ENERGY CORRELATION AND ASYMMETRY OF SECONDARY LEPTONS IN E+E--]T(T)OVER-BAR

被引：35

作者：

ARENS, T

SEHGAL, LM

机构：

[1] III. Physikalisches Institut, RWTH Aachen

来源：

PHYSICAL REVIEW D | 1994年 / 50卷 / 07期

关键词：

D O I：

10.1103/PhysRevD.50.4372

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Top quarks produced in the reaction e+e- --> ttBAR are predicted to have a strong spin-spin correlation. We show that this correlation reflects itself in a strong energy correlation of the charge leptons produced in the decays t --> bl+nu(l) (tBAR --> bBARl-nuBARl). Analytical expressions are given for the two-dimensional distribution dsigma/dxdx' where x and x' are scaled energy variables of l+ and l-. In the presence of a CP-violating term in the e+e- --> ttBAR amplitude, this correlation acquires an antisymmetric component which is also calculated. Our formalism yields compact expressions for the single-particle energy spectra of l+ and l- and the asymmetry between them.

引用

页码：4372 / 4381

页数：10

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