Bs0–B¯s0 mixing in leptophobic Z′ model

2006/07/31 by Seungwon Baek, Jong Hun Jeon, C. S. Kim · 2 citations
Mathematics · Physics and Astronomy · #Algorithm #Atomic and Subatomic Physics Research #Mathematics #Particle physics theoretical and experimental studies #Philosophy #Quantum Chromodynamics and Particle Interactions #Scroll #Theology #hep-ph

paper · pdf · doi:10.1016/j.physletb.2006.08.041

published as Phys.Lett.B641:183-188,2006 · 13 pages, 8 figures, added one reference, Final version to be published in PLB

arxiv created 2006/08/22 · openalex publication_date 2006/09/01 · arxiv updated 2014/11/17 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05

Abstract

Leptophobic Z^′ gauge boson appears naturally in many grand unified theories, such as flipped SU(5) or string-inspired E₆ models. This elusive particle easily escapes the direct/indirect detections because it does not couple to charged leptons. However, it can generate flavor changing neutral current at tree level. In this letter, we show that the recently measured mass difference, Δm_s, in the B_s⁰ -B_s⁰ system improves the previous bound of flavor changing effective coupling by about one order of magnitude, i.e irrespective of its phase, |U_sb^{Z^′}| ≤ 0.036 for M_Z^′ = 700 GeV, and |U_sb^{Z^′}| ≤ 0.051 for M_Z^′ = 1 TeV.

Citations

• Implications of the Measurement of theBs0B¯s0Mass Difference
• Possibility of a large electroweak penguin contribution inB→Kπmodes
• CP violation and the CKM matrix: assessing the impact of the asymmetric B factories
• New physics inB→ππ andB→πKdecays
• New constraints on SUSY flavour mixing in light of recent measurements at the Tevatron
• MSSM anatomy of the polarization puzzle inB→ϕK*decays
• The B→Kπ puzzle and supersymmetric models
• LeptophobicZ′in stringy flipped SU(5)
• In pursuit of new physics withBsdecays
• Probing new physics through B mixing: Status, benchmarks and prospects
• Polarizations in decaysBu,d→VVand possible implications forR-parity violating supersymmetry
• Bs−bar Bsmixing in the MSSM scenario with large flavor mixing in the LL/RR sector
• Charmless decaysB→ππ,πKandKKin broken SU(3) symmetry
• Leptophobic U(1)'s and theRb−Rcanomalies

Cited by

• Neutral gauge boson contributions to the dimuon charge asymmetry in B decays
• Bs−B¯smixing,Bdecays andR-parity violating supersymmetry