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Title: 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

Abstract

The standard model with one extra Higgs doublet may give rise to an enhanced {ital tree-level} flavor-changing-scalar coupling of a neutral Higgs boson to a pair of top-charm quarks. This coupling may drive a large {ital tree-level} effective W{sup +}W{sup {minus}}(ZZ)-Higgs boson-t{bar c} interaction. As a result we find that the reactions e{sup +}e{sup {minus}}{r_arrow}t{bar c}{nu}{sub e}{bar {nu}}{sub e}, t{bar c}e{sup +}e{sup {minus}}, t{bar c}Z and the two rare top decays t{r_arrow}cW{sup +}W{sup {minus}}, t{r_arrow}cZZ become very sensitive probes of such an effective interaction. The most promising ones, e{sup +}e{sup {minus}}{r_arrow}t{bar c}{nu}{sub e}{bar {nu}}{sub e}, t{bar c}e{sup +}e{sup {minus}}, may yield several hundreds and up to thousands of such events at the Next Linear Collider with a center of mass energy of {radical} (s) =0.5{endash}2 TeV if the mass of the lightest neutral Higgs boson is a few hundred GeV. The rare decays t{r_arrow}cW{sup +}W{sup {minus}} and t{r_arrow}cZZ may be accessible at the CERN LHC if the mass of the lightest neutral Higgs boson lies in the narrow window 150 GeV{approx_lt}m{sub h}{approx_lt}200 GeV. {copyright} {ital 1998} {ital The American Physical Society}

Authors:
;  [1];  [2];  [3]
  1. Physics Department, University of California, Riverside, California92521 (United States)
  2. Physics Department, Technion-Israel Institute of Technology, Haifa32000 (Israel)
  3. Physics Department, Brookhaven National Laboratory, Upton, New York11973 (United States)
Publication Date:
OSTI Identifier:
615334
Resource Type:
Journal Article
Journal Name:
Physical Review, D
Additional Journal Information:
Journal Volume: 57; Journal Issue: 5; Other Information: PBD: Mar 1998
Country of Publication:
United States
Language:
English
Subject:
66 PHYSICS; STANDARD MODEL; HIGGS BOSONS; COUPLING; NEUTRAL PARTICLES; T QUARKS; C QUARKS; W MINUS BOSONS; W PLUS BOSONS; Z NEUTRAL BOSONS; ELECTRON-POSITRON INTERACTIONS; HIGGS MODEL

Citation Formats

Bar-Shalom, S., Wudka, J., Eilam, G., and Soni, A. 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. United States: N. p., 1998. Web. doi:10.1103/PhysRevD.57.2957.
Bar-Shalom, S., Wudka, J., Eilam, G., & Soni, A. 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. United States. doi:10.1103/PhysRevD.57.2957.
Bar-Shalom, S., Wudka, J., Eilam, G., and Soni, A. Sun . "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". United States. doi:10.1103/PhysRevD.57.2957.
@article{osti_615334,
title = {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},
author = {Bar-Shalom, S. and Wudka, J. and Eilam, G. and Soni, A.},
abstractNote = {The standard model with one extra Higgs doublet may give rise to an enhanced {ital tree-level} flavor-changing-scalar coupling of a neutral Higgs boson to a pair of top-charm quarks. This coupling may drive a large {ital tree-level} effective W{sup +}W{sup {minus}}(ZZ)-Higgs boson-t{bar c} interaction. As a result we find that the reactions e{sup +}e{sup {minus}}{r_arrow}t{bar c}{nu}{sub e}{bar {nu}}{sub e}, t{bar c}e{sup +}e{sup {minus}}, t{bar c}Z and the two rare top decays t{r_arrow}cW{sup +}W{sup {minus}}, t{r_arrow}cZZ become very sensitive probes of such an effective interaction. The most promising ones, e{sup +}e{sup {minus}}{r_arrow}t{bar c}{nu}{sub e}{bar {nu}}{sub e}, t{bar c}e{sup +}e{sup {minus}}, may yield several hundreds and up to thousands of such events at the Next Linear Collider with a center of mass energy of {radical} (s) =0.5{endash}2 TeV if the mass of the lightest neutral Higgs boson is a few hundred GeV. The rare decays t{r_arrow}cW{sup +}W{sup {minus}} and t{r_arrow}cZZ may be accessible at the CERN LHC if the mass of the lightest neutral Higgs boson lies in the narrow window 150 GeV{approx_lt}m{sub h}{approx_lt}200 GeV. {copyright} {ital 1998} {ital The American Physical Society}},
doi = {10.1103/PhysRevD.57.2957},
journal = {Physical Review, D},
number = 5,
volume = 57,
place = {United States},
year = {1998},
month = {3}
}