[SUNY BING 2/9/04] hep-ph/0402255 ON AN INTENSITY-RATIO EQUIVALENCE-THEOREM FOR TOP QUARK DECAY
نویسنده
چکیده
For the t → W+b decay mode, an intensity-ratio equivalence-theorem for two Lorentzinvariant couplings is shown to be related to symmetries of tWb-transformations. Explicit tWb-transformations, A+ = M ASM , P ASM , B ASM relate the four standard model’s helicity amplitudes, ASM (λW+, λb), and the amplitudes A+ (λW+, λb) in the case of an additional tR → bL weak-moment of relative strength Λ+ = EW/2 ∼ 53GeV . Two commutator plus anti-commutator symmetry algebras are generated fromM,P,B. These transformations enable a characterization of the associated mass scales.
منابع مشابه
[SUNY BING 10/24/04] hep-ph/0400000 ON AN INTENSITY-RATIO EQUIVALENCE FOR TWO TOP-QUARK DECAY COUPLINGS
For the t → W+b decay mode, an intensity-ratio equivalence for two distinct Lorentzinvariant couplings is shown to be a consequence of symmetries of tWb-transformations. Explicit tWb-transformations, A+ = M ASM , P ASM , B ASM connect the four standard model’s (SM) helicity amplitudes, ASM (λW+, λb), and the amplitudes A+ (λW+ , λb) in the case of an additional chiral-tensorial-coupling of rela...
متن کامل[SUNY BING 7/2/00] hep-ph/0007086 ON MEASUREMENT OF HELICITY PARAMETERS IN TOP QUARK DECAY
To enable an evaluation of future measurements of the helicity parameters for t → W+b decay in regard to T̃FS violation, this paper considers the effects of an additional pure-imaginary coupling, igi/2Λi or igi, associated with a specific, single additional Lorentz structure, i = S,P, S ± P, . . .. Sizable T̃FS violation signatures can occur for low-effective mass scales ( < 320GeV ), but in most...
متن کامل[SUNY BING 12/22/00 I] hep-ph/0101303 USE OF Λb POLARIMETRY IN TOP QUARK SPIN-CORRELATION FUNCTIONS
Due to the absence of hadronization effects and the large mt mass, top quark decay will be uniquely sensitive to fundamental electroweak physics at the Tevatron, at the LHC, and at a future linear collider. A “complete measurement” of the four helicity amplitudes in t → W+b decay is possible by the combined use of Λb and W polarimetry in stage-two spincorrelation functions (S2SC). In this paper...
متن کامل[SUNY BING 5/21/01R3 ] hep-ph/010638 THREE NUMERICAL PUZZLES AND THE TOP QUARK’S CHIRAL WEAK-MOMENT
Versus the standard model’s t → W+b decay helicity amplitudes, three numerical puzzles occur at the 0.1% level when one considers the amplitudes in the case of an additional “(fM + fE)” coupling of relative strength Λ+ ∼ 53GeV . The puzzles are theoretical ones which involve the t → W+b decay helicity amplitudes in the two cases, the relative strength of the additional (fM + fE) coupling, and t...
متن کامل[SUNY BING 5/21/01R2 ] hep-ph/010638 THREE NUMERICAL PUZZLES AND THE TOP QUARK’S CHIRAL WEAK-MOMENT
Versus the standard model’s t → W+b decay helicity amplitudes, three numerical puzzles occur at the 0.1% level when one considers the amplitudes in the case of an additional “(fM + fE)” coupling of relative strength Λ+ ∼ 53GeV . The puzzles are theoretical ones which involve the t → W+b decay helicity amplitudes in the two cases, the relative strength of the additional (fM + fE) coupling, and t...
متن کامل