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Observations concerning the magnitude of tt threshold effects on electroweak parameters

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Abstract

We discuss a recent analysis of t anti t threshold effects and its implications for the determination of electroweak parameters. We show that the new formulation, when applied to the {rho} parameter for m{sub t} {approx} 158 GeV, gives a result of similar magnitude to those previously obtained. In fact, it is quite close to our ``resonance`` calculation. We also present a simple estimate of the size of the threshold effects based on an elementary Bohr-atom model of t anti t resonances. (orig.)
Authors:
Kniehl, B A; [1]  Sirlin, A [2] 
  1. Hamburg Univ. (Germany). 2. Inst. fuer Theoretische Physik
  2. New York Univ., NY (United States). Dept. of Physics
Publication Date:
Dec 01, 1993
Product Type:
Technical Report
Report Number:
DESY-93-194; NYU-Th-93/12/01
Reference Number:
SCA: 662210; PA: DEN-94:0F7261; EDB-94:085043; ERA-19:019998; NTS-95:004793; SN: 94001208075
Resource Relation:
Other Information: PBD: Dec 1993
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; WEINBERG LEPTON MODEL; CORRECTIONS; ELECTROMAGNETIC INTERACTIONS; TOPONIUM; QUARKS; SU-2 GROUPS; UNIFIED GAUGE MODELS; WEAK INTERACTIONS; TOP PARTICLES; REST MASS; PERTURBATION THEORY; QUANTUM CHROMODYNAMICS; BOHR THEORY; STANDARD MODEL; U-1 GROUPS; PAIR PRODUCTION; 662210; UNIFIED THEORIES AND MODELS
OSTI ID:
10153419
Research Organizations:
Deutsches Elektronen-Synchrotron (DESY), Hamburg (Germany)
Country of Origin:
Germany
Language:
English
Other Identifying Numbers:
Journal ID: ISSN 0418-9833; Other: ON: DE94769085; TRN: DE94F7261
Availability:
OSTI; NTIS (US Sales Only); INIS
Submitting Site:
DEN
Size:
13 p.
Announcement Date:
Jul 06, 2005

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Citation Formats

Kniehl, B A, and Sirlin, A. Observations concerning the magnitude of tt threshold effects on electroweak parameters. Germany: N. p., 1993. Web.
Kniehl, B A, & Sirlin, A. Observations concerning the magnitude of tt threshold effects on electroweak parameters. Germany.
Kniehl, B A, and Sirlin, A. 1993. "Observations concerning the magnitude of tt threshold effects on electroweak parameters." Germany.
@misc{etde_10153419,
title = {Observations concerning the magnitude of tt threshold effects on electroweak parameters}
 author = {Kniehl, B A, and Sirlin, A}
 abstractNote = {We discuss a recent analysis of t anti t threshold effects and its implications for the determination of electroweak parameters. We show that the new formulation, when applied to the {rho} parameter for m{sub t} {approx} 158 GeV, gives a result of similar magnitude to those previously obtained. In fact, it is quite close to our ``resonance`` calculation. We also present a simple estimate of the size of the threshold effects based on an elementary Bohr-atom model of t anti t resonances. (orig.)}
 place = {Germany}
 year = {1993}
 month = {Dec}
 }