Localizing gravity on Maxwell gaugedCP1model in six dimensions

Abstract

We shall consider about a 3-brane embedded in six-dimensional space-time with a negative bulk cosmological constant. The 3-brane is constructed by a topological soliton solution living in two-dimensional axially symmetric transverse subspace. Similar to most previous works of sixdimensional soliton models, our Maxwell gauged CP 1 brane model can also achieve to localize gravity around the 3-brane. The CP 1 field is described by a scalar doublet and derived from O(3) sigma model by projecting it onto two-dimensional complex space. In that sense, our framework is more effective than other solitonic brane models concerning with gauge theory. We shall also discuss about linear stability analysis for our new model by fluctuating all fields.

RENAISSANCE OF THE ~1 TeV FIXED-TARGET PROGRAM

“…In the Standard Model, ν τ charged current interactions are mediated by W -boson exchange. There is only one measurement (with error bars around 50%) of the charged-current scattering cross-section with initial-state tau neutrinos [83], and it agrees with Standard Model expectations. The expectations are that the ν τ → τ transitions are well-described by the Standard Model thanks to abundant data on τ Figure 10: Two arbitrary views of a simulated 220 GeV ν τ CC interaction in a magnetized MicroBooNE-like LArTPC with 3 mm wire spacing in the charge collection planes.…”

“…Since the discovery of the charged τ lepton [82], physicists have assumed the existence of a weak partner particle, ν τ , analogous to the neutrino partners of the e and µ leptons as required by the Standard Model and directly observed for the first time only recently by the DONuT experiment [83,84]. Indeed, the wealth of studies of charged τ lepton properties also require an accompanying tau-neutrino (ν τ ) for a consistent description of the observed dynamics.…”

“…Little is directly known about the ν τ itself 3 . To date, only nine ν τ charged-current events have ever been detected [83,84] and all other information we have on this neutrino weak eigenstate is indirect 4 . An experiment sensitive to τ leptons placed along the path of an intense, ν τ -rich neutrino beam would add significantly to our understanding of electroweak interactions and would be sensitive to certain hard-to-get manifestations of new physics.…”

“…For discussion of this ν τ experiment, we assume a similar neutrino production facility as was used for DONuT [83], as shown in Fig. 7, but at the higher intensity described elsewhere in this document and using a different detector.…”

Inflating baby-Skyrme branes in six dimensions

“…The authors found regular, static solutions with non-trivial topology which realize warped compactification for a negative bulk cosmological constant. Also, a somewhat different model, namely Maxwell gauged CP 1 type of non-linear σ model has been investigated in [18]. (6) R − Λ (6) ,…”