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The European Physical Journal C

, 71:1764 | Cite as

Study of B s φℓ + decay in a single universal extra dimension model

  • Ying LiEmail author
  • Juan Hua
Regular Article - Theoretical Physics

Abstract

Using form factors derived from the light-cone sum rules, we investigate B s φℓ + (=e,μ,τ) in a single universal extra dimension model (UED). In UED, there is only one new parameter with respect to the Standard Model (SM), which is the inverse of the compactification radius R of the extra dimension. In this work, the branching ratios, the dilepton invariant mass spectra, the forward–backward asymmetries, and the lepton polarization asymmetries of B s φℓ + are calculated. For a lower value of 1/R, there are some considerable discrepancies between the UED and SM. However, with the increase of 1/R, the effect of UED tends to diminish; in particular for 1/R≥1000 GeV, two models have approximately the same predictions. Compared with data from CDF for B s φμ + μ , we find that the 1/R tends to be larger than 350 GeV. We also find that the zero crossing point of the forward–backward asymmetry of B s φμ + μ becomes smaller, which would be an important platform for probing the UED effect. These results could be tested in the Large Hadron Collider (LHC) at CERN and the future super-B factory.

Keywords

Form Factor Large Hadron Collider Extra Dimension High Energy Phys Standard Model Prediction 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag / Società Italiana di Fisica 2011

Authors and Affiliations

  1. 1.Department of PhysicsYantai UniversityYantaiChina

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