Reestimate for CP Asymmetries in Decays of Neutral B-Flavored Mesons

Zhu Guohuai

Chinese Physics C> 1996, Vol. 20> Issue(10) : 913-918

Reestimate for CP Asymmetries in Decays of Neutral B-Flavored Mesons

Zhu Guohuai ^,

Special Class for Gifted Young, University of Science and Technology of China, Hefei 230026

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Abstract：
The CP violating effects in partial-decay-rate asymmetries of the Bd0 and Bs0 systems are reestimated with the method of amplitude ratio. We concentrate on those hadronic final states which are CP eigenstates. We find that for testing CP violations,except the well known Bd0→ψKs, the best decay is Bd0→D⁺D^－, which needs, for 3σ signature, 2.2×10⁷ bb pairs.

References

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J.Ellis et al.NuclPhys.B131（1977）285;ibid;B132（1978）541;A.Ali.Z.Z.Aydin,Nucl.Phys.B148（1979）165;A.B.Carter,A.I.Sanda,PhysRev.Lett、45（1980）952;PhysRev.,D23（1981）1567;I.I.Bigi,A.L.Sanda,Nucl.Phys,B193（1981）85;Phys.Rev.D29（1984）1393.[2] D.S.Du.L.Dunietz,D.D.Wu、Phys.Rev.,D34（1986）1414;I.Dunietz,J.L.Rosner,Phys.Rev.,D34（1986）1404;I.I.Bigi,A.LSanda,Nucl.Phys,B281（1987）41;ibid.,B193（1981）85.[3] R.G.Sachs,Physics of Time Reversal（University of Chicago Press,Chicago）.[4] L.Wolfenstein,Phys.Rev.Lett,51（1983）1945.[5] Dan-di Wu,Phys.Lett,B90（1980）451.[6] D.S.Du,I.Dunietz,D.D.Wu,PhysRev.D34（1986）3414.[7] A.B.Carter,A.I.Sanda,Phys.Rev.Lett.45（1980）952.[8] A.Ali,D.London,Preprint CERN-TH.7408/94.[9] L.L.Bigi,A.I.Sanda,NuclPhys.B193（1981）85.[10] M.Neubert,V.Rieckert,B.Stech,Preprint HD-THEP-91-28.[11] B.Guberina et al,Phys.Lett,B90（1980）169;G.Eilam,J.P.Leveille,Phys.Rev.Lett、44（1980）1648.

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Zhu Guohuai. Reestimate for CP Asymmetries in Decays of Neutral B-Flavored Mesons[J]. Chinese Physics C, 1996, 20(10): 913-918.

Zhu Guohuai. Reestimate for CP Asymmetries in Decays of Neutral B-Flavored Mesons[J]. Chinese Physics C, 1996, 20(10): 913-918. shu

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Received: 1900-01-01
Revised: 1900-01-01

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沈阳化工大学材料科学与工程学院沈阳 110142

Reestimate for CP Asymmetries in Decays of Neutral B-Flavored Mesons

Zhu Guohuai ^,

Corresponding author: Zhu Guohuai,

Special Class for Gifted Young, University of Science and Technology of China, Hefei 230026

Received Date: 1900-01-01
Accepted Date: 1900-01-01
Available Online: 1996-10-05

Abstract: The CP violating effects in partial-decay-rate asymmetries of the Bd0 and Bs0 systems are reestimated with the method of amplitude ratio. We concentrate on those hadronic final states which are CP eigenstates. We find that for testing CP violations,except the well known Bd0→ψKs, the best decay is Bd0→D⁺D^－, which needs, for 3σ signature, 2.2×10⁷ bb pairs.