Experience

Publications

• Search for long-lived neutral particles decaying into displaced lepton jets in proton--proton collisions at √s = 13 TeV with the ATLAS detector

  38th International Conference on High Energy Physics

  This note presents the results of a search for long-lived neutral particles decaying into collimated jets of light leptons and mesons, so-called "lepton-jets", using a sample of 3.4/fb of proton-proton collisions data at a centre-of-mass energy of √s=13TeV collected during 2015 with the ATLAS detector at the LHC.

• Search for long-lived neutral particles decaying into displaced lepton jets in proton--proton collisions at √s = 13 TeV with the ATLAS detector

  38th International Conference on High Energy Physics

  This note presents the results of a search for long-lived neutral particles decaying into collimated jets of light leptons and mesons, so-called "lepton-jets", using a sample of 3.4/fb of proton-proton collisions data at a centre-of-mass energy of √s=13TeV collected during 2015 with the ATLAS detector at the LHC.

• A Search for Astrophysical Burst Signals at the Sudbury Neutrino Observatory

  Astroparticle Physics

  The Sudbury Neutrino Observatory (SNO) has confirmed the standard solar model and neutrino oscillations through the observation of neutrinos from the solar core. In this paper we present a search for neutrinos associated with sources other than the solar core, such as gamma-ray bursters and solar flares. We present a new method for looking for temporal coincidences between neutrino events and astrophysical bursts of widely varying intensity. No correlations were found between neutrinos detected in SNO and such astrophysical sources.

• Search for long-lived neutral particles decaying into displaced lepton jets in proton--proton collisions at √s = 13 TeV with the ATLAS detector

  38th International Conference on High Energy Physics

  This note presents the results of a search for long-lived neutral particles decaying into collimated jets of light leptons and mesons, so-called "lepton-jets", using a sample of 3.4/fb of proton-proton collisions data at a centre-of-mass energy of √s=13TeV collected during 2015 with the ATLAS detector at the LHC.

• A Search for Astrophysical Burst Signals at the Sudbury Neutrino Observatory

  Astroparticle Physics

  The Sudbury Neutrino Observatory (SNO) has confirmed the standard solar model and neutrino oscillations through the observation of neutrinos from the solar core. In this paper we present a search for neutrinos associated with sources other than the solar core, such as gamma-ray bursters and solar flares. We present a new method for looking for temporal coincidences between neutrino events and astrophysical bursts of widely varying intensity. No correlations were found between neutrinos detected in SNO and such astrophysical sources.

• Searching for Light Dark Matter with the SLAC Millicharge Experiment

  Physical Review Letters

  New sub-GeV gauge forces ("dark photons") that kinetically mix with the photon provide a promising scenario for MeV-GeV dark matter, and are the subject of a program of searches at fixed-target and collider facilities around the world. In such models, dark photons produced in collisions may decay invisibly into dark matter states, thereby evading current searches. We re-examine results of the SLAC mQ electron beam dump experiment designed to search for millicharged particles, and find that it was strongly sensitive to any secondary beam of dark matter produced by electron-nucleus collisions in the target. The constraints are competitive for dark photon masses in the ~1-30 MeV range, covering part of the parameter space that can reconcile the apparent (g-2)_{\mu} anomaly. Simple adjustments to the original SLAC search for millicharges may extend sensitivity to cover a sizable portion of the remaining (g-2)_{\mu} anomaly-motivated region. The mQ sensitivity is therefore complementary to on-going searches for visible decays of dark photons. Compared to existing direct detection searches, mQ sensitivity to electron-dark matter scattering cross sections is more than an order of magnitude better for a significant range of masses and couplings in simple models.