Zobrazeno 1 - 10
of 145
pro vyhledávání: '"Gilad Perez"'
Publikováno v:
Journal of High Energy Physics, Vol 2024, Iss 8, Pp 1-27 (2024)
Abstract We consider an effective theory for a shift-symmetric, quadratically-coupled, ultralight spin-0 field. The leading CP conserving interactions with Standard Model fields in the effective theory arise at dimension 8. We discuss the renormaliza
Externí odkaz:
https://doaj.org/article/969ee2f454f645ffb25bd4d232253174
Publikováno v:
Physics Letters B, Vol 851, Iss , Pp 138583- (2024)
Dilatons are pseudo-Nambu-Goldstone bosons arising from the breaking of conformal invariance. In this letter we point out that in general a dilaton mass has a power-law dependence on a small parameter related to the explicit breaking of conformal inv
Externí odkaz:
https://doaj.org/article/5132408c509148ada6c20a5ed3efccc9
Publikováno v:
Journal of High Energy Physics, Vol 2023, Iss 10, Pp 1-62 (2023)
Abstract We discuss models of ultralight scalar Dark Matter (DM) with linear and quadratic couplings to the Standard Model (SM). In addition to studying the phenomenology of linear and quadratic interactions separately, we examine their interplay. We
Externí odkaz:
https://doaj.org/article/8f9838228243407fbe070003258133b1
Publikováno v:
Journal of High Energy Physics, Vol 2023, Iss 3, Pp 1-16 (2023)
Abstract If Ultra-light dark matter (ULDM) exists and couples to neutrinos, the neutrino oscillation probability might be significantly altered by a parametric resonance. This resonance can occur if the typical frequency of neutrino flavor-oscillatio
Externí odkaz:
https://doaj.org/article/8080646fe3c349e1954aca2f7accf242
Publikováno v:
Journal of High Energy Physics, Vol 2022, Iss 5, Pp 1-19 (2022)
Abstract We investigate the phenomenological implications of the recent W mass measurement by the CDF collaboration, which exhibits tension with the standard model (SM) electroweak fit. Performing the fit to the electroweak observables within the SM
Externí odkaz:
https://doaj.org/article/7ed879288d904062809cc0f5fa3894a0
Publikováno v:
Journal of High Energy Physics, Vol 2022, Iss 4, Pp 1-30 (2022)
Abstract If ultra-light dark matter (ULDM) exists and couples to neutrinos, it can be discovered via time-periodic variations in the neutrino mass and mixing parameters. We analyze the current bounds on such a scenario and establish the sensitivity e
Externí odkaz:
https://doaj.org/article/e7b870bcf0c840619ed8c7f8ab926d10
Publikováno v:
Journal of High Energy Physics, Vol 2021, Iss 10, Pp 1-29 (2021)
Abstract In this paper we study CP violation in photon self-interactions at low energy. These interactions, mediated by the effective operator FFF F ˜ $$ FFF\tilde{F} $$ , where ( F ˜ $$ \tilde{F} $$ ) F is the (dual) electromagnetic field strength
Externí odkaz:
https://doaj.org/article/545aa3b74a7b4f1f8792e7c24b1952c4
Autor:
Gilad Perez, Aviv Shalit
Publikováno v:
Journal of High Energy Physics, Vol 2021, Iss 2, Pp 1-27 (2021)
Abstract We discuss composite UV completions of the Nelson-Barr(NB) solution to the strong CP problem. In our construction, the CP symmetry is broken spontaneously by the dynamics of a hidden QCD at θ = π. We focus on the minimal implementation of
Externí odkaz:
https://doaj.org/article/204982351f2c4bccb762982a4aa6f471
Autor:
Abhishek Banerjee, Dmitry Budker, Joshua Eby, Victor V. Flambaum, Hyungjin Kim, Oleksii Matsedonskyi, Gilad Perez
Publikováno v:
Journal of High Energy Physics, Vol 2020, Iss 9, Pp 1-26 (2020)
Abstract We discuss the sensitivity of the present and near-future axion dark matter experiments to a halo of axions or axion-like particles gravitationally bound to the Earth or the Sun. Such halos, assuming they are formed, can be searched for in a
Externí odkaz:
https://doaj.org/article/4a01b09ebb964edb9aeab530dca18fd2
Publikováno v:
Journal of High Energy Physics, Vol 2020, Iss 8, Pp 1-44 (2020)
Abstract The two kaon factories, KOTO and NA62, are at the cutting edge of the intensity frontier, with an unprecedented numbers of long lived and charged Kaons, ∼ 1013, being measured and analyzed. These experiments have currently a unique opportu
Externí odkaz:
https://doaj.org/article/c608fb9da6cb4002ab75886d8fc8e34d