Zobrazeno 1 - 10
of 1 834
pro vyhledávání: '"universality: violation"'
Autor:
Bhattacharya, Bhubanjyoti, Datta, Alakabha, Graverini, Elena, Mukherjee, Lopamudra, Sachdeva, Divya, Waite, John
In this work, we explore the effect of neutrino nonstandard interactions (NSI) involving the charm quark at SND@LHC. Using an effective description of new physics in terms of four-fermion operators involving a charm quark, we constrain the Wilson coe
Externí odkaz:
http://arxiv.org/abs/2408.11897
We study lepton flavour universality violation in SM boson decays in low-scale seesaw models of neutrino mass generation, also addressing other electroweak precision observables. We compute the electroweak next-to-leading order corrections, which tur
Externí odkaz:
http://arxiv.org/abs/2307.02558
We perform a detailed study of the $\text{b} \to \text{c} \tau \nu$ and $\text{b} \to \text{s} l^+ l^-$ processes in a minimal flipped 331 model based on the $SU(3)_C\times SU(3)_L\times U(1)_N$ gauge symmetry. The non universal $SU(3)_L \times U(1)_
Externí odkaz:
http://arxiv.org/abs/2304.03003
In this work we study the potential of the lepton flavor ratios $R_{K}^{\tau \mu} \equiv \Gamma(B \to K \tau^+ \tau^-)/ \Gamma(B \to K \mu^+ \mu^-)$ and $ R_{K^{*}}^{\tau \mu} \equiv \Gamma(B \to K^* \tau^+ \tau^-)/ \Gamma(B \to K^* \mu^+ \mu^-)$ to
Externí odkaz:
http://arxiv.org/abs/2303.16606
The LHCb collaboration has very recently released a new study of $B^+ \to K^{+} \ell^+ \ell^-$ and $B \to K^{*0} \ell^+ \ell^-$ ($\ell = e,\mu$) decays, testing lepton universality with unprecedented accuracy using the whole Run 1 and 2 dataset. In a
Externí odkaz:
http://arxiv.org/abs/2212.10516
Autor:
Abada, A.1 (AUTHOR), Kriewald, J.2 (AUTHOR) jonathan.kriewald@ijs.si, Pinsard, E.3 (AUTHOR), Rosauro-Alcaraz, S.1 (AUTHOR), Teixeira, A. M.3 (AUTHOR)
Publikováno v:
European Physical Journal C -- Particles & Fields. Feb2024, Vol. 84 Issue 2, p1-36. 36p.
Autor:
Guadagnoli, Diego, Koppenburg, Patrick
Two topics have recently risen to prominence within the ongoing searches of beyond-Standard Model effects in $b$ and $c$ decays: observables that test lepton flavor universality (LFU) as well as lepton flavor violation (LFV). A coherent set of measur
Externí odkaz:
http://arxiv.org/abs/2207.01851
Leptoquarks are prime candidates for explaining the intriguing hints for lepton flavour universality violation. In particular, the $SU(2)_L$ doublet of scalar leptoquarks $S_2$ is capable of providing an explanation for the tensions between the measu
Externí odkaz:
http://arxiv.org/abs/2203.10111
Publikováno v:
JHEP 09 (2022) 148
The kaon sector is characterised by several processes which are under active investigation across different experiments. In this work, we present the global picture that emerges from a study of the different decay modes. We begin by revisiting the th
Externí odkaz:
http://arxiv.org/abs/2206.14748
Autor:
Crivellin, Andreas, Matias, Joaquim
In recent years, exciting (indirect) hints for physics beyond the Standard Model (SM) have been accumulated. In particular, semi-leptonic $B$ decays show deviations from the SM predictions, which, due to the ratios $R(K^{(*)})$ and $R(D^{(*)})$ are o
Externí odkaz:
http://arxiv.org/abs/2204.12175