleksandrov, C Alexa, G Alexander, T Alexopoulos, M Alhroob, B Ali, M Aliev, G Alimonti, J Alison, SP Alkire, BM Allbrooke, BW Allen, PP Allport, A Aloisio, A Alonso, F Alonso

Abstract:

© CERN, for the benefit of the ATLAS-CMS Collaboration. This paper presents combinations of inclusive and differential measurements of the charge asymmetry (AC) in top quark pair (tt) events with a lepton+jets signature by the ATLAS and CMS Collaborations, using data from LHC proton-proton collisions at centreof- mass energies of 7 and 8TeV. The data correspond to integrated luminosities of about 5 and 20 fb–1for each experiment, respectively. The resulting combined LHC measurements of the inclusive charge asymmetry are ACLHC7= 0:005±0:007 (stat) ±0:006 (syst) at 7TeV and ACLHC7= 0:0055 ± 0:0023 (stat) ± 0:0025 (syst) at 8TeV. These values, as well as the combination of ACmeasurements as a function of the invariant mass of the [formula presented] system at 8TeV, are consistent with the respective standard model predictions.
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Electroweak measurements at the tevatron

Proceedings of the 53rd Rencontres de Moriond - 2018 Electroweak Interactions and Unified Theories, EW 2018 (2018) 97-102

Abstract:

The Fermilab Tevatron produced proton-antiproton collisions at a center-of-mass energy of √s = 1.96 TeV between 2001 and 2011. Using an integrated luminosity of ≈ 10 fb−1 collected by each of the general-purpose experiments CDF and D0, many precision measurements were performed. I present the Tevatron's highest-precision electroweak measurements: the final combined measurement of the forward-backward asymmetry of charged leptons from Z-boson decays, and the ongoing measurements of the W boson mass and the charge-asymmetry of leptons from its decays.