Zobrazeno 1 - 10
of 121
pro vyhledávání: '"Joaquim Matias"'
Publikováno v:
Journal of High Energy Physics, Vol 2024, Iss 8, Pp 1-39 (2024)
Abstract We study the penguin-mediated B ¯ d s → K ¯ ∗ 0 K ∗ 0 ϕ $$ {\overline{B}}_{d(s)}\to {\overline{K}}^{\ast 0}\left({K}^{\ast 0}\right)\phi $$ transitions, proposing a new optimised observable L K*ϕ from the ratio of longitudinal bran
Externí odkaz:
https://doaj.org/article/60bd64eeb3854845abd378d9c7c988a8
Publikováno v:
Journal of High Energy Physics, Vol 2023, Iss 9, Pp 1-30 (2023)
Abstract We present a model based on S 1 scalar leptoquarks to solve the tension observed in the recently proposed non-leptonic optimized observables L K ∗ K ¯ ∗ $$ {L}_{K^{\ast }{\overline{K}}^{\ast }} $$ and L K K ¯ $$ {L}_{K\overline{K}} $$
Externí odkaz:
https://doaj.org/article/30b78c4b6854485793076a83303c2daa
Autor:
Marcel Algueró, Aritra Biswas, Bernat Capdevila, Sébastien Descotes-Genon, Joaquim Matias, Martin Novoa-Brunet
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 83, Iss 7, Pp 1-25 (2023)
Abstract We discuss the impact of the recent LHCb update on the two lepton-flavour universality ratios $$R_K$$ R K and $$R_{K^*}$$ R K ∗ , and the CMS update of $$B({B_s \rightarrow \mu ^+\mu ^-})$$ B ( B s → μ + μ - ) regarding the possibility
Externí odkaz:
https://doaj.org/article/dcca505059d840f892c8efeef5cf4005
Publikováno v:
Journal of High Energy Physics, Vol 2023, Iss 6, Pp 1-48 (2023)
Abstract We build a set of new observables using closely related non-leptonic penguin-mediated B d and B s decays: B ¯ d , s → K ∗ 0 K ¯ ∗ 0 , B ¯ d , s → K 0 K ¯ 0 , B ¯ d , s → K 0 K ¯ ∗ 0 $$ {\overline{B}}_{d,s}\to {K}^{\ast 0}{\
Externí odkaz:
https://doaj.org/article/765569a10466408c8292761568563a5d
Autor:
Marcel Algueró, Bernat Capdevila, Sébastien Descotes-Genon, Joaquim Matias, Martín Novoa-Brunet
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 82, Iss 4, Pp 1-16 (2022)
Abstract We present an up-to-date complete model-independent global fit to $$b\rightarrow s\ell \ell $$ b → s ℓ ℓ observables that confirms patterns of New Physics able to explain the data. We include the recent LHCb measurements of $$R_K$$ R K
Externí odkaz:
https://doaj.org/article/bfac3ee281544c4b8c548c3d5ecc7e9a
Autor:
Marcel Algueró, Paula Alvarez Cartelle, Alexander Mclean Marshall, Pere Masjuan, Joaquim Matias, Michael Andrew McCann, Mitesh Patel, Konstantinos A. Petridis, Mark Smith
Publikováno v:
Journal of High Energy Physics, Vol 2021, Iss 12, Pp 1-50 (2021)
Abstract In this paper we present a detailed study of the four-body decay B 0 → K + π − ℓ + ℓ − , where tensions with the Standard Model predictions have been observed. Our analysis of the decay with P- and S-wave contributions to the K +
Externí odkaz:
https://doaj.org/article/4fca93f0623e4f86b2a6b69d062348b4
Autor:
Marcel Algueró, Andreas Crivellin, Sébastien Descotes-Genon, Joaquim Matias, Martín Novoa-Brunet
Publikováno v:
Journal of High Energy Physics, Vol 2021, Iss 4, Pp 1-26 (2021)
Abstract In the context of the recently measured non-leptonic decays B d → K ∗ 0 K ¯ ∗ 0 $$ {K}^{\ast 0}{\overline{K}}^{\ast 0} $$ and B s → K ∗ 0 K ¯ ∗ 0 $$ {K}^{\ast 0}{\overline{K}}^{\ast 0} $$ we analyse the anatomy of the L VV obse
Externí odkaz:
https://doaj.org/article/782fb0419e214366a6f637809153b22b
Publikováno v:
Journal of High Energy Physics, Vol 2020, Iss 6, Pp 1-41 (2020)
Abstract We apply the formalism of amplitude symmetries to the angular distribution of the decays B → D ∗ ℓν for ℓ = e, μ, τ . We show that the angular observables used to describe the distribution of this class of decays are not independe
Externí odkaz:
https://doaj.org/article/fec08f11a1f342f6b9a60dd40a2bbeb4
Autor:
Marcel Algueró, Bernat Capdevila, Andreas Crivellin, Sébastien Descotes-Genon, Pere Masjuan, Joaquim Matias, Martín Novoa-Brunet, Javier Virto
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 80, Iss 6, Pp 1-10 (2020)
Abstract This paper is an addendum to Ref. Eur. Phys. J. C79 (2019) no. 8, 714 that supersedes all results (Tables and Figures) in that paper after including the new data on the $$B\rightarrow K^*\mu \mu $$ B→K∗μμ angular distribution released
Externí odkaz:
https://doaj.org/article/a5afd13fe752477b983d4d7e308d0e6b
Autor:
Marcel Algueró, Bernat Capdevila, Andreas Crivellin, Sébastien Descotes-Genon, Pere Masjuan, Joaquim Matias, Javier Virto
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 79, Iss 8, Pp 1-10 (2019)
Abstract We perform a model-independent global fit to $$b\rightarrow s\ell ^+\ell ^-$$ b→sℓ+ℓ- observables to confirm existing New Physics (NP) patterns (or scenarios) and to identify new ones emerging from the inclusion of the updated LHCb and
Externí odkaz:
https://doaj.org/article/ea620e35ce3e4c7e87093216a45c06fb