Accurate determination of sin sup 2. theta. sub W ( m sub Z )

Journal Article · Sun Dec 31 23:00:00 EST 1989 · Physical Review, D (Particles Fields); (USA)

DOI:https://doi.org/10.1103/PhysRevD.41.319· OSTI ID:7162435

Fanchiotti, S; Sirlin, A ^[1]

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1. Department of Physics, New York University, New York, New York 10003 (US)

A radiative correction {Delta}{cflx {ital r}}{sub {ital W}} linking directly the {ovr MS} (modified minimal-subtraction scheme) parameter sin{sup 2}{cflx {theta}}{sub {ital W}}({ital m{sub Z}}) to {ital G}{sub {mu}}, {alpha}, and {ital m}{sub {ital W}} is introduced. Its dependence on {ital m}{sub {ital t}} and {ital m}{sub {ital H}} is very weak. Employing {ital m}{sub {ital W}}=80.11{plus minus}0.31 GeV (obtained from the direct and {ital R}{sub {nu}} measurements of {ital m}{sub {ital W}}/{ital m{sub Z}} in conjunction with {ital m}{sub {ital Z}}) and allowing the range 78{le}{ital m}{sub {ital t}}{le}200 GeV, 10 GeV{le}{ital m}{sub {ital H}}{le}1 TeV leads to sin{sup 2}{cflx {theta}}{ital {sub W}}({ital m{sub Z}}) =0.2327{plus minus}0.0018{plus minus}0.0007 (the first error arises from {ital m}{sub {ital W}}, the second reflects the {ital m}{sub {ital t}},{ital m}{sub {ital H}} uncertainty), in very good agreement with the corresponding value sin{sup 2}{cflx {theta}}{ital {sub W}}({ital m{sub Z}}) =0.2327{plus minus}0.0012 {plus minus}0.0021 obtained from {ital m}{sub {ital Z}}. Implications for the {ital Z}{sup 0} asymmetries and the possible use of the {ital m}{sub {ital W}} determination in extensions of the standard model involving Higgs triplets are outlined.

• OSTI ID: 7162435
• Journal Information: Physical Review, D (Particles Fields); (USA), Journal Name: Physical Review, D (Particles Fields); (USA) Vol. 41:1; ISSN PRVDA; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

645202* -- High Energy Physics-- Particle Interactions & Properties-Theoretical-- Electromagnetic Interactions & Properties
645400 -- High Energy Physics-- Field Theory
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ASYMMETRY
BOSONS
CHARGE RENORMALIZATION
CORRECTIONS
ELEMENTARY PARTICLES
ENERGY
HIGGS BOSONS
HIGGS MODEL
INTERMEDIATE BOSONS
INTERMEDIATE VECTOR BOSONS
MASS
MATHEMATICAL MODELS
PARTICLE MODELS
POSTULATED PARTICLES
RADIATIVE CORRECTIONS
RENORMALIZATION
SELF-ENERGY
STANDARD MODEL
UNIFIED GAUGE MODELS
Z NEUTRAL BOSONS