Zobrazeno 1 - 10
of 105
pro vyhledávání: '"Matthew Reece"'
Publikováno v:
Journal of High Energy Physics, Vol 2024, Iss 7, Pp 1-36 (2024)
Abstract It is difficult to construct a post-inflation QCD axion model that solves the axion quality problem (and hence the Strong CP problem) without introducing a cosmological disaster. In a post-inflation axion model, the axion field value is rand
Externí odkaz:
https://doaj.org/article/75d2cd028ad34a5cb2ae3ea2a624711b
Publikováno v:
Journal of High Energy Physics, Vol 2024, Iss 1, Pp 1-34 (2024)
Abstract Standard axion electrodynamics has two closely related features. First, the coupling of a massless axion field to photons is quantized, in units proportional to the electric gauge coupling squared. Second, the equations of motion tell us tha
Externí odkaz:
https://doaj.org/article/07143563ef014aad852f86fae91e47c2
Autor:
Matthew Reece
Publikováno v:
Journal of High Energy Physics, Vol 2023, Iss 10, Pp 1-20 (2023)
Abstract The possible couplings of an axion to gauge fields depend on the global structure of the gauge group. If the Standard Model gauge group is minimal, or equivalently if fractionally charged color-singlet particles are forbidden, then the QCD a
Externí odkaz:
https://doaj.org/article/13887aaa59374371bda8334ddf8ccee4
Publikováno v:
Journal of High Energy Physics, Vol 2023, Iss 1, Pp 1-34 (2023)
Abstract The chromo-natural inflation (CNI) scenario predicts a potentially detectable chiral gravitational wave signal, generated by a Chern-Simons coupling between a rolling scalar axion field and an SU(2) gauge field with an isotropy-preserving cl
Externí odkaz:
https://doaj.org/article/9baa0d2c140d4c34a7c9f6ed0f51b736
Publikováno v:
Journal of High Energy Physics, Vol 2022, Iss 7, Pp 1-41 (2022)
Abstract A muon collider would be a powerful probe of flavor violation in new physics. There is a strong complementary case for collider measurements and precision low-energy probes of lepton flavor violation (as well as CP violation). We illustrate
Externí odkaz:
https://doaj.org/article/e46f7a2df04040cba4ab74014460f434
Publikováno v:
Journal of High Energy Physics, Vol 2021, Iss 12, Pp 1-22 (2021)
Abstract Light scalar fields typically develop spatially varying backgrounds during inflation. Very often they do not directly affect the density perturbations, but interact with other fields that do leave nontrivial signals in primordial perturbatio
Externí odkaz:
https://doaj.org/article/54c169511a4b4109a788192e3d00532f
Publikováno v:
Journal of High Energy Physics, Vol 2021, Iss 11, Pp 1-24 (2021)
Abstract Strong (sublattice or tower) formulations of the Weak Gravity Conjecture (WGC) imply that, if a weakly coupled gauge theory exists, a tower of charged particles drives the theory to strong coupling at an ultraviolet scale well below the Plan
Externí odkaz:
https://doaj.org/article/fb9a069285dc4c9aa05ea90b84c95b80
Autor:
Ben Heidenreich, Jacob McNamara, Miguel Montero, Matthew Reece, Tom Rudelius, Irene Valenzuela
Publikováno v:
Journal of High Energy Physics, Vol 2021, Iss 11, Pp 1-76 (2021)
Abstract We draw attention to a class of generalized global symmetries, which we call “Chern-Weil global symmetries,” that arise ubiquitously in gauge theories. The Noether currents of these Chern-Weil global symmetries are given by wedge product
Externí odkaz:
https://doaj.org/article/175c60efb2b74b4c9d9844b33ab413a8
Publikováno v:
Journal of High Energy Physics, Vol 2021, Iss 10, Pp 1-21 (2021)
Abstract Hierarchical masses of quarks and leptons are addressed by imposing horizontal symmetries. In supersymmetric Standard Models, the same symmetries play a role in suppressing flavor violating processes induced by supersymmetric particles. Comb
Externí odkaz:
https://doaj.org/article/56050ba8dd67415d87c9d89b811f9d27
Publikováno v:
Journal of High Energy Physics, Vol 2021, Iss 9, Pp 1-42 (2021)
Abstract We study the contributions of supersymmetric models with a U(1) horizontal symmetry and only spontaneous CP breaking to various lepton flavor observables, such as μ → eγ and the electron electric dipole moment. We show that both a horizo
Externí odkaz:
https://doaj.org/article/883d18cab0564ad3ab28267221cabf18