Scalar top quarks at the Run II of the Tevatron in the high tan β regime
نویسنده
چکیده
We discuss the decays of the lightest scalar top quark t̃1 in the Minimal Supersymmetric extension of the Standard Model and show that the final state bτντχ 0 1, where χ01 is the lightest supersymmetric particle, can be dominant in a significant area of the parameter space, in particular in the high tan β regime. We then analyze the prospects for discovering relatively light scalar top quarks accessible at the Tevatron Run II in the bτ and missing energy channel.
منابع مشابه
تولید مزونهای سنگین (S1)Bc در LHC و Tevatron Run II با در نظر گرفتن اسپین کوارک
In this research, we have investigated the effect of spin orientation of quarks on the production of the Bc(1S) heavy mesons. We have calculated the fragmentation functions at initial scale µ° .Then we have modified to µ these fragmentation functions by using Altrali-Parisi equation. Also, we have calculated the transverse momentum distributions of the differential cross sections . Our results...
متن کاملCdf Note 5270 . New Physics with Cdf in Run I and Run Ii 1 Supersymmetric Top and Bottom Searches
We present here recent CDF searches for new phenomena in Run I data. The scalar top and scalar bottom quarks searches are described in the framework of supersymmetric models. We also discuss CDF limits on the Higgs boson and continuum and resonantly produced leptoquarks. Run II starting in March 2001 will allow us to considerably improve the Tevatron reach in all these channels. The Tevatron is...
متن کاملHiggs Sector in Anomaly-Mediated Supersymmetry Breaking Scenario
In the minimum anomaly-mediated supersymmetry breaking (AMSB) model, a universal contribution m0 to all the scalar masses is introduced in order to avoid the negative slepton mass problem. The Higgs spectrum and couplings are determined by four parameters: maux, m0, tan β and sign (μ). The sign of μ affects mA at large tan β and mh at small tan β. The CP-odd Higgs mass mA is usually much larger...
متن کاملFlavor Violation as a Probe of the Mssm Higgs Sector
At moderate to large tan β, it is no longer possible to simultaneously diagonalize the masses of quarks and their couplings to the neutral Higgs bosons. The resulting flavor violations of the form b̄RdLφ and b̄RsLφ do not generate large meson–antimeson mixing amplitudes but do generate large contributes to rare decays such as Bs → μμ. Run II of the Tevatron willl probe a large region of interesti...
متن کاملSearches for Scalar Top and Bottom Quarks at the Tevatron
Searches for the supersymmetric partners of top and bottom quarks using data up to 340 pb −1 taken at the Tevatron p ¯ p collider are described. We report on searches for scalar top quarks˜t in the decays˜t → c ˜ χ 0 1 and˜t → bl˜ν and for scalar bottom quarks˜b in the decay˜b → b ˜ χ 0 1. No evidence for a signal has been found, but improved exclusion regions have been derived in the framework...
متن کامل