Interpreting hints for lepton flavor universality violation
Sign Up to like & getrecommendations! Published in 2017 at "Physical Review D"
DOI: 10.1103/physrevd.96.055008
Abstract: We interpret the recent hints for lepton flavor universality violation in rare $B$ meson decays. Based on a model-independent effective Hamiltonian approach, we determine regions of new physics parameter space that give a good description… read more here.
Keywords: lepton flavor; universality violation; physics; flavor universality ... See more keywords
Analyzing lepton flavor universality in the decays Λ b →Λ c (*) (1/2 ± ,3/2 - ) +ℓν ̄ ℓ
Sign Up to like & getrecommendations! Published in 2018 at "Physical Review D"
DOI: 10.1103/physrevd.98.053003
Abstract: Lepton flavor universality can be tested in the semileptonic decays $\Lambda_b\to \Lambda_c^{(\ast)}$ where $\Lambda_c^{(\ast)}$ denotes either the ground state $\Lambda_c(2286)$ (with $J^P=1/2^+$) or its orbital excitations $\Lambda_c(2595)$ (with $J^P=1/2^-$) and $\Lambda_c(2625)$ (with $J^P=3/2^-$). We calculate… read more here.
Keywords: lepton flavor; universality decays; flavor universality; analyzing lepton ... See more keywords
Lepton flavor universality violation in semileptonic tree level weak transitions
Sign Up to like & getrecommendations! Published in 2019 at "Physical Review D"
DOI: 10.1103/physrevd.99.113004
Abstract: The recent deviations of the experimental data on some parameters of the tree-level semileptonic B and Bc mesons decays from the standard model (SM) predictions indicate considerable violations of the lepton flavor universality, and as… read more here.
Keywords: tree level; flavor universality; level; lepton flavor ... See more keywords
Revisiting Lepton Flavor Universality in B Decays.
Sign Up to like & getrecommendations! Published in 2017 at "Physical review letters"
DOI: 10.1103/physrevlett.118.011801
Abstract: Lepton flavor universality (LFU) in B decays is revisited by considering a class of semileptonic operators defined at a scale Λ above the electroweak scale v. The importance of quantum effects, so far neglected in… read more here.
Keywords: revisiting lepton; universality decays; lepton flavor; flavor ... See more keywords
A 331 Model for Lepton Flavor Universality Violation in B Decays
Sign Up to like & getrecommendations! Published in 2021 at "International Journal of Modern Physics A"
DOI: 10.1142/s0217751x22500051
Abstract: Lepton Flavor Universality Violation (LFUV) in B decays in both neutral b → sl+l− and charged b → clν̄l processes observed in the ratios RK(∗) and RD(∗) is investigated in the framework of a model… read more here.
Keywords: flavor; lepton flavor; model; flavor universality ... See more keywords
A Light Shed on Lepton Flavor Universality in B Decays
Sign Up to like & getrecommendations! Published in 2022 at "Universe"
DOI: 10.3390/universe9030129
Abstract: Behind succeeding measurements of anomalies in semileptonic decays at LHCb and several collider experiments hinting at the possible violation of lepton flavor universality, we undertake a concise review of theoretical foundations of the tree- and… read more here.
Keywords: shed lepton; physics; flavor universality; lepton flavor ... See more keywords