Abstract
The rare semileptonic decay B 0 → ϕl + l− , where l is an electron or muon, is considered in the QCD Factorization approach. The differential branching fraction, partially integrated over the interval q 2 = [1 GeV2 , 8 GeV2 ] of dilepton invariant mass squared, is estimated. The systematic uncertainty up to 10% resulting from the choice of the B -meson distribution amplitude is determined. The purely perturbative contribution to the B 0 → ϕl + l− total branching fraction is found to be B ∼ 10−12 which suggests searches of the B 0 → ϕμ + μ− decay in the four-muon events at the LHC collider.
Highlights
In particular related to the bottom quark, has been an important aspect of the high energy physics research carried out in experiments at hadron colliders at CERN and Fermilab and at the so-called B-meson factories operated at SLAC and KEK
The LHCb Collaboration working at the CERN proton-proton collider LHC is at the experimental forefront in flavor physics
From a theoretical point of view, one of basic research goals in B-meson physics is a search for physics beyond the Standard Model (BSM) in rare B-meson decays
Summary
In particular related to the bottom (or b) quark, has been an important aspect of the high energy physics research carried out in experiments at hadron colliders at CERN and Fermilab and at the so-called B-meson factories operated at SLAC and KEK. The LHCb Collaboration working at the CERN proton-proton collider LHC is at the experimental forefront in flavor physics These researches will be set forth at the Super-KEKB factory at KEK which is close to start its operation now. Precise data from the B-factory experiments BELLE and BaBar in the decays B → ππ, πK, KK, ηK, η K, and related decays in which one of the pseudoscalar particles is replaced by a vector particle, show several mismatches between the predictions of the theories based on the QCD factorization and measurements (see, for example, [17]). This is the extended version of [27] and the details will be published elsewhere [28] This decay is can be experimentally searched by the LHCb. Collaboration at the LHC collider and by the Belle-II Collaboration at the forthcoming Super-KEKB factory at KEK
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