Electron-positron annihilation into three jets in the integer-charge quark model

Rajasekaran, G.; Rindani, S.D.

doi:10.1016/0370-2693(80)90829-1

Cited by 8 publications

(6 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…(4)(5)(6)(7)(8) with M replaced by M + M', since the 1/mg 6 term has been shown to cancel in this limit. We find it useful to substitute for the products of the structure constants jij k in M (Eq.…”

Section: Inclusion Of Higgs Scalarsmentioning

confidence: 96%

“…We will sum over all colour states, hence we will take plP=pgJ=pgJ=Oii' . The leading term in L:podM + M'12 will then be T=I T=O (5)(6) We then find that the leading terms of order m/ in M and M' cancel, leaving the next-to-leading contribution to (M + M')ijp~PIap2PhP, going as mg 4 or m9 2 mH2.…”

Section: Inclusion Of Higgs Scalarsmentioning

confidence: 96%

“…energy H, but the Higgs-scalar masses (mH) much larger than Hand (ii) the gluon mass as well as the scalar masses small compared to H. The results arising from possibility (i) were reported earlier. 6 ) We present here details of that calculation as well as the calculation for the case (ii). Our conclusion is that in case (i), the possibility of observing three-gluon jets exists if my 2 /q2 < 10-2…”

Section: Integer-charged Quark Model and Electron-positron Annihilationmentioning

confidence: 99%

“…Since the actual amplitude we have to consider is M + M' and since both M~~~ and M~W have the same behaviour for mg, mH -> 0, we can write the expansion for L:poIIM + M'12 in powers of mg 2 /q2, mH2/q2 as in Eq. (4)(5)(6)(7)(8), with M replaced by M+M'. We will sum over all colour states, hence we will take plP=pgJ=pgJ=Oii' .…”

Section: Inclusion Of Higgs Scalarsmentioning

confidence: 99%

“…We first describe the transformation to the unitary gauge. To work in the unitary gauge, we define (2)(3)(4)(5)(6)(7)(8)(9)(10)(11)(12)(13) and at the same time redefine the gauge fields and the fermion fields by the corresponding gauge transformation, where Bl (/= 1, ··'8), Bu are real scalar fields with vanishing vacuum expectation value, and Pai satisfies…”

Section: Symmetry Breakingmentioning

confidence: 99%

See 4 more Smart Citations

Integer-Charged Quark Model and Electron-Positron Annihilation into Three Jets

Rajasekaran

Rindani

1982

Progress of Theoretical Physics

Self Cite

View full text Add to dashboard Cite

1505The consequences of the integer-charge quark model in electron-positron annihilation into three jets are studied. To first order in as, three-gluon jets also contribute, in addition to quarkantiquark-gluon jets. If the gluon-mass is smaller than about 2 GeV, these three-gluon jets can dominate at PETRA energies (~30 Ge V). The angular distribution is presented as a test to signal this three-gluon jet. If however, the coloured-Higgs intermediate states are taken into account, the three-gluon jet is no longer dominant and can easily escape detection. The model of broken colour symmetry, in which all these phenomena occur, is worked out explicitly. § 1. Introduction A number of recent experiments at PETRA have established evidence for three-jet events in electron-positron annihilation. I) These can be explained in terms of the production of a quark-antiquark pair (qq) accompanied by gluon (g) emission, on the basis of quantum chromo dynamics (QCD), the theory of strong interactions of fractionally charged quarks and neutral massless gluons based on an exact colour SU(3) gauge symmetry. Though the results are in agreement with QCD, there still does not exist a complete analysis which establishes that the underlying theory is indeed QCD and rules out other alternatives. We wish to discuss here the possibility that a model of strong interactions based on a broken colour SU(3) gauge symmetry incorporating the integer-charged quarks of Han and N ambu 2 ) and charged massive gluons, could give rise to the observed threejet events. We shall refer to this model with integer-charge quarks as the ICQ model, while the conventional QCD with fractional charge quarks will be called the FCQ model.It had been generally supposed that only the fractionally charged quarks of Gell-Mann and Zweig are in agreement with experimental data on deep inelastic lepton-hadron scattering as well as on hadron-production in e+ e~ annihilation, which probe the constituents of the nucleon. For instance, the very good agree-*) On leave

show abstract

Section: Inclusion Of Higgs Scalarsmentioning

confidence: 96%

Section: Inclusion Of Higgs Scalarsmentioning

confidence: 96%

Section: Integer-charged Quark Model and Electron-positron Annihilationmentioning

confidence: 99%

Section: Inclusion Of Higgs Scalarsmentioning

confidence: 99%