Probing nonstandard top-quark couplings using spin correlation

被引：52

作者：

Cheung, K

机构：

[1] Center for Particle Physics, University of Texas, Austin, TX

来源：

PHYSICAL REVIEW D | 1997年 / 55卷 / 07期

关键词：

D O I：

10.1103/PhysRevD.55.4430

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Top spin correlation has been shown to be nontrivial in hadronic top-quark pair production, and can be realized by the asymmetries of the decay products of the top quark and antiquark. We show this work that the top spin correlation is a sensitive probe to the anomalous top-quark couplings beyond the standard model. Specifically, we look at the anomalous chromomagnetic and chromoelectric dipole moments, as well as a right-handed component in the weak decay of the top quark. We find a few measurable asymmetries formed by the decay products of the top-quark pair that vary in accord with the spin correlation.

引用

页码：4430 / 4434

页数：5

共 18 条

[1] 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

[2] NEARBY DOORWAY STATES, PARITY DOUBLETS, AND PARITY MIXING IN COMPOUND NUCLEAR-STATES [J].

AUERBACH, N ;

BOWMAN, JD ;

SPEVAK, V .

PHYSICAL REVIEW LETTERS, 1995, 74 (14) :2638-2641

[3]

AMIDEI D, FERMILABPUB96082

[4] CONSTRAINING ANOMALOUS TOP-QUARK COUPLINGS AT THE FERMILAB-TEVATRON [J].

ATWOOD, D ;

KAGAN, A ;

RIZZO, TG .

PHYSICAL REVIEW D, 1995, 52 (11) :6264-6270

[5] 4-HEAVY-QUARK HADROPRODUCTION [J].

BARGER, V ;

STANGE, AL ;

PHILLIPS, RJN .

PHYSICAL REVIEW D, 1991, 44 (07) :1987-1996

[6]

BOTTS J, 1995, PHYS REV D, V51, P4763

[7] Proposal for detecting top spin correlation effects at the Fermilab Tevatron [J].

Chang, D ;

Lee, SC ;

Soumarokov, A .

PHYSICAL REVIEW LETTERS, 1996, 77 (07) :1218-1221

[8] Probing the chromoelectric and chromomagnetic dipole moments of the top quark at hadronic colliders [J].

Cheung, K .

PHYSICAL REVIEW D, 1996, 53 (07) :3604-3615

[9] Effects of anomalous couplings of quarks on prompt photon production [J].

Cheung, K ;

Silverman, D .

PHYSICAL REVIEW D, 1997, 55 (05) :2724-2727

[10] Top-quark production in hadron-hadron collisions and anomalous top-quark-gluon couplings [J].

Haberl, P ;

Nachtmann, O ;

Wilch, A .

PHYSICAL REVIEW D, 1996, 53 (09) :4875-4885

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