Results 11 to 20 of about 1,892 (214)

Flavour physics and extra-dimensions

open access: yesEPJ Web of Conferences, 2018
Randall-Sundrum (RS) model of warped extra-dimensions were originally proposed to explain the Planck-weak scale hierarchy. It was soon realised that modifications of the original setup, by introducing the fields in the bulk, has several interesting ...
Iyer Abhishek M.
doaj   +1 more source

Leptoquarks in Flavour Physics

open access: yesEPJ Web of Conferences, 2018
While the LHC has not directly observed any new particle so far, experimental results from LHCb, BELLE and BABAR point towards the violation of lepton flavour universality in b ⟶ sℓ+ and b ⟶ c-ℓν.
Müller Dario
doaj   +1 more source

Search for Charged Lepton Flavour Violation at CMS

open access: yesEPJ Web of Conferences, 2018
Lepton flavour is a conserved quantity in the standard model of particle physics, but it does not follow from an underlying gauge symmetry. After the discovery of neutrino oscillation, it has been established that lepton flavour is not conserved in the ...
Mukherjee Swagata
doaj   +1 more source

Anomalies in the heavy sector [PDF]

open access: yesEPJ Web of Conferences, 2022
Heavy flavour physics is well described by the Standard Model with the exception of some measurements which could be signalling new physics. We briefly review status and prospects of R(K) and R(D(*)) anomalies and also address the issue of the long ...
Ricciardi Giulia
doaj   +1 more source

Flavour Violating Axions [PDF]

open access: yesEPJ Web of Conferences, 2020
I review the physics case for flavour violating axions. In particular, I argue that relaxing the assumption of the universality of the Peccei-Quinn current opens up new pathways, including: the relaxation of the Supernova bound on the axion mass, a ...
Di Luzio Luca
doaj   +1 more source

Searching for BSM physics in Yukawa couplings and flavour symmetries

open access: yesJournal of High Energy Physics, 2022
In the framework of the Standard Model Effective Field Theory, we compare the lower bounds on the scale of new physics possibly contributing to the f f ¯ h $$ f\overline{f}h $$ effective couplings, obtained from the measurements of different observables,
J. Alonso-González   +3 more
doaj   +1 more source

New Physics searches in heavy flavours in ATLAS

open access: yesEPJ Web of Conferences, 2013
Precision determinations of the flavour sector allow the search for indirect new physics signatures. At the forefront of these studies are the determinations of interference of new physics with known ΔF = 1 and ΔF = 2 processes.
Leontsinis Stefanos
doaj   +1 more source

Flavourful SMEFT likelihood for Higgs and electroweak data

open access: yesJournal of High Energy Physics, 2020
We perform an updated fit to LHC Higgs data and LEP electroweak precision tests in the framework of the Standard Model Effective Field Theory (SMEFT). We assume a generic structure of the SMEFT operators without imposing any flavour symmetries.
Adam Falkowski, David Straub
doaj   +1 more source

Calibration of the light-flavour jet mistagging efficiency of the b-tagging algorithms with Z+jets events using 139  $$\textrm{fb}^{-1}$$ fb - 1 of ATLAS proton–proton collision data at $$\sqrt{s} = 13$$ s = 13  TeV

open access: yesEuropean Physical Journal C: Particles and Fields, 2023
The identification of b-jets, referred to as b-tagging, is an important part of many physics analyses in the ATLAS experiment at the Large Hadron Collider and an accurate calibration of its performance is essential for high-quality physics results.
G. Aad   +2931 more
doaj   +1 more source

B decay anomalies at LHCb

open access: yesEPJ Web of Conferences, 2018
The LHCb collaboration has provided a plethora of precise measurements of flavour observables in the last years. In the B meson sector some of these results show consistent deviations from Standard Model predictions with a clear tendency to specific New ...
Oyanguren Arantza
doaj   +1 more source

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