THE DECAY-RATE ASYMMETRY OF THE TOP-QUARK

被引：35

作者：

GRZADKOWSKI, B ^{[1
]}

KEUNG, WY ^{[1
]}

机构：

[1] CERN,DIV THEORY,CH-1211 GENEVA 23,SWITZERLAND

来源：

PHYSICS LETTERS B | 1993年 / 319卷 / 04期

关键词：

D O I：

10.1016/0370-2693(93)91761-B

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The asymmetries A(k) = [GAMMA(t --> W+d(k))-GAMMA(tBAR --> W-d(k)BAR)]/[GAMMA(t --> W+d(k))+GAMMA(tBAR --> W-d(k)BAR)] in the partial widths of the top quark decays are discussed within the Standard Model (SM), the Two-Higgs-Doublet Model (2HDM) and supersymmetric extensions of the SM (SSM). The leading contributions to these asymmetries in the SM and in the 2HDM are induced by the up-type quark self-energy diagrams and are found to be very small. However, in the SSM, the asymmetry A(b) can be substantial, O (alpha(QCD)), provided the CP-violating phase of gluino-top-stop couplings is not suppressed. Within the SSM A(b) is generated by the vertex corrections.

引用

页码：526 / 532

页数：7

共 50 条

[31] TOP PRICE FOR THE TOP-QUARK [J].

HORGAN, J .

SCIENTIFIC AMERICAN, 1995, 272 (05) :20-21

[32] TOP-QUARK MASS AND W, Z DECAY-RATES [J].

TRAN, MD .

PHYSICAL REVIEW D, 1981, 23 (11) :2769-2772

[33] Top-quark pair-production and decay at high precision [J].

Gao, Jun ;

Papanastasiou, Andrew S. .

PHYSICAL REVIEW D, 2017, 96 (05)

[34] OBSERVATION OF THE TOP-QUARK [J].

ABACHI, S ;

ABBOTT, B ;

ABOLINS, M ;

ACHARYA, BS ;

ADAM, I ;

ADAMS, DL ;

ADAMS, M ;

AHN, S ;

AIHARA, H ;

ALITTI, J ;

ALVAREZ, G ;

ALVES, GA ;

AMIDI, E ;

AMOS, N ;

ANDERSON, EW ;

ARONSON, SH ;

ASTUR, R ;

AVERY, RE ;

BADEN, A ;

BALAMURALI, V ;

BALDERSTON, J ;

BALDIN, B ;

BANTLY, J ;

BARTLETT, JF ;

BAZIZI, K ;

BENDICH, J ;

BERI, SB ;

BERTRAM, I ;

BEZZUBOV, VA ;

BHAT, PC ;

BHATNAGAR, V ;

BHATTACHARJEE, M ;

BISCHOFF, A ;

BISWAS, N ;

BLAZEY, G ;

BLESSING, S ;

BOEHNLEIN, A ;

BOJKO, NI ;

BORCHERDING, F ;

BORDERS, J ;

BOSWELL, C ;

BRANDT, A ;

BROCK, R ;

BROSS, A ;

BUCHHOLZ, D ;

BURTOVOI, VS ;

BUTLER, JM ;

CASEY, D ;

CASTILLAVALDEZ, H ;

CHAKRABORTY, D .

PHYSICAL REVIEW LETTERS, 1995, 74 (14) :2632-2637

[35] Top-quark physics [J].

Chakraborty, D ;

Konigsberg, J ;

Rainwater, D .

ANNUAL REVIEW OF NUCLEAR AND PARTICLE SCIENCE, 2003, 53 :301-351

[36] Top-quark physics [J].

Yeh, GP .

JOURNAL OF THE KOREAN PHYSICAL SOCIETY, 2004, 45 :S301-S305

[37] TOP-QUARK PHYSICS [J].

JEZABEK, M .

NUCLEAR PHYSICS B, 1994, :197-212

[38] Top-quark condensation [J].

Cvetic, G .

REVIEWS OF MODERN PHYSICS, 1999, 71 (03) :513-574

[39] STATUS OF THE TOP-QUARK [J].

HILL, CT .

AIP CONFERENCE PROCEEDINGS, 1982, (81) :303-311

[40] THE TOP-QUARK AND THE LATTICE [J].

MUNSTER, G .

NUCLEAR PHYSICS B, 1995, :162-165

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