No abstract

In this paper, we present a relativistically invariant formulation of the hadron electromagnetic and semilcptonic weak vertex function in the minimal boosted SU (6) model, that is, in the SU (6) 1r®O (3, 1) based on the relativistic quark model. The various form factors obtained from this model are compared with those given by the 11(12)®0(3, 1) model. It is also shown that existing experiments can be fairly well reproduced by the SU (Ci) ,' I®O (3, 1) rather than by the U (12) ®0 (3, 1). § l. IntroductionRecently Ishida, JVIatsuda and Namiki haYe presented a ne\V formulation for relativistic generalization of the SU(6) scheme, called SU(G) Jr, to formulate the spinor part of the hadron ~wave functions. 1 l The SU (6) Jr scheme was originally introduced by Fujimura, Kobayashi and Namiki"J in an intuitive way of formulating the relativistic wa\·e functions different from the U (12) scheme. One of the important results of the SU(6),1r(290(3, 1) model is that \YC can obtain electromagnetic form factors of the dipole type for nucleon and of the simple pole type for pion in good agreement \vith existing experimental results. Such q'-dependenccs of the form factors essentially come from the o\·erlapping integral o£ the inner orbital wave functions describing the Lorentz contraction effect as a dynamical result of the relativistic harmonic oscillator model with Takabayashi's subsidiary condition. 3 l In order to obtain the \Nhole scheme of form factors, however, we must formulate the spinor-unitary spinor part of the hadron wcn·e :functions and details of the current Ycrtex function, and examine the other multiplicative :factors of the form factors coming from them. The first attempt given by Fujimura, Kobayashi and Namiki is not so satisfactory as to the relati,-istic covariance and the gauge invanance. Feynman, Kisslinger and Ravndal proposed a method to give the relati,·istic covariant and gauge invariant current in the framework of U (12) (290 (3, 1) . 1 ) Along the same line o£ thought, BlagojeYic and Lalm·ic obtained the current Yertex function obeying the relativistic covariance and the gauge innuiance in the case of SU(6) ,,£(290( 3, 1) . 5 l It seems to us that the mathematical structure of

No abstract

1559T'he photodecay \viclth of "cjJ ~' parttcles into a p:cccuclosc:alar rneson i:-; theore1 ically investigated on the basiS of the relat1vist1c compusite part•cle mcxld. It is shown that the lurm factor effect given hy tlns model yields s1gnific.ant rccduct1on for the plvJtoclecay width of "¢'', because of large n1ass difference 1~<1 th1s pr::._;c8ss. By use of broken SU(4) SJnnJnetry scherne anc1 d1e above-n1entioned rnec:hanis:n, tlL: _phJtod=cay vviclths of variou::-; vector lne-:-;ons including "(jJ" particles an~ nurnerica1ly obtained. Thc~e resu1ts are 111 agrec1nent \Vi1h the present cxperirnental data. § l. Intrmh1ciionThe '\'/' particle phenomena have brought a new aspect into elementary partie le ph~-sics through their interesting features, abo,-e all, on their extreme l r narrow decay width. It would be true that the narrow 'viclth can be understood by the assumption of the iJr~c;~nee of ne\Y q1..nntum numbers (for cxcunple, the charm ntunber and s:J on) a>d lEW mec11cnisms (for example, the Okubo-Zweig-Iizuka rule and other,;), \Ve should ein-,;hasize th.c~ Ln"lTI narrow as pointed out by many 11l'lSS authors. Nevertheless, important oric:;in of the differeces in the decay -for "(j;''J.nrticles. Inde.c:cl, we c;ul hardly get reasonable photodecay widths m some model-theoretical prediction without resort to the form factor effect. The main purpose of this papec· is t-J sho\V tha: the form factor effect given bv a relatiYi"tic composit2 particle nnd:cl can giTe us reason,tble narrow photodecay "\vidths of particles.The present paper 1s clevehpcd on the lnsis of the following two assum.ptions in a composite model for "(//' particles. The first is that the inner orbit:-tl state of '\'/' particles can be described by t:1e relativistic harmonic oscillator wave hmctions originally introduced by Yukawan and Takabayasi.'l Such waYe functions are characterized by a sort of the Lorentz contraction caused by the centre-of-mass motion. The Lorentz contraction effect of the wave functions is considered to be an essential origin of the desirable "dipole" behavior of the nucleon electromagnetic form factors, as shown by Namiki and his colleagues. 3 l The wave function can at

This study investigated the factors related to the following three outcomes among authors who have This study investigated the factors related to the following three outcomes among authors who have submitted their articles to the Japanese Journal of Ergonomics: (1) Satisfaction; (2) Willingness; and (3) submitted their articles to the Japanese Journal of Ergonomics: (1) Satisfaction; (2) Willingness; and (3) Recommendation. An online survey was conducted among 124 corresponding authors who had submitted Recommendation. An online survey was conducted among 124 corresponding authors who had submitted articles to the journal in the past five years (66 respondents, response rate: 53.2％) . A 9-point Likert articles to the journal in the past five years (66 respondents, response rate: 53.2％) . A 9-point Likert scale was used for each outcome, which was re-categorized into three levels (low, medium, and high) scale was used for each outcome, which was re-categorized into three levels (low, medium, and high) and cross-tabulated with each factor. Fisher's exact test, Cramer's V for effect size, and multiple and cross-tabulated with each factor. Fisher's exact test, Cramer's V for effect size, and multiple correspondence analysis were used to evaluate the association. The results showed that the factors correspondence analysis were used to evaluate the association. The results showed that the factors common to the three outcomes were: the quality of the editor's comments ( common to the three outcomes were: the quality of the editor's comments ( ps ps＜0.01, V＝0.38-0.53, ＜0.01, V＝0.38-0.53, df df＝4) , ＝4) , the quality of the reviewer's comments ( the quality of the reviewer's comments ( ps ps ≤ ≤ 0.01, V＝0.31-0.40, 0.01, V＝0.31-0.40, df df＝4) , and the decision of acceptance/ ＝4) , and the decision of acceptance/ rejection ( rejection ( ps ps ≤ ≤ 0.01, V＝0.35-0.46, 0.01, V＝0.35-0.46, df df ＝4) . This study, thus, revealed the main factors involved in the ＝4) . This study, thus, revealed the main factors involved in the levels of satisfaction, willingness, and recommendation when submitting articles for publication in the levels of satisfaction, willingness, and recommendation when submitting articles for publication in the Japanese Journal of Ergonomics. Japanese Journal of Ergonomics.