Kavli Affiliate: David W. Miller | First 5 Authors: David W. Miller, , , , | Summary: Measurements are presented of the jet invariant mass and substructure in proton-proton collisions at sqrt{s} = 7 TeV with the ATLAS detector using an integrated luminosity of 37 pb-1. These results exercise the tools for distinguishing the signatures […]
Kavli Affiliate: Radomir Smida | First 5 Authors: R. Smida, , , , | Summary: The Pierre Auger Observatory is the largest observatory of high-energy cosmic rays. It is located in Argentina and has been taking data since January 2004. Extensive air showers initiated by cosmic rays are measured by the hybrid detector, which combines […]
Kavli Affiliate: Austin Joyce | First 5 Authors: Austin Joyce, Justin Khoury, , , | Summary: For a single scalar field with unit sound speed minimally coupled to Einstein gravity, there are exactly three distinct cosmological solutions which produce a scale invariant spectrum of curvature perturbations in a dynamical attractor background, assuming vacuum initial conditions: […]
Kavli Affiliate: Jeffrey McMahon | First 5 Authors: Jeffrey M. McMahon, David M. Ceperley, , , | Summary: Superconductivity in the recently proposed ground-state structures of atomic metallic hydrogen is investigated over the pressure range 500 GPa to 3.5 TPa. Near molecular dissociation, the electron–phonon coupling $λ$ and renormalized Coulomb repulsion are similar to the […]
Kavli Affiliate: Jeffrey McMahon | First 5 Authors: Jeffrey M. McMahon, , , , | Summary: textit{Ab initio} random structure searching based on density functional theory is used to determine the ground-state structures of ice at high pressures. Including estimates of lattice zero-point energies, ice is found to adopt three novel crystal phases. The underlying […]
Kavli Affiliate: Jeffrey F. Miller | First 5 Authors: Jerome A. Orosz, James F. Steiner, Jeffrey E. McClintock, Manuel A. P. Torres, Ronald A. Remillard | Summary: We present an improved dynamical model of the X-ray binary and microquasar XTE J1550-564 based on new moderate-resolution optical spectroscopy and near-infrared photometry. By combining our new radial […]
Kavli Affiliate: Jonathan Rosner | First 5 Authors: Jonathan L. Rosner, , , , | Summary: The reaction $e^+ e^- to (D_s^{*+} D_s^- + {rm c.c.})$ has been used with great success at the CLEO-c detector, and will be a source of valuable future data from the BES-III detector, to obtain information about the properties […]
Fangzhou Jiang, Song Huang, Qiusheng Gu, , | Summary: [[{“value”:”We make use of the images from the Sloan Digital Sky Survey Stripe 82 to present an analysis of r band surface brightness profiles and radial color gradients (g – r, u – r) in 111 nearby early-type galaxies (ETGs). With Stripe 82 images, we are […]
Kavli Affiliate: Juan I. Collar | First 5 Authors: J. I. Collar, , , , | Summary: Savage et al. have recently put forward the claim that results from the XENON10 experiment are incompatible with the totality of both DAMA/LIBRA and CoGeNT experimental regions. In this brief note the source of this erroneous conclusion is […]
Kavli Affiliate: Craig J. Hogan | First 5 Authors: Craig J. Hogan, , , , | Summary: A theory of position of massive bodies is proposed that results in an observable quantum behavior of geometry at the Planck scale, $t_P$. Departures from classical world lines in flat spacetime are described by Planckian noncommuting operators for […]