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We analyze the potential of the first LHC physics run, assuming 1/fb at sqrt[s] = 7 TeV, to discover Supersymmetry (SUSY). The results are based on SUSY parameter fits following a frequentist approach. They include the experimental…

High Energy Physics - Phenomenology · Physics 2010-09-15 S. Heinemeyer

Cosmic magnification is due to the weak gravitational lensing of sources in the distant Universe by foreground large-scale structure leading to coherent changes in the observed number density of the background sources. Depending on the…

The IceCube evidence for cosmic neutrinos in the high-energy starting events (HESE) sample has inspired a large number of hypothesis on their origin, mainly due to the poor precision on the measurement of the direction of showering events.…

High Energy Astrophysical Phenomena · Physics 2014-11-19 M. Spurio

Analyses have found a "haze" of anomalous microwave emission surrounding the Galactic Center in the WMAP sky maps. A recent study using Fermi data detected a similar haze in the gamma-ray. Several studies have modeled these hazes as…

High Energy Astrophysical Phenomena · Physics 2015-05-18 Matthew McQuinn , Matias Zaldarriaga

Recently the ATLAS and CMS experiments have reported modest excesses in the diphoton channel at around 95 GeV.~A number of recent studies have examined whether these could be due to an extended electroweak symmetry breaking (EWSB) sector,…

High Energy Physics - Phenomenology · Physics 2026-01-27 Yingnan Xu , Dikai Li , Roberto Vega , Roberto Vega-Morales , Keping Xie

Flux-rope-based magnetohydrodynamic modeling of coronal mass ejections (CMEs) is a promising tool for the prediction of the CME arrival time and magnetic field at Earth. In this work, we introduce a constant-turn flux rope model and use it…

Space Physics · Physics 2022-07-20 Talwinder Singh , Tae K. Kim , Nikolai V. Pogorelov , Charles N. Arge

It has been known for more than thirty years that the distribution of molecular gas in the innermost 300 parsecs of the Milky Way, the Central Molecular Zone, is strongly asymmetric. Indeed, approximately three quarters of molecular…

The sensitivity for CMS searches for supersymmetry is evaluated in the context of an upgraded LHC at a center-of-mass energy of 14 TeV and an integrated luminosity of 300 fb-1. Results for several key searches for supersymmetry are…

High Energy Physics - Experiment · Physics 2019-08-13 Keith A. Ulmer

Previous studies have revealed that the estimated probability of galaxy-galaxy strong lensing in observed galaxy clusters exceeds the expectations from the $\Lambda$ Cold Dark Matter cosmological model by one order of magnitude. We aim to…

The diffuse Galactic gamma-ray emission is produced by cosmic rays (CRs) interacting with the interstellar gas and radiation field. Measurements by the Energetic Gamma-Ray Experiment Telescope (EGRET) instrument on the Compton Gamma-Ray…

High Energy Astrophysical Phenomena · Physics 2019-08-13 T. A. Porter

The nearby Large Magellanic Cloud (LMC) provides a rare opportunity of a spatially resolved view of an external star-forming galaxy in gamma-rays. The LMC was detected at 0.1-100GeV as an extended source with CGRO/EGRET and using early…

High Energy Astrophysical Phenomena · Physics 2015-11-09 LAT Collaboration

Cosmological simulations suggest that most of the matter in the Universe is distributed along filaments connecting galaxies. Illuminated by the cosmic UV background (UVB), these structures are expected to glow in fluorescent Lyman alpha…

We perform a composite likelihood analysis of subdivided regions within the central $26^\circ\times20^\circ$ of the Milky Way, with the aim of characterizing the spectrum of the gamma-ray galactic center excess in regions of varying…

High Energy Astrophysical Phenomena · Physics 2018-01-30 Shunsaku Horiuchi , Manoj Kaplinghat , Anna Kwa

This document presents recent results from the ATLAS and CMS experiments at the CERN Large Hadron Collider (LHC) on supersymmetry (SUSY) searches. These searches provide results with some non-conventional SUSY search assumptions such as…

High Energy Physics - Experiment · Physics 2025-06-10 Hyejin Kwon

Reliable identification of the origin of the high-energy non-thermal emission from the Galactic Center (GC) is not achievable without adequate consideration of the ambient conditions such as the magnetic field configuration or gas…

Astrophysics of Galaxies · Physics 2019-09-19 Mehmet Guenduez , Julia Becker Tjus , Katia Ferrière , Ralf-Jürgen Dettmar , Dominik J. Bomans

Dark matter particles annihilating into Standard Model fermions may be able to explain the recent observation of a gamma-ray excess in the direction of the Galactic Center. Recently, a hidden photon model has been proposed to explain this…

High Energy Physics - Phenomenology · Physics 2015-06-04 Samuel D. McDermott

After a very successful startup of the LHC in 2010, the CMS experiment has already accumulated significantly more data in 2011. After the successful re-discovery of the Standard Model, the search for signs of new physics has already…

High Energy Physics - Phenomenology · Physics 2011-11-22 Altan Cakir

The increasing precision of Cosmic Microwave Background (CMB) observations has unveiled significant tensions between different datasets, notably between Planck and the Atacama Cosmology Telescope (ACT), as well as with the late-Universe…

Cosmology and Nongalactic Astrophysics · Physics 2025-04-02 Matteo Forconi , Eleonora DI Valentino

The ATLAS collaboration reported a 3sigma excess in the search of events containing on-Z dilepton, jets, and large missing momentum (MET) in the 8 TeV LHC run. Motivated by this excess, many models of new physics have been proposed.…

High Energy Physics - Phenomenology · Physics 2016-05-23 Xiaochuan Lu , Satoshi Shirai , Takahiro Terada

The Fermi Gamma-Ray Space Telescope has provided evidence for diffuse gamma-ray emission in the central parts of the Milky Way and the Andromeda galaxy. This excess has been interpreted either as dark matter annihilation emission or as…

High Energy Astrophysical Phenomena · Physics 2019-01-30 Giacomo Fragione , Fabio Antonini , Oleg Y. Gnedin