Results 31 to 40 of about 2,508,669 (275)

Multi-Higgs-doublet models and singular alignment

open access: yesJournal of High Energy Physics, 2019
We consider a 4-Higgs-doublet model in which each Higgs doublet gives mass to one of the fermion sets {m t }, {m b , m τ , m c }, {m μ , m s }, and {m d , m u , m e }. The sets have the feature that within each of them the masses are similar.
Werner Rodejohann   +1 more
doaj   +1 more source

The impact of flavour data on global fits of the MFV SMEFT

open access: yesJournal of High Energy Physics, 2020
We investigate the information that can be gained by including flavour data in fits of the Standard Model Effective Field Theory (SMEFT) with the assumption of Minimal Flavour Violation (MFV), allowing — as initial conditions at the high scale — leading ...
Rafael Aoude   +3 more
doaj   +1 more source

An investigation of the very rare K + → π + ν ν ¯ $$ {K}^{+}\to {\pi}^{+}\nu \overline{\nu} $$ decay

open access: yesJournal of High Energy Physics, 2020
The NA62 experiment reports an investigation of the K + → π + ν ν ¯ $$ {K}^{+}\to {\pi}^{+}\nu \overline{\nu} $$ mode from a sample of K + decays collected in 2017 at the CERN SPS. The experiment has achieved a single event sensitivity of (0.389 ± 0.024)
The NA62 collaboration   +200 more
doaj   +1 more source

A measurement of the K + → π + μ + μ − decay

open access: yesJournal of High Energy Physics, 2022
A sample of 2.8 × 104 K + → π + μ + μ − candidates with negligible background was collected by the NA62 experiment at the CERN SPS in 2017–2018. The model-independent branching fraction is measured to be (9.15 ± 0.08) × 10 −8, a factor three more precise
The NA62 collaboration   +209 more
doaj   +1 more source

Heavy Higgs searches: flavour matters

open access: yesJournal of High Energy Physics, 2018
We point out that the stringent lower bounds on the masses of additional electrically neutral and charged Higgs bosons crucially depend on the flavour structure of their Yukawa interactions.
Stefania Gori   +3 more
doaj   +1 more source

Search for top quark decays t → qH with H → γγ using the ATLAS detector [PDF]

open access: yes, 2014
A search is performed for flavour-changing neutral currents in the decay of a top quark to an up-type (c, u) quark and a Higgs boson, where the Higgs boson decays to two photons.
G. Khoriauli   +999 more
core   +4 more sources

Search for flavour-changing neutral tqH interactions with H → γγ in pp collisions at s $$ \sqrt{s} $$ = 13 TeV using the ATLAS detector

open access: yesJournal of High Energy Physics, 2023
A search for flavour-changing neutral interactions involving the top quark, the Higgs boson and an up-type quark q (q = c, u) is presented. The proton-proton collision data set used, with an integrated luminosity of 139 fb −1, was collected at s $$ \sqrt{
The ATLAS collaboration   +2948 more
doaj   +1 more source

Long-distance QCD effects in FCNC B → γl+l- decays

open access: yesEPJ Web of Conferences, 2018
This presentation reviews the main results of our recent work [1] on rare radiative leptonic decays Bd,s → γμ+μ- and Bd,s → γe+e- induced by flavour-changing neutral currents (FCNC) in the Standard Model.
Kozachuk Anastasiia   +2 more
doaj   +1 more source

Charming loops in exclusive rare FCNC B-decays [PDF]

open access: yesEPJ Web of Conferences, 2019
Rare B-decays induced by flavour-changing neutral currents (FCNC) is one of the promising candidates for probing physics beyond the Standard model. However, for identifying potential new physics from the data, reliable control over QCD contributions is ...
Melikhov Dmitri
doaj   +1 more source

A search for flavour changing neutral currents in top-quark decays in pp collision data collected with the ATLAS detector at √s=7 TeV [PDF]

open access: yes, 2012
Contains fulltext : 103521.pdf (Publisher’s version ) (Open ...
G. Khoriauli   +999 more
core   +3 more sources

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