Zobrazeno 1 - 10
of 190
pro vyhledávání: '"Fraser, Katherine"'
Publikováno v:
JHEP 05 (2024) 079
Massless chiral excitations can arise from the interactions between a fermion and an axion string, propagating along the string and allowing it to superconduct. The properties of these excitations, or zero modes, dictate how the string interacts with
Externí odkaz:
http://arxiv.org/abs/2310.01476
When the Froggatt-Nielsen mechanism is used to explain the Standard Model flavor hierarchy, new physics couplings are also determined by the horizontal symmetry. However, additional symmetries or dynamics in the UV can sometimes lead to a departure f
Externí odkaz:
http://arxiv.org/abs/2308.01340
The CDF collaboration recently reported a new precise measurement of the $W$ boson mass $M_W$ with a central value significantly larger than the SM prediction. We explore the effects of including this new measurement on a fit of the Standard Model (S
Externí odkaz:
http://arxiv.org/abs/2204.05283
Autor:
Fraser, Katherine, Homiller, Samuel, Mishra, Rashmish K., Ostdiek, Bryan, Schwartz, Matthew D.
Anomaly detection relies on designing a score to determine whether a particular event is uncharacteristic of a given background distribution. One way to define a score is to use autoencoders, which rely on the ability to reconstruct certain types of
Externí odkaz:
http://arxiv.org/abs/2110.06948
Publikováno v:
Phys. Rev. Lett. 127, 131602 (2021)
We show that axions interacting with abelian gauge fields obtain a potential from loops of magnetic monopoles. This is a consequence of the Witten effect: the axion field causes the monopoles to acquire an electric charge and alters their energy spec
Externí odkaz:
http://arxiv.org/abs/2105.09950
Autor:
Flesher, Forrest, Fraser, Katherine, Hutchison, Charles, Ostdiek, Bryan, Schwartz, Matthew D.
One of the key tasks of any particle collider is measurement. In practice, this is often done by fitting data to a simulation, which depends on many parameters. Sometimes, when the effects of varying different parameters are highly correlated, a larg
Externí odkaz:
http://arxiv.org/abs/2011.04666
Publikováno v:
JHEP03(2021)123
A statistically significant excess of gamma rays has been reported and robustly confirmed in the Galactic Center over the past decade. Large local dark matter densities suggest that this Galactic Center Excess (GCE) may be attributable to new physics
Externí odkaz:
http://arxiv.org/abs/2010.15129
Autor:
Fraser, Katherine, Reece, Matthew
Publikováno v:
JHEP05 (2020) 066
Mixing of axion fields is widely used to generate EFTs with phenomenologically advantageous features, such as hierarchies between axion couplings to different gauge fields and/or large effective field ranges. While these features are strongly constra
Externí odkaz:
http://arxiv.org/abs/1910.11349
Publikováno v:
JHEP10 (2018) 093
Modern machine learning techniques, such as convolutional, recurrent and recursive neural networks, have shown promise for jet substructure at the Large Hadron Collider. For example, they have demonstrated effectiveness at boosted top or W boson iden
Externí odkaz:
http://arxiv.org/abs/1803.08066