Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
1996-09-06
Commun.Theor.Phys. 29 (1998) 431-436
Physics
High Energy Physics
High Energy Physics - Phenomenology
10 pages, Latex, no macros, no figures, hard copy is available upon request. to appear in Commun.Theor.Phys
Scientific paper
Assuming that the actual values of $m_t$ and the data set ($\Gamma_b$, $\Gamma_h$, $\Gamma_Z$, $R_b$, $R_c$, $R_l$) are within their $1-\sigma$ errors as reported by CDF, D0 and by LEP Collaborations, the parameter $\Delta^{new}_b$ which measures the nonoblique corrections on the $Zb\overline{b}$ vertex from new physics can be determined experimentally. According to the precision data one can obtain updated constraints on the parameters $\xi$ and the masses of the charged PGBs.
Liu Shunmin
Lu Gongru
Wan Lingde
Wang Xuelei
Xiao Zhenjun
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