Results 21 to 30 of about 2,508,669 (275)

The anatomy of Z ′ and Z with flavour changing neutral currents in the flavour precision era [PDF]

open access: yesJournal of High Energy Physics, 2013
82 pages, 34 figures; new results from LHCb taken into account, references added, conclusions unchanged; v3: two tables in Summary added, accepted for publication in ...
Andrzej J. Buras   +2 more
openaire   +2 more sources

Performance of the NA62 trigger system

open access: yesJournal of High Energy Physics, 2023
The NA62 experiment at CERN targets the measurement of the ultra-rare K + → π + ν ν ¯ $$ {K}^{+}\to {\pi}^{+}\nu \overline{\nu} $$ decay, and carries out a broad physics programme that includes probes for symmetry violations and searches for exotic ...
The NA62 collaboration   +209 more
doaj   +1 more source

Flavour changing neutral current effects from flavour dependent supergravity couplings [PDF]

open access: yesNuclear Physics B, 1995
27 pages PlainTeX, 3 eps figures.
Brax, Ph., Savoy, C. A.
openaire   +2 more sources

Maximal flavour violation: a Cabibbo mechanism for leptoquarks

open access: yesJournal of High Energy Physics, 2018
We propose a mechanism that allows for sizeable flavour violation in quark-lepton currents, while suppressing flavour changing neutral currents in quark-quark and lepton-lepton sectors.
Luca Di Luzio   +4 more
doaj   +1 more source

Flavour changing neutral currents and axions [PDF]

open access: yes, 2022
In this work we analyze the signals of axion-like particles (ALPs) in flavour changing neutral currents processes. We adopt an effective field theory approach to parametrize ALP couplings to the electroweak bosonic sector and ALP contribution to FCNC ...
Nava, Jacopo
core  

FCNC-free multi-Higgs-doublet models from broken family symmetries

open access: yesPhysics Letters B, 2020
We demonstrate how residual flavour symmetries, infrared signatures of symmetry breaking in complete models of flavour, can naturally forbid (or limit in a flavour specific way) flavour-changing neutral currents (FCNC) in multi-Higgs-doublet models (MHDM)
Ivo de Medeiros Varzielas, Jim Talbert
doaj   +1 more source

Symmetry constrained two Higgs doublet models

open access: yesEuropean Physical Journal C: Particles and Fields, 2018
We study two-Higgs-doublet models (2HDM) where Abelian symmetries have been introduced, leading to a drastic reduction in the number of free parameters in the 2HDM.
João M. Alves   +5 more
doaj   +1 more source

Searches for 25 rare and forbidden decays of D + and D s + $$ {D}_s^{+} $$ mesons

open access: yesJournal of High Energy Physics, 2021
A search is performed for rare and forbidden charm decays of the form D s + → h ± ℓ + ℓ ′ ∓ $$ {D}_{(s)}^{+}\to {h}^{\pm }{\mathrm{\ell}}^{+}{\mathrm{\ell}}^{\left(\prime \right)\mp } $$ , where h ± is a pion or kaon and ℓ (′)± is an electron or muon ...
The LHCb collaboration   +1007 more
doaj   +1 more source

Search for flavour-changing neutral current interactions of the top quark and the Higgs boson in events with a pair of τ-leptons in pp collisions at s $$ \sqrt{s} $$ = 13 TeV with the ATLAS detector

open access: yesJournal of High Energy Physics, 2023
A search for flavour-changing neutral current (FCNC) tqH interactions involving a top quark, another up-type quark (q = u, c), and a Standard Model (SM) Higgs boson decaying into a τ-lepton pair (H → τ + τ − ) is presented.
The ATLAS collaboration   +2904 more
doaj   +1 more source

Implications of b → sμμ anomalies for future measurements of B→K(⁎)νν¯ and K→πνν¯

open access: yesPhysics Letters B, 2020
We investigate the consequences of deviations from the Standard Model observed in b→sμμ transitions for flavour-changing neutral-current processes involving down-type quarks and neutrinos.
Sébastien Descotes-Genon   +3 more
doaj   +1 more source

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