Conveners
BSM XII
- Seth Koren
Sterile neutrinos can be produced through mixing with active neutrinos in the hot and dense core of a collapsing supernova (SN). The standard SN bounds on the active-sterile mixing ($\theta$) arise from the SN1987A energy-loss argument. In this talk, I will discuss a novel and stringent bound on $\theta$ arising from the energy deposition through the decays of sterile neutrinos inside the SN envelope.
Pulsar binaries can be used for robust probes of new physics. There are two main reasons for this. First, there exists an abundance of high precision experimental data on orbital period decays of pulsar binaries. Second, pulsars are extreme astrophysical objects for which BSM effects can be significantly enhanced by large particle number densities. In my talk, I will discuss the use of pulsar...
The nuclear processes within the sun could lead to the production of Beyond the Standard Model (BSM) particles of MeV scale. If these particles are long-lived, they could escape from the Sun and decay into observable particles en route to the Earth.
We use data available from the RHESSI Spectrometer to explore scenarios involving these solar long-lived particles. In particular, we...
We provide a comprehensive analysis of constraints on Supersymmetric gravitinos and axinos originating from spectral distortion, BBN and Lyman-alpha considerations. We analyze the current status and future prospects of such scenarios from cosmological probes. Furthermore, we provide the complementary constraints from collider data and assess the future discovery prospects.
Ultralight dark-photon dark matter coupled to the Standard Model (through e.g. $B$ or $B−L$ charges) would supply a new force that oscillates with a frequency set by the dark photon mass. Such forces result in fluctuations in the separation between inertial test masses, a physical quantity tracked in many gravitational-wave (GW) detectors. A recent GW detection proposal based on monitoring the...
Well-motivated scenarios of thermally-produced dark matter often result in a population of electrons and positrons within galaxies produced through dark matter annihilation -- often in association with high-energy gamma rays. As they diffuse through galactic magnetic fields, these $e^\pm$ produce synchrotron radio emission. The intensity and morphology of this signal depends on the properties...
