Neutrino Masses and Hubble Tension via a Majoron in MFV

Arias-Aragon, Fernando; Fernandez-Martinez, Enrique; Gonzalez-Lopez, Manuel; Merlo, Luca

doi:10.48550/arxiv.2009.01848

Cited by 5 publications

(9 citation statements)

References 125 publications

(143 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Once the spurions acquire their background values, the Wilson coefficients of these operators are suppressed by factors proportional to fermions masses and mixings. It follows that present experimental bounds from different experiments, both low-energy flavour factories and high-energy particle colliders, allow NP contributions with a cut-off of a few TeV [19][20][21][22][33][34][35][36][37][38][39][40][41][42][43][44][45].…”

Section: Flavour Contexts Minimal Flavour Violationmentioning

confidence: 99%

Searching for BSM Physics in Yukawa Couplings and Flavour Symmetries

Alonso-Gonzalez,

de Giorgi,

Merlo

et al. 2021

Preprint

View full text Add to dashboard Cite

Section: Flavour Contexts Minimal Flavour Violationmentioning

confidence: 99%

Searching for BSM Physics in Yukawa Couplings and Flavour Symmetries

Alonso-Gonzalez,

de Giorgi,

Merlo

et al. 2021

Preprint

View full text Add to dashboard Cite

“…Neutrino self interactions can be mediated by scalars and gauge bosons which are motivated from different particles physics models [31][32][33][34][35][36]. The lepton number is conserved in standard model and in extensions of the standard model where lepton number is broken spontaneously there are scalars called Majorons which arise Goldstone bosons of the lepton number symmetry breaking [37]. Neutrino self interactions can also arise from gauged lepton number and anomaly free extensions of the standard model light gauge bosons which couple to neutrinos and evade all other experimental constraints have been constructed [38].…”

Section: Self Interaction In Neutrinosmentioning

confidence: 99%

Flavour specific neutrino self-interaction: $H_0$ tension and IceCube

Mazumdar¹,

Mohanty²,

Parashari³

2020

Preprint

View full text Add to dashboard Cite

Self interaction in the active neutrinos is studied in the literature to alleviate the H0 tension. Similar selfinteraction can also explain the observed dips in the flux of the neutrinos, coming from the distant astro-physical sources, in IceCube detectors. In contrast to the flavour universal neutrino interactions considered for solving the H0 tension, which is ruled out from particle physics experiments, we consider flavour specific neutrino interactions in CMB and IceCube data. We show that the values of self-interaction coupling constant and mediator mass required for explaining the IceCube dips are inconsistent with the strong neutrino self-interactions preferred by the combination of the HST and Planck data. However, the smaller amount of self-interaction between ντ can explain the resonant absorption features in IceCube data and help in solving the H0 tension.

show abstract

“…Axions and Axion-like particles (ALPs) experienced a revival of interest in the last years. From a more theoretical point of view, several studies appeared on axion constructions that extend the Peccei-Quinn model [1][2][3] and the original invisible axion models, [4][5][6][7] investigating possible axion flavour dynamics, [8][9][10][11][12] whose pioneering idea goes back to Ref. [13], or analysing the axion presence in composite Higgs frameworks, [14][15][16] or focusing on studying and enlarging the classical QCD axion parameter space, [17][18][19][20][21][22][23][24] showing that QCD axions may be much lighter or much heavier than in the classical scenario.…”

Section: Introductionmentioning

confidence: 99%

Probing HNL‐ALP Couplings at Colliders

Giorgi

Merlo

Tastet

2023

Fortschritte der Physik

View full text Add to dashboard Cite

Axion‐like particles (ALPs) and heavy neutral leptons (HNLs) are both well‐motivated extensions of the Standard Model. As ALPs couple to on‐shell fermions proportionally to their masses, processes involving both types of particles may give rise, for TeV HNLs, to relevant phenomenology at colliders. In this work, we point out a particularly clean process, whose final state consists of four jets and two charged leptons, and we estimate its current and future sensitivity at the LHC. For on‐shell HNLs, i) there is no dependence on the overall scale of the mixing between HNLs and the active neutrinos, making this process sensitive down to the type‐I Seesaw line; ii) the signal strength of the process is sizable only as far as the HNL masses are below a few TeVs, contrary to what the proportionality to masses of the ALP couplings may suggest. Although ALPs and HNLs have been mainly studied independently in the literature, considering their interplay may lead to joint limits that are much stronger than those on the individual particles taken separately. This concise study paves the way for similar searches at colliders and other experiments.

show abstract

Neutrino Masses and Hubble Tension via a Majoron in MFV

Cited by 5 publications

References 125 publications

Searching for BSM Physics in Yukawa Couplings and Flavour Symmetries

Searching for BSM Physics in Yukawa Couplings and Flavour Symmetries

Flavour specific neutrino self-interaction: $H_0$ tension and IceCube

Probing HNL‐ALP Couplings at Colliders

Contact Info

Product

Resources

About