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Nuovo Cimento Della Societa Italiana Di Fisica A-nuclei Particles and Fields | 1986

Phenomenological consequences of a bound state of weak vector bosons

M. Hayashi; K. Yamagishi

SummaryA bound-state S= (VLVL), formed out of the strongly interacting longitudinal component of weak gauge bosons V= W±, Z0, which has been proposed by Veltman in the attempt to interpret the anomalous γll events observed at CERN SppS-collider, is studied phenomenologically. Adopting the nonrelativistic bound-state formalism we derive the effective couplings of Sff, Sγγ and SγZ0 and study the decay of the S-boson into various channels. The S may have a strong effective coupling to a heavy quark SUŪ, or to a heavy lepton SLL if there exists a heavy-quark pair (U, D), or a heavy-lepton pair (ΝL,L), satisfying the mass relation mu2- mD2, ≅ MW2, or


Physical Review D | 1982

Angular distributions of high-mass dileptons in high-energy hadronic collisions

M. Chaichian; M. Hayashi; K. Yamagishi


Physical Review D | 1985

Angular distributions in anomalous l/sup +/l/sup -/. gamma. events

M. Chaichian; M. Hayashi; K. Yamagishi

m_L^2 - m_{v_L }^2 \simeq M_W^2


Physical Review D | 1981

Angular Distributions of High Mass Dileptons With Finite Transverse Momentum in High-energy Hadronic Collisions

M. Chaichian; M. Hayashi; K. Yamagishi


Physical Review D | 1982

Effects of soft-gluon emission on the angular distributions of high-mass dileptons

M. Chaichian; M. Hayashi; K. Yamagishi

, respectively. If such a relation does not hold the S decays dominantly into the γγ(Z0) channel. Some production cross-sections at the future collider experiments are estimated.RiassuntoSi studia fenomenologicamente uno stato legato S = (VLVL), formato dalla componente longitudinale fortemente interagente dei bosoni deboli di gauge V=W±, Z0, proposto da Veltman nel tentativo d’interpretare gli eventi anomali γγll osservati al collider SppS del CERN. Adottando il formalismo non relativistico dello stato legato si derivano gli accoppiamenti efflcaci di Sff, Sγγ e SγZ0 e si studia il decadimento del bosone S nei vari canali. S puÒ avere un accoppiamento forte efficace con un quark pesante SUŪ o con un leptone pesante SLL se esiste una coppia di quark pesanti (U, D) o una coppia di leptoni pesanti (ΝL, L) che soddisfano rispettivamente la relazione di massa mU2- mD2 ≅ MW2, o


Physical Review D | 1984

ANGULAR DISTRIBUTIONS IN ANOMALOUS lepton+ lepton- gamma EVENTS

M. Chaichian; M. Hayashi; K. Yamagishi


Physical Review D | 1985

Angular distributions in anomalous l+l-? events

M. Chaichian; Masaki Hayashi; K. Yamagishi

m_L^2 - m_{v_L }^2 \simeq M_W^2


Nuovo Cimento Della Societa Italiana Di Fisica A-nuclei Particles and Fields | 1985

Соударения поляриэованных адронов: квантовая хромо динамика и проверка злектрослабых калибровочных моделей

M. Chaichian; Masaki Hayashi; K. Yamagishi; Jacques Soffer


Nuovo Cimento Della Societa Italiana Di Fisica A-nuclei Particles and Fields | 1983

УглОВыЕ РАспРЕДЕлЕН Иь АДРОННОИ стРУИ, ОБР АжОВАННОИ пРИ РАспАДЕ W БОжОНА, ИМЕУЩЕгО кОНЕЧНыИ пО пЕРЕЧНыИ ИМпУльс

Masaki Hayashi; Saburo Homma; K. Yamagishi

. Se quella relazione non vale S decadono prevalentemente nel canale γγ(Z0). Si stimano alcune sezioni d’urto di produzione per esperimenti futuri del collider.


Nuovo Cimento Della Societa Italiana Di Fisica A-nuclei Particles and Fields | 1971

Феноменологическая модель раэреэов Редже, основанная на технике реджеонных диаграмм. Качественное рассмотрение

Tsutomu Kobayashi; K. Yamagishi

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