Zobrazeno 1 - 10
of 691
pro vyhledávání: '"L. Merlo"'
Publikováno v:
Journal of High Energy Physics, Vol 2023, Iss 2, Pp 1-51 (2023)
Abstract The neutral anomalies in B decays are analysed in terms of the tree-level exchange of an axion-like-particle (ALP), within the effective field theory framework. The complete two-dimensional parameter space for ALP couplings to electrons and
Externí odkaz:
https://doaj.org/article/6b136ebe8d54455b8a5ea10ab13dfe06
Publikováno v:
Journal of High Energy Physics, Vol 2022, Iss 5, Pp 1-34 (2022)
Abstract In the framework of the Standard Model Effective Field Theory, we compare the lower bounds on the scale of new physics possibly contributing to the f f ¯ h $$ f\overline{f}h $$ effective couplings, obtained from the measurements of differen
Externí odkaz:
https://doaj.org/article/2683cbd5f86c422098775acaf173d39f
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 81, Iss 6, Pp 1-19 (2021)
Abstract The Minimal Linear $$\sigma $$ σ Model is a useful theoretical laboratory. One can investigate in a perturbative renormalisable model the properties of the Higgs boson as a pseudo-Goldstone boson, the phenomenological effects of the radial
Externí odkaz:
https://doaj.org/article/05472e1cb9904d0e9514068615542020
Publikováno v:
Journal of High Energy Physics, Vol 2021, Iss 6, Pp 1-12 (2021)
Abstract The origin of the matter-antimatter asymmetry in the Universe is a fundamental question of physics. Electroweak baryogenesis is a compelling scenario for explaining it but it requires beyond the Standard Model sources of the CP symmetry viol
Externí odkaz:
https://doaj.org/article/596a1c5aa236457f9ee5370f55da0dce
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 80, Iss 9, Pp 1-23 (2020)
Abstract A bottom-up approach has been adopted to identify a flavour model that agrees with present experimental measurements. The charged fermion mass hierarchies suggest that only the top Yukawa term should be present at the renormalisable level. S
Externí odkaz:
https://doaj.org/article/cf0ac04e8c1a4be2a22ef8715c960559
Publikováno v:
Journal of High Energy Physics, Vol 2019, Iss 7, Pp 1-25 (2019)
Abstract Vector boson scatterings are fundamental processes to shed light on the nature of the electroweak symmetry breaking mechanism. Deviations from the Standard Model predictions on the corresponding observables can be interpreted in terms of eff
Externí odkaz:
https://doaj.org/article/12de989a0d3540818b28aa0b85d4b242
Publikováno v:
Journal of High Energy Physics, Vol 2019, Iss 6, Pp 1-17 (2019)
Abstract In this paper, the production of Axion-Like Particles (ALPs) at B-factories via the process e + e − → γa is revisited. To this purpose, the relevant cross-section is computed via an effective Lagrangian with simultaneous ALP couplings t
Externí odkaz:
https://doaj.org/article/21449544172748f29df951721825fb76
Publikováno v:
Nuclear Physics B, Vol 950, Iss , Pp - (2020)
Axion and axion-like particle models are typically affected by a strong fine-tuning problem in conceiving the electroweak and the Peccei-Quinn breaking scales. Within the context of the Minimal Linear σ Model, axion-like particle constructions are i
Externí odkaz:
https://doaj.org/article/e4a82d31b1824f7f99b6fc591ba8529c
Autor:
L. Merlo, S. Rosauro-Alcaraz
Publikováno v:
Journal of High Energy Physics, Vol 2018, Iss 7, Pp 1-35 (2018)
Abstract A predictive Leptogenesis scenario is presented based on the Minimal Lepton Flavour Violation symmetry. In the realisation with three right-handed neutrinos transforming under the same flavour symmetry of the lepton electroweak doublets, lep
Externí odkaz:
https://doaj.org/article/c3677d68dad84d10875efaf8535ec670
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 78, Iss 5, Pp 1-23 (2018)
Abstract The minimal SO(5) / SO(4) linear $$\sigma $$ σ model is extended including an additional complex scalar field, singlet under the global SO(5) and the Standard Model gauge symmetries. The presence of this scalar field creates the conditions
Externí odkaz:
https://doaj.org/article/0b51822d5d81416ca08538ddd793b67e