I will present a brief overview of TRIUMF's accelerator complex, focusing particularly on the ARIEL facility and its high-power electron accelerator: the e-linac. I will detail its design parameters, review the current performance of the machine, and show how the DarkLight experiment could be integrated into our beamlines.
In the first part the talk rationalizes the SRF photoinjector design of the bERLinPRo/SEALab facility at HZB. A brief history ending at the current status of the experiments is given. The talk concludes then with scientific opportunities currently under consideration for beam applications.
A rather puzzling anomaly has been recently observed in the emission of electron-positron pairs in the 7Li(p,e+e-)8Be and 3H(p,e+e-)4He reactions [1,2]. This anomaly has been interpreted as the signature of a particle not foreseen in the standard model of particle physics (hereafter X17 boson) with mass M=16.8 MeV. The X17 boson could be a mediator of a fifth force, characterized by a strong...
The dark photon could mediate interactions between dark matter particles, and, through its kinetic mixing with the standard model photon, interact with standard model particles. I will review recent results on accelerator-based searches for dark photons decaying visibly to standard model particles, or invisibly to dark matter. I will also briefly discuss projected sensitivities from current...
Lepton universality (LU) typically refers to the lepton coupling,
which is considered to be the same for e and mu if the interaction is
electroweak according to the Standard Model, and it is hence a compelling
probe for New Physics.
The same principle of universal electroweak lepton interaction leads
to the expectation that lepton scattering yields are equal for e and mu
under the same...
The severity of the experimental limits on proton decay does not preclude the appearance of processes that break baryon number by two units at an appreciable rate, and their experimental signatures in low-energy experiments are so striking as to be ``background free.'' I will consider the connections between various such processes and their implications, noting, e.g., that the observation of...
An overview of searches for violation of lepton flavor universality will be presented with focus on low energy precision probes using pions, kaons, tau leptons, and beta decays related through unitarity tests of the CKM quark mixing matrix. The current status and future prospects including the new PIONEER rare pion decay experiment will be discussed.
Four types of recent and ongoing experiments will be described: Resonances near threshold in the 10Be+proton system, search for dark decay in 11B and 6He (ongoing), the
pair creation in the 7Li+p and the X17 boson (ongoing), and multi-particle decay near threshold.
After more than five decades of experimental effort the rate of 𝛼 on 12C radiative capture at astrophysical energies (𝐸𝑐𝑚 ~ 0.3 MeV above threshold) is not determined with desired precision and it is a cause of the largest uncertainty contribution in modeling of evolution of massive stars and underlying nucleosynthesis. By using the windowless gas jet target and modern energy-recovery linear...
