Implications of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>b</mml:mi><mml:mo>→</mml:mo><mml:mi>s</mml:mi><mml:mi>γ</mml:mi></mml:math>Decay Measurements in Testing the Higgs Sector of the Minimum Supersymmetric Standard Model

Barger, V.; Berger,; Phillips, R. J.

doi:10.1103/physrevlett.70.1368

Cited by 130 publications

(75 citation statements)

References 34 publications

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“…The experimental situation on Re(ε ′ /ε) is unclear at present. While the result of the NA31 collaboration at CERN with Re(ε ′ /ε) = (23 ± 7) · 10 −4 (Barr et al, 1993) clearly indicates direct CP violation, the value of E731 at Fermilab, Re(ε ′ /ε) = (7.4 ± 5.9) · 10 −4 (Gibbons et al, 1993), is compatible with superweak theories (Wolfenstein, 1964) in which ε ′ /ε = 0. The E731 result is in the ball park of the theoretical estimates.…”

Section: H Numerical Resultsmentioning

confidence: 55%

Weak decays beyond leading logarithms

1996

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arXiv:hep-ph/9512380v1 15 Dec 1995 M P I − P h/95 − 104 T U M − T 31 − 100/95 F ERM ILAB − P U B − 95/305 − T SLAC − P U B 7009 November 1995) to appear in Reviews of Modern Physics WEAK DECAYS BEYOND LEADING LOGARITHMS AbstractWe review the present status of QCD corrections to weak decays beyond the leading logarithmic approximation including particle-antiparticle mixing and rare and CP violating decays. After presenting the basic formalism for these calculations we discuss in detail the effective hamiltonians for all decays for which the next-to-leading corrections are known. Subsequently, we present the phenomenological implications of these calculations. In particular we update the values of various parameters and we incorporate new information on m t in view of the recent top quark discovery. One of the central issues in our review are the theoretical uncertainties related to renormalization scale ambiguities which are substantially reduced by including next-to-leading order corrections. The impact of this theoretical improvement on the determination of the Cabibbo-Kobayashi-Maskawa matrix is then illustrated in various cases. *

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Section: H Numerical Resultsmentioning

confidence: 55%

Weak decays beyond leading logarithms

1996

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“…These contributions can either increase or decrease the b ! s decay rate compared with the Standard Model expectation [20,21].…”

Section: Radiative C Harmless Decaysmentioning

confidence: 99%

Study of rareb decays with the DELPHI detector at LEP

Adam

Adye

Agasi

et al. 1996

Z. Phys. C - Particles and Fields

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Rare decays of beauty particles were studied in several charmless modes using the data collected with the DELPHI detector at LEP from 1991 to 1994. respectively. The fraction of these decays with a charged kaon in the nal state that is not from the spectator s quark, was measured to be 0:58 0:18. Upper limits were set at 90% con dence level on the branching ratios for three and four body charmless hadronic decays in the range of (1 3 To be submitted to Zeit. f. Physik C ii

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“…A critical constraint [43,47,48] on the supersymmetric spectrum is the rare decay b → sγ. We remark here that regions of the parameter space illustrated in the previous figures are not ruled out by this constraint.…”

Section: Particlementioning

confidence: 99%

Supersymmetric particle spectrum

1994

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We examine the spectrum of supersymmetric particles predicted by grand unified theoretical (GUT) models where the electroweak symmetry breaking is accomplished radiatively. We evolve the soft supersymmetry breaking parameters according to the renormalization group equations (RGE). The minimization of the Higgs potential is conveniently described by means of tadpole diagrams. We present complete one-loop expressions for these minimization conditions, including contributions from the matter and the gauge sectors. We concentrate on the low tan β fixed point region (that provides a natural explanation of a large top quark mass) for which we find solutions to the RGE satisfying both experimental bounds and fine-tuning criteria. We also find that the constraint from the consideration of the lightest supersymmetric particle as the dark matter of the universe is accommodated in much of parameter space where the lightest neutralino is predominantly gaugino. The supersymmetric mass spectrum displays correlations that are model-independent over much of the GUT parameter space.

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Implications ofb→sγDecay Measurements in Testing the Higgs Sector of the Minimum Supersymmetric Standard Model

Cited by 130 publications

References 34 publications

Weak decays beyond leading logarithms

Weak decays beyond leading logarithms

Study of rareb decays with the DELPHI detector at LEP

Supersymmetric particle spectrum

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