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Phenomenology 2016 Symposium

9–11 May 2016
University of Pittsburgh
US/Eastern timezone

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Session

QCD & Electroweak

S09
10 May 2016, 14:00
G29 (Benedum Hall)

G29

Benedum Hall

Presentation materials

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  1. 153. Recent QCD Results from ATLAS
    Pekka Sinervo (University of Toronto (CA))
    10/05/2016, 14:00
    parallel talk

    The ATLAS collaboration has performed studies of a wide range of QCD phenomena, from soft particle to hard photon and jet production. Among recent results are the measurement of Z event shape observables sensitive to the modelling of the underlying event, and the measurement of diffractive dijet production with a large rapidity gap, which tests the interplay of soft and hard phenomena. The...

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  2. 107. Analytic control of jet substructure
    Laís Sarem Schunk (IPhT, CEA - Saclay)
    10/05/2016, 14:15
    parallel talk

    I will talk about the importance of boosted jets and jet substructure at the LHC. Then, I will make a comparison between techniques that discriminate two-pronged signals from QCD background using constraints on energy flow within boosted jets. To that aim, I focus on three commonly-used jet shapes: N-subjettiness, the mass-drop parameter and energy-correlation functions. I will show that we...

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  3. 131. Hadron Resonances from Lattice QCD
    Andrew Hanlon (University of Pittsburgh)
    10/05/2016, 14:30
    parallel talk

    Our group studied the low-lying hadron spectrum of lattice QCD on a large $32^3 \times 256$
    anisotropic space-time lattice at a near-physical pion mass of $240$ MeV.
    Quark fields were smeared using a
    Laplacian Heaviside kernel which is later exploited to estimate quark
    propagation with a novel method: the Dirac matrix-inverse is stochastically
    estimated by introducing noise vectors in the...

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  4. 27. Resolving the Proton Radius Puzzle Using QED-NRQED Effective Field Theory
    Steven Dye (Wayne State University)
    10/05/2016, 14:45
    parallel talk

    The proton radius puzzle challenges our understanding of the structure of the proton. It can be an indication of a new force that couples to muons, but not to electrons. An effective field theory analysis using Non-Relativistic Quantum Electrodynamics (NRQED) indicates that the muonic hydrogen result can in interpreted as a large, muon-proton spin-independent contact interaction. The muonic...

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  5. 133. Effective field theories vs. oblique parameters in precision electroweak analyses
    Zhengkang Zhang (University of Michigan)
    10/05/2016, 15:00
    parallel talk

    TeV-scale new physics addressing the hierarchy problem can leave imprints on precision observables. In the absence of new light states, effective field theories (EFT) provide a consistent framework to characterize deviations from the Standard Model that is completely general. On the other hand, the historically influential oblique parameters (most notably S, T parameters) formalism is...

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  6. 167. Recent electroweak results from ATLAS
    Prof. Al Goshaw (Duke University)
    10/05/2016, 15:15
    parallel talk

    The talk will summarize recent measurements of multi-boson production by the
    ATLAS Collaboration.

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  7. 154. ATLAS measurements of vector boson production
    Chiara Debenedetti (University of California,Santa Cruz (US))
    10/05/2016, 15:30
    parallel talk

    Vector boson production in pp collisions at 7, 8 and 13 TeV has been extensively studied by ATLAS. Recent results include the precision measurements of the transverse momentum of the Z/gamma* boson production, sensitive to soft resummation effects, hard jet emissions and electroweak corrections. A precise measurement of the angular coefficients of the Z­boson production tests the underlying...

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