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      B -> Xs l_i^+ l_j^+ Decays with R-parity Violation

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          Abstract

          We derive the upper bounds on certain products of R-parity- and lepton-flavor-violating couplings from B\raXsli+lj decays. These modes of B-meson decays can constrain the product combinations of the couplings with one or more heavy generation indices which are comparable with or stronger than the present bounds. From the studies of the invariant dilepton mass spectrum and the forward backward asymmetry of the emitted leptons we note the possibility of detecting R-parity-violating signals even when the total decay rate due to R-parity violating couplings is comparable with that in the standard model and discriminating two types of R-parity-violating signals. The general expectation of the enhancement of the forward backward asymmetry of the emitted leptons in the minimal supersymmetric standard model with R-parity may be corrupted by R-parity violation.

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          A wide scalar neutrino resonance and b\bar{b} production at LEP

          , , (2009)
          In supersymmetric models with R-parity violation, scalar neutrinos may be produced as s-channel resonances in e^+e^- colliders. We note that within current constraints, the scalar neutrino may have a width of several GeV into b\bar{b} and be produced with large cross section, leading to a novel supersymmetry discovery signal at LEP II. In addition, if the scalar neutrino mass approximately equals m_Z, such a resonance necessarily increases R_b and reduces A_{FB}(b), significantly improving the fit to electroweak data. Bounds from B meson and top quark decays are leading constraints, and we stress the importance of future measurements.
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            Author and article information

            Journal
            28 November 1997
            Article
            10.1103/PhysRevD.58.035006
            hep-ph/9711504
            226d3a84-690d-481d-9a2f-e010d1f673d6
            History
            Custom metadata
            KAIST-TH 97/21
            Phys.Rev. D58 (1998) 035006
            10 pages, Revtex, 1 table and 2 figures
            hep-ph

            High energy & Particle physics
            High energy & Particle physics

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