Precise determination of the W tb couplings at the CERN Large Hadron Collider -: art. no. 014009

被引：47

作者：

del Aguila, F ^{[1
]}

Aguilar-Saavedra, JA

机构：

[1] Univ Granada, Dept Fis Teor & Cosmos, E-18071 Granada, Spain

[2] Inst Super Tecn, Dept Fis, P-1049001 Lisbon, Portugal

[3] Inst Super Tecn, CFIF, P-1049001 Lisbon, Portugal

来源：

PHYSICAL REVIEW D | 2003年 / 67卷 / 01期

关键词：

D O I：

10.1103/PhysRevD.67.014009

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Top pair production at the CERN LHC is the ideal place to search for nonstandard Wtb couplings in t-->Wb-->lnub decays. The lb forward-backward asymmetry in the W rest frame is very sensitive to sigma(munu) couplings, and can spot one-loop QCD corrections to the decay vertex with more than 5sigma statistical significance. We discuss the potential of this asymmetry to signal nonstandard gamma(mu) and sigma(munu) couplings and compare with t (t) over bar spin correlation asymmetries, which have a lower sensitivity. We also briefly summarize the results for the Fermilab Tevatron.

引用

页数：5

共 29 条

[1]

AGUILARSAAVEDRA JA, IN PRESS PHYS REV D

[2]

AGUILARSAAVEDRA JA, HEPPH0106315

[3]

AHMED S, HEPEX9908022

[4] Single top quark at future hadron colliders: Complete signal and background study [J].

Belyaev, AS ;

Boos, EE ;

Dudko, LV .

PHYSICAL REVIEW D, 1999, 59 (07)

[5]

Beneke M., HEPPH0003033

[6] ON THE PRODUCTION OF A W AND JETS AT HADRON COLLIDERS [J].

BERENDS, FA ;

KUIJF, H ;

TAUSK, B ;

GIELE, WT .

NUCLEAR PHYSICS B, 1991, 357 (01) :32-64

[7] Top-quark spin correlations at hadron colliders: Predictions at next-to-leading order QCD [J].

Bernreuther, W ;

Brandenburg, A ;

Si, ZG ;

Uwer, P .

PHYSICAL REVIEW LETTERS, 2001, 87 (24) :242002-242002

[8] Single top production in e+e-, e-e-, γe and γγ collisions [J].

Boos, E ;

Dubinin, M ;

Pukhov, A ;

Sachwitz, M ;

Schreiber, HJ .

EUROPEAN PHYSICAL JOURNAL C, 2001, 21 (01) :81-91

[9]

Boos E, 1999, EUR PHYS J C, V11, P473

[10] Spin-spin correlations of top quark pairs at hadron colliders [J].

Brandenburg, A .

PHYSICS LETTERS B, 1996, 388 (03) :626-632

← 1 2 3 →