Flavor-changing neutral currents in the minimal 3-3-1 model revisited

Machado, A. C. B.; Montero, J. C.; Pleitez, V.

doi:10.1103/physrevd.88.113002

Cited by 39 publications

(67 citation statements)

References 63 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In [41] Further studies of the 331 model can be found in [407,408] where the lepton sector was analyzed in detail and in [409][410][411] where mixing of neutral mesons as well as a number of rare K and B d,s decays have been considered. The decay b → sγ was considered in [412,413] and in [414] also neutral scalar contributions were included.…”

Section: Modelmentioning

confidence: 99%

Towards the identification of new physics through quark flavour violating processes

2014

View full text Add to dashboard Cite

We outline a systematic strategy which should help in this decade to identify New Physics (NP) beyond the Standard Model (SM) by means of quark flavour violating processes and thereby to extend the picture of short distance physics down to the scales as short as 10 −20 m and even shorter distance scales corresponding to energies of 100 TeV. Rather than using all possible flavour violating observables that will be measured in the coming years at the LHC, SuperKEKB and in Kaon physics dedicated experiments at CERN, J-PARC and Fermilab, we concentrate on those observables that are theoretically clean and very sensitive to NP. Assuming that the data on the selected observables by us will be very precise, we stress the importance of correlations between these observables as well as of future precise calculations of non-perturbative parameters by means of lattice QCD simulations with dynamical fermions. Our strategy consists of twelve steps which we will discuss in detail illustrating possible outcomes with the help of the SM, models with constrained Minimal Flavour Violation (CMFV), MFV at large and models with tree-level FCNCs mediated by neutral gauge bosons and scalars. We also briefly summarize the status of a number of concrete models. We propose DNA-charts that exhibit correlations between flavour observables in different NP scenarios. The models with new left-handed and/or right-handed currents and non-MFV interactions can be distinguished transparently in this manner. We emphasize the important role of the stringent CMFV relations between various observables as standard candles of flavour physics. The pattern of deviations from these relations may help in identifying the correct NP scenario. The success of this program will be very much facilitated through direct signals of NP at the LHC even if LHC will not be able to probe the physics at scales shorter than 4×10 −20 m. We also emphasize the importance of lepton flavour violation, electric dipole moments and (g − 2) e,µ in these studies.

show abstract

Section: Modelmentioning

confidence: 99%

Towards the identification of new physics through quark flavour violating processes

2014

View full text Add to dashboard Cite

show abstract

“…Store type was also a varying factor, with charities opposed to pedestrianisation as they required vehicular drop-offs, whilst cafés and restaurants were found to favour such a scheme. Retailers were shown to be mixed over whether to utilise a pedestrianised area and this would allow a free opportunity to strengthen the link between their environment, creating a living space to meet visitor needs (Gehl et al, 2006;Machado et al, 2013). If however they are unwilling to occupy the space and create this connection, the merit of such a scheme is diminished.…”

Section: Divide In Perceptions Of Retailersmentioning

confidence: 99%

“…Despite prioritising interventions for vacant stores (Figures 3 and 6) many retailers wished to pursue the default, even though they had stated it not to be working. The divide in retailers wishing to attend trader association meetings is also a concern as it has been reported that improved communication among stakeholders allows a retail area to better respond to visitors (Machado et al, 2013;Medway et al, 2000). Difficulty in attending meetings can be understood due to limitation for SMEs with previous research showing that many traders find it difficult to collaborate with each other due to financial and time constraints (Hall, 2015;LSE Cities, 2017) however the finding that 40% would never attend regardless of incentives is troubling as Hall (2015) states, business associations are places where retailers are able to engage in change.…”

Section: Divide In Perceptions Of Retailersmentioning

confidence: 99%

Aspirations of Retailers and Visitors Towards the Regeneration of Declining Streets in Cities

Turner

Bahaj

Teli

2018

Future Cities and Environment

View full text Add to dashboard Cite

City Centre retail spaces are integral to the sustainability of cities, and within this hierarchy secondary shopping streets, which act as hubs for local communities and businesses, have become isolated. There is now a recognised need for academic studies to reverse these trends in these areas, especially in a UK context. This work analysed and compared stakeholders' perceptions of urban interventions in a declining secondary retail area in Southampton. The investigation was based on interviews and surveys of stakeholders, as well as observational studies enhanced through analysis of secondary data.This paper presents the outcomes of such investigations addressing the perceptions and behaviours of retailers and visitors, focusing on where these are aligned or divided. The overall results reveal that retailers are more concerned with 'static' improvements, such as parking provisions or building façade improvements, while visitors are concerned with active and spatial improvements, with street level interventions being the most important. The results also show that (a) whilst retailers may believe that they understand what visitors require; they differ greatly and (b) many aspirations of retailers are costly or dependant on other businesses' intentions. Visitor's desires: include the reuse of vacant stores and creation of public space, which are far more viable, and can be enacted by governance. Such options should be trialled as a means to educate and improve understanding of less traditional interventions. The paper also provides input on ways to make these failing areas more sustainable through a shared vision and wide applicability.

show abstract

“…(9) and (10) give the correct quark masses (at the Z-pole given in Ref. [20]) and the CKM All these couplings should be multiplied by √ 2, it is a conversion factor from the notation used in [20] to our notation.…”

Section: B Quarksmentioning

confidence: 99%

“…On the equations above we have considered the V U L,R and V D L,R matrices to be real, that is because we considered the numerical results presented in [20] for such matrices and for the Yukawa couplings [see Eqs. (9) and (10)].…”

Section: The Neutron Edmmentioning

confidence: 99%

Electron and neutron electric dipole moment in the 3-3-1 model with heavy leptons

Conto

Pleitez

2015

Phys. Rev. D

Self Cite

View full text Add to dashboard Cite

We calculate the electric dipole moment for the electron and neutron in the framework of the 3-3-1 model with heavy charged leptons. We assume that the only source of CP violation arises from a complex trilinear coupling constant and the three complex vacuum expectation values. However, two of the vacua phases are absorbed and the other two are equal up to a minus sign. Hence only one physical phase survives. In order to be compatible with the experimental data this phase has to be smaller than 10 −6 .

show abstract

Flavor-changing neutral currents in the minimal 3-3-1 model revisited

Cited by 39 publications

References 63 publications

Towards the identification of new physics through quark flavour violating processes

Towards the identification of new physics through quark flavour violating processes

Aspirations of Retailers and Visitors Towards the Regeneration of Declining Streets in Cities

Electron and neutron electric dipole moment in the 3-3-1 model with heavy leptons

Contact Info

Product

Resources

About