Anomalous W{sup +}W{sup {minus}}t{bar t} couplings at the e{sup +}e{sup {minus}} linear collider
- Department of Physics and Astronomy, Michigan State University, East Lansing, Michigan48824 (United States)
We study production of t{bar t} via W{sup +}W{sup {minus}} fusion, including the initial state radiation background at the proposed Linear Collider (an e{sup +}e{sup {minus}} collider with {radical} (S) =1.5 TeV) in the context of a standard model (SM) without a Higgs boson, i.e., a nonlinear SU(2){sub L}{times}U(1){sub Y} chiral Lagrangian, including dimension five W{sup +}W{sup {minus}}t{bar t}interactions. Deviation from the SM total cross section can be used to constrain the coefficients of these operators to an order of 0.2 (divided by the cutoff scale {Lambda}=3.1 TeV) with a 95{percent} C.L. However, there are three ways in which this sensitivity can be improved by a factor of two. First, by studying the deviation of the t{bar t} kinematics from what is predicted by the SM; second, by polarizing the collider electron beam; and third, by studying the polarization of the produced top quarks. In this way, we show that it is also possible to attempt to disentangle the contributions from different anomalous operators, isolating the form of new physics contributions. {copyright} {ital 1998} {ital The American Physical Society}
- OSTI ID:
- 615339
- Journal Information:
- Physical Review, D, Journal Name: Physical Review, D Journal Issue: 5 Vol. 57; ISSN PRVDAQ; ISSN 0556-2821
- Country of Publication:
- United States
- Language:
- English
Similar Records
Implications of a {bold {ital W}}{sup +}{bold {ital W}}{sup {minus}}({bold {ital ZZ}})-Higgs boson- {bold {ital t{bar c}}} interaction for {bold {ital e}}{sup +}{bold {ital e}}{sup {minus}}{r_arrow}{bold {ital t{bar c}{nu}{sub e}{bar {nu}}}}{bold {ital {sub e}}}, {bold {ital t{bar c}e}}{sup +}e{sup {minus}}, {bold {ital t{bar c}Z}} and for {bold {ital t{r_arrow}cW}}{sup +}{bold {ital W}}{sup {minus}}, {bold {ital cZZ}} in a two Higgs doublet model
Probing noncommuting extended technicolor effects by e{sup +}e{sup {minus}}{r_arrow}t{bar t} at the Next Linear Collider
Model-independent description of new physics effects in e{sup +}e{sup {minus}}{r_arrow}t{bar t}
Journal Article
·
Sat Feb 28 23:00:00 EST 1998
· Physical Review, D
·
OSTI ID:615334
Probing noncommuting extended technicolor effects by e{sup +}e{sup {minus}}{r_arrow}t{bar t} at the Next Linear Collider
Journal Article
·
Tue Jul 01 00:00:00 EDT 1997
· Physical Review, D
·
OSTI ID:531982
Model-independent description of new physics effects in e{sup +}e{sup {minus}}{r_arrow}t{bar t}
Journal Article
·
Thu May 01 00:00:00 EDT 1997
· Physical Review, D
·
OSTI ID:562874