Rubin-LSST

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Jet mass and substructure of inclusive jets in sqrt(s) = 7 TeV pp collisions with the ATLAS experiment

Abstract:

Recent studies have highlighted the potential of jet substructure techniques to identify the hadronic decays of boosted heavy particles. These studies all rely upon the assumption that the internal substructure of jets generated by QCD radiation is well understood. In this article, this assumption is tested on an inclusive sample of jets recorded with the ATLAS detector in 2010, which corresponds to 35 pb^-1 of pp collisions delivered by the LHC at sqrt(s) = 7 TeV. In a subsample of events with single pp collisions, measurementes corrected for detector efficiency and resolution are presented with full systematic uncertainties. Jet invariant mass, kt splitting scales and n-subjettiness variables are presented for anti-kt R = 1.0 jets and Cambridge-Aachen R = 1.2 jets. Jet invariant-mass spectra for Cambridge-Aachen R = 1.2 jets after a splitting and filtering procedure are also presented. Leading-order parton-shower Monte Carlo predictions for these variables are found to be broadly in agreement with data. The dependence of mean jet mass on additional pp interactions is also explored.
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Large Synoptic Survey Telescope White Paper; The Case for Matching U-band on Deep Drilling Fields

Authors:

BW Holwerda, A Baker, S Blyth, S Kannappan, D Obreschkow, S Ravindranath, E Elson, M Vaccari, S Crawford, M Bershady, N Hathi, N Maddox, R Taylor, MATTHEW Jarvis, J Bridge

Abstract:

U-band observations with the LSST have yet to be fully optimized in cadence. The straw man survey design is a simple coverage of the medium-deep-fast survey. Here we argue that deep coverage of the four deep drilling fields (XMM-LSS, ECDFS, ELAIS-S1 and COSMOS) has a much higher scientific return, given that these are also the target of the Southern Hemisphere's Square Kilometer Array Pathfinder, the MeerKAT specifically, deep radio observations.
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Measurement of the B meson and b quark cross-sections in $p\barp$ collisions at $\sqrts=$ 1.8-TeV using the exclusive decays $B^+ \to J/ψ K^+$ and $B^0 \to J/ψ K^*0$

16th International Symposium on Lepton and Photon Interactions

Authors:

F Abe, others

Modelling baryonic feedback for survey cosmology

Open Journal of Astrophysics

Authors:

Nora Elisa Chisari, Alexander J Mead, Shahab Joudaki, Pedro Ferreira, Aurel Schneider, Joseph Mohr, Tilman Tröster, David Alonso, Ian G McCarthy, Sergio Martin-Alvarez, Julien Devriendt, Adrianne Slyz, Marcel P van Daalen

Abstract:

Observational cosmology in the next decade will rely on probes of the distribution of matter in the redshift range between $0
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Monte Carlo simulations of B(d)0 —\ensuremath> pi+ pi- from p p interactions at s**1/2 = 40-TeV

Authors:

OR Long, NS Lockyer, PT Keener, F Azfar, KT McDonald, JG Heinrich, LA Roberts