Phenomenology of a<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msup><mml:mrow><mml:mi>Z</mml:mi></mml:mrow><mml:mrow><mml:mo>′</mml:mo></mml:mrow></mml:msup></mml:mrow></mml:math>coupling only to third-family fermions

Andrianov, Alexander A.; Osland, P.; Pankov, A.A.; Romanenko, N.; Sirkka, J.

doi:10.1103/physrevd.58.075001

Cited by 22 publications

(26 citation statements)

References 55 publications

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“…In our numerical estimation, we will assume that M S is in the range of 200 GeV $ 500 GeV. The lower bounds on M Z 0 can be obtained from dijet and dilepton production in the Tevatron experiments [32] or B "…”

Section: Numerical Resultsmentioning

confidence: 99%

Rare decaysBs→l+l−andB→Kl+l−<

2009

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We examine the rare decays B s ! l þ l À and B ! Kl þ l À in the framework of the topcolor-assisted technicolor (TC2) model. The contributions of the new particles predicted by this model to these rare decay processes are evaluated. We find that the values of their branching ratios are larger than the standard model predictions by one order of magnitude in wide range of the parameter space. The longitudinal polarization asymmetry of leptons in B s ! l þ l À can approach Oð10 À2 Þ. The forward-backward asymmetry of leptons in B ! Kl þ l À is not large enough to be measured in future experiments. We also give some discussions about the branching ratios and the asymmetry observables related to these rare decay processes in the littlest Higgs model with T-parity.

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Section: Numerical Resultsmentioning

confidence: 99%

Rare decaysBs→l+l−andB→Kl+l−<

2009

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“…Limits are also weak, e.g., if the Z ′ couples only to the second and third family leptons (Foot et al, 1994) or if it couples only to third family fermions (Andrianov et al, 1998). In fermiophobic models (Barger et al, 1980;Donini et al, 1997) there are no direct couplings of the Z ′ to the SM fermions, although they may be induced by ordinary or kinetic mixing.…”

Section: Decoupled Modelsmentioning

confidence: 99%

The physics of heavyZ′gauge bosons

2009

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The U (1) ′ symmetry associated with a possible heavy Z ′ would have profound implications for particle physics and cosmology. The motivations for such particles in various extensions of the standard model, possible ranges for their masses and couplings, and classes of anomaly-free models are discussed. Present limits from electroweak and collider experiments are briefly surveyed, as are prospects for discovery and diagnostic study at future colliders. Implications of a Z ′ are discussed, including an extended Higgs sector, extended neutralino sector, and solution to the µ problem in supersymmetry; exotic fermions needed for anomaly cancellation; possible flavor changing neutral current effects; neutrino mass; possible Z ′ mediation of supersymmetry breaking; and cosmological implications for cold dark matter and electroweak baryogenesis.

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“…While a Z that couples only to the third family does not have as much coverage it has been studied in Ref. [20].…”

Section: Srmentioning

confidence: 99%