Probing strongly-interacting electroweak dynamics through W{sup +}W{sup {minus}}/ZZ ratios at future e{sup +}e{sup {minus}} colliders

Technical Report · Sun Jan 01 00:00:00 EST 1995

DOI:https://doi.org/10.2172/28359· OSTI ID:28359

Barger, V ^[1]; Cheung, K ^[2]; Han, T ^[3]; Phillips, R J.N. ^[4]

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1. Univ. of Wisconsin, Madison, WI (United States). Physics Dept.
2. Univ. of Texas, Austin, TX (United States). Center for Particle Physics
3. Univ. of California, Davis, CA (United States). Physics Dept.
4. Rutherford Appleton Lab., Chilton (United Kingdom)

The authors point out that the ratio of W{sup +}W{sup {minus}} {yields} W{sup +}W{sup {minus}} and W{sup +}W{sup {minus}} {yields} ZZ cross sections is a sensitive probe of the dynamics of electroweak symmetry breaking, in the CM energy region {radical}s{sub ww} {approx_gt} 1 TeV where vector boson scattering may well become strong. They suggest ways in which this ratio can be extracted at a 1.5 TeV e{sup +}e{sup {minus}} linear collider, using W{sup {+-}}, Z {yields} jj hadronic decays and relying on dijet mass resolution to provide statistical discrimination between W{sup {+-}} and Z. WW fusion processes studied here are unique for exploring scalar resonances of mass about 1 TeV and are complementary to studies via the direct channel e{sup +}e{sup {minus}} {yields} W{sup +}W{sup {minus}} for the vector and non-resonant cases. With an integrated luminosity of 200 fb{sup {minus}1}, the signals obtained are statistically significant. Comparison with a study of e{sup {minus}}e{sup {minus}} {yields} {nu}{nu}W{sup {minus}}W{sup {minus}} process is made. Enhancements of the signal rate from using a polarized electron beam, or at a 2 TeV e{sup +}e{sup {minus}} linear collider and possible higher energy {mu}{sup +}{mu}{sup {minus}} colliders, are also presented.

• Research Organization: Texas Univ., Austin, TX (United States). Center for Particle Physics; California Univ., Davis, CA (United States). Dept. of Physics; Wisconsin Univ., Madison, WI (United States). Dept. of Physics
• Sponsoring Organization: USDOE, Washington, DC (United States)
• DOE Contract Number: FG03-93ER40757; FG03-91ER40674; FG02-95ER40896
• OSTI ID: 28359
• Report Number(s): DOE/ER/40757-061; UCD-95-2; RAL-95-003; ON: DE95007202; IN: MADPH-95-865; CPP-95-1; hep-ph/9501379; TRN: 95:008282
• Resource Relation: Other Information: PBD: Jan 1995
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
W MINUS BOSONS
HADRONIC PARTICLE DECAY
W PLUS BOSONS
Z NEUTRAL BOSONS
ELECTRON-POSITRON INTERACTIONS
FINAL-STATE INTERACTIONS
WEINBERG-SALAM GAUGE MODEL
SYMMETRY BREAKING
PARTICLE PRODUCTION
COMPARATIVE EVALUATIONS
PROBES
LEPTONIC DECAY
BRANCHING RATIO
PARTICLE DISCRIMINATION
ANNIHILATION
PARTICLE KINEMATICS