Results 121 to 130 of about 5,931 (207)

Semileptonic and leptonic B decays, circa 2016

open access: yes, 2017
We summarize the status of semileptonic and leptonic B decays, including |Vcb| and |Vub| exclusive and inclusive determinations, decays to excited states of the charm meson spectrum and decays into tau ...
RICCIARDI, GIULIA
core   +1 more source

D → Pℓ + ℓ − decays assisted by QCD light-cone sum rules

open access: yesJournal of High Energy Physics
We suggest a new method to analyse the rare D (s) → Pℓ + ℓ − decays (P = π, K), combining QCD light-cone sum rules (LCSR) with hadronic dispersion relations.
Anshika Bansal   +2 more
doaj   +1 more source

M W helps select Z ' models for b → s ℓ ℓ anomalies. [PDF]

open access: yesEur Phys J C Part Fields, 2022
Allanach B, Davighi J.
europepmc   +1 more source

$\Omega_b$ semi-leptonic weak decays

open access: yes, 2011
$\Omega_b \rightarrow \Omega_c^{(*)}$ semi-leptonic decays are studied in details. Relevant helicity amplitudes are written down. Both unpolarized and polarized $\Omega_b$ cases are considered. Decay angular distributions, asymmetry parameters and semileptonic decay rates are calculated, with numerical results using leading order results of the large ...
Du, Ming-Kai, Liu, Chun
openaire   +1 more source

Constraining anomalous Wtb and related SMEFT couplings using low-energy and electroweak precision observables

open access: yesJournal of High Energy Physics
We investigate constraints on couplings of Standard Model effective field theory (SMEFT) operators contributing to Wtb effective vertex at tree level. We study the one-loop level impact of these couplings on the low-energy flavour changing charged and ...
Subhajit Kala   +3 more
doaj   +1 more source

Search for heavy neutral leptons in decays of W bosons using leptonic and semi-leptonic displaced vertices in $\sqrt{s} = 13$ TeV $pp$ collisions with the ATLAS detector

open access: yes
A search is performed for long-lived heavy neutral leptons (HNLs), produced through the decay of a $W$ boson along with a muon or electron. Two channels are explored: a leptonic channel, in which the HNL decays into two leptons and a neutrino, and a semi-
Bamwidhi, Isaac   +499 more
core   +2 more sources

CP violation in decays into states with neutral kaons

open access: yesJournal of High Energy Physics
CP violation in the kaon system can manifest itself in decays to final states containing neutral kaons. The effect is governed by an efficiency function that reflects the specific experimental setup.
Yuval Grossman   +4 more
doaj   +1 more source

TeV-scale scalar leptoquarks motivated by B anomalies improve Yukawa unification in SO(10) GUT

open access: yesJournal of High Energy Physics
It is common practice to explain deviations between data and Standard-Model (SM) predictions by postulating new particles at the TeV scale ad-hoc. This approach becomes much more convincing, if one successfully embeds the postulated particles into a UV ...
Xiyuan Gao, Ulrich Nierste
doaj   +1 more source

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