Boundary localized terms in universal extra-dimensional models through a dark matter perspective

Datta, Anindya; Dey, Ujjal Kumar; Raychaudhuri, Amitava; Shaw, Avirup

doi:10.1103/physrevd.88.016011

Cited by 27 publications

(45 citation statements)

References 75 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Depending on the parameter values, the LKP can be the level-1 photon (B 1 ), the level-1 Z-boson ( W has too small DM abundance thus is not favored [63]. The expected signal rate of KK DM with, e.g., Xenon nuclei is still well below the existing limits set by XENON100 for spin-independent scattering [63]. Higgs DM in UED models is discussed in Ref.…”

Section: Direct Detectionmentioning

confidence: 99%

A review on non-minimal universal extra dimensions

2015

View full text Add to dashboard Cite

show abstract

Section: Direct Detectionmentioning

confidence: 99%

A review on non-minimal universal extra dimensions

2015

View full text Add to dashboard Cite

show abstract

“…For completeness first we describe the general set-up of nmUED with BLTs and as we proceed we point out how to revert to mUED. For a more detailed discussion of the model see [16][17][18][19][20][21][22][23][24][25][26][27][28].…”

Section: Model Descriptionmentioning

confidence: 99%

“…Therefore nmUED has a rich phenomenology compared to the mUED scenario thanks to the presence of the BLT parameters. Some of the recent studies on the phenomenology of the BLTs can be found in [17][18][19][20][21][22][23][24][25][26][27][28]. Now, an important aspect of SM is the absence of flavour changing neutral current (FCNC) interactions at the tree-level.…”

Section: Introductionmentioning

confidence: 99%

Rare top decays in minimal and nonminimal universal extra dimension models

Dey

Jha

2016

Phys. Rev. D

Self Cite

View full text Add to dashboard Cite

The flavour changing decays of the top quark are severely suppressed in the Standard Model by virtue of the Glashow-Iliopoulos-Maiani mechanism. Many beyond Standard Model extensions predict the decay rates at a level that is observable in the LHC. We perform a complete one-loop calculation of the flavour changing top quark decays t → cγ and t → ch in the universal extra dimensional model. Apart from considering the decay rates in the minimal version of the model, we also calculate the rates in the non-minimal scenario where the presence of boundary localised terms interestingly modify the set-up. We find that the decay rates in the minimal variant of the model do not change much from their Standard Model values. In the non-minimal version of this model, these decay rates can be higher for specific choices of the boundary localised parameters for a certain range of inverse compactification radius. But these model parameters lead to Kaluza-Klein particle masses that are in tension with various searches at the LHC.

show abstract

“…Various phenomenological studies in the framework of nmUED have been made to constrain non-minimality parameters from the perspective of electroweak observables [13], S, T and U parameters [11,15], relic density [16,17], measurement of decay width of Z-boson to a pair of b-quarks [18], SM Higgs boson production and decay [19] and from the LHC experiments [20,21].…”

Section: Introductionmentioning

confidence: 99%

Nonminimal universal extra dimensional model confrontsBs→μ+μ−

2016

Self Cite

View full text Add to dashboard Cite

Addition of boundary localised kinetic and Yukawa terms to the action of a 5-dimensional Standard Model would non-trivially modify the Kaluza-Klein spectra and some of the interactions among the Kaluza-Klein excitations compared to the minimal version of this model, in which, these boundary terms are not present. In the minimal version of this framework known as Universal Extra Dimensional model, special assumptions are made about these unknown, beyond the cut-off contributions to restrict the number of unknown parameters of the theory to a minimal. We estimate the contribution of Kaluza-Klein modes to the branching ratios of B s(d) → µ + µ − in the framework of non-minimal Universal Extra Dimensional, at one loop level. The results have been compared to the experimental data to constrain the parameters of this model. From the measured decay branching ratio of B s → µ + µ − (depending on the values of boundary localised parameters) lower limit on R −1 can be as high as 800 GeV. We have briefly reviewed the bounds on nmUED parameter space coming from electroweak precision observables. The present analysis (B s → µ + µ − ) has ruled out new regions of parameter space in comparison to the analysis of electroweak data. We have revisited the bound on R −1 in Universal Extra Dimensional model, which came out to be 454 GeV. This limit on R −1 in Universal Extra Dimensional framework is not as competitive as the limits derived from the consideration of relic density or Standard Model Higgs boson production and decay to W + W − . Unfortunately, B d → µ + µ − decay branching ratio would not set any significant limit on R −1 in a minimal or non-minimal Universal Extra Dimensional model.

show abstract

Boundary localized terms in universal extra-dimensional models through a dark matter perspective

Cited by 27 publications

References 75 publications

A review on non-minimal universal extra dimensions

A review on non-minimal universal extra dimensions

Rare top decays in minimal and nonminimal universal extra dimension models

Nonminimal universal extra dimensional model confrontsBs→μ+μ−

Contact Info

Product

Resources

About