Λb decays into Λ-vector

Λb decays into Λ-vector
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Λb 衰变成 Λ-向量

DOI:
10.1016/j.physletb.2005.04.014
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发表时间:
2004
期刊:
影响因子:
4.4
通讯作者:
O. Leitner
O. Leitner
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
Z. Ajaltouni;É. Conte;O. Leitner

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对过程ΛB→ΛV(1−),其中Λ→pπ−和V(J/J)→ π + π −或V(ρ0)→π+π−的角分布进行了全面的研究。重点讨论了质子-质子碰撞中产生的初始Λ b极化。极化密度矩阵以及角分布的推导,并帮助构建T-奇观测,使我们能够进行测试的时间反演和CP违反。
A complete study of the angular distributions of the processes, Λb→ΛV(1−), with Λ→pπ−and V(J/Ψ)→ℓ+ℓ−or V(ρ0)→π+π−, is performed. Emphasis is put on the initial Λbpolarization produced in the proton–proton collisions. The polarization density-matrices as well as angular distributions are derived and help to construct T-odd observables which allow us to perform tests of both time-reversal and CP violation.