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1.
In this note,we discuss the cross-sections of the production of Υ particles in p-p collisions as color excited states in the Han-Nambu model.The results are consistent with present experiments. 相似文献
2.
GAO CHUNG-SHOU 《中国物理C(英文版)》1978,2(5):394-402
In this paper, the possibility that the newly discovered heavy particle γ (9.5) is a colour excited state of mesons in the SU(4)×S3α scheme of straton model is discussed. We point out that in the γ region, there are three colour excited states appearing as two peaks with mass difference about 0.5 GeV. The leptonic decays, hadronie decays, radiative decays, hadronic decays with electromagnetic interaction of the second order and the production behavior of γ are discussed. This model also predicts that many colour excited states of mesons accompanied with γ should exist with masses around 9.5 GeV and at least four weakly decaying particles should exist. 相似文献
3.
GAO CHUNG-SHOU 《中国物理C(英文版)》1978,2(4):311-317
In this paper, we discuss the nature of the newly discovered heavy particle Y(9.5). Five possibilities of experimental criteria are analysed. We show that if Y is a heavy photon, an intermediate boson, a bound state of straton-antistraton or a hadron without valence stratons, and all the Γee will differ by several orders of magnitude and can therefore be discriminated easily in e+ e-collision experiments. The width value Fee and its ratio of γ to γ' are not identical for the case of colour excited states of meson and the case of bound states of the new straton-antistraton. The masses of other existing new particles can also be predicted. In particular, the masses of weakly decaying heavy particles are not the same for these two cases, which may be regarded as a criterion to discriminate between these two cases. We have also discussed the main decaying properties of γ for these five possibilities. 相似文献
4.
5.
In this paper, we propose an SU(4)×S3a scheme of the Straton Model and discuss the classification of mesons. We suggest the possible existence of several colour excited states with masses around 2 GeV in companion with charm mesons. We also discuss the properties and the experimental behavior of these colour excited states, especially, the possible contribution of these states in several new phenomena. 相似文献
6.
ZHOU GUANG-ZHAO 《中国物理C(英文版)》1981,5(1):39-46
In this paper we discussed the following problems in the SU(3)×U(1) unified model proposed earlier: (ⅰ) Two possible choices of the Higgs fields and their comparison with the Weinberg-Salam model; (ⅱ) The form of the Higgs self potential and the realization of the spontaneous symmetry breaking; (ⅲ) The relation between the mass spectrum and the generalized Cabibbo mixing angles in a model with several generations of fermions. 相似文献
7.
HADRONIC PRODUCTION OF J/ψ、ψ′(3684) AND THE CONTENT OF THE CHARMED STRATONS IN THE SEA OF THE STRATONS
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Hadronic production of J/ψ、ψ′(3684) particles is discussed in this paper on thebasis of reference [1] after considering the massive effects of the charmed straton.The results of [1] are improved.With the aid of the decay of ψ″→DD and the effective coupling constant between ψ″(3772) and the charmed straton we estimate that the content of the charmed stratonin the sea of the stratons is 0.41% of the ordinary stratons at most. 相似文献
8.
ASYMPTOTIC FREEDOM AND THE WAVE FUNCTIONS AT THE ORIGIN AND THE ENERGY LEVELS OF THE J/ψ AND THEY
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Zhou Bang-rong 《中国物理C(英文版)》1980,4(1):93-102
On the basis of phenomenological quantum chromodynamics (QCD), a nonre-lativistic linear and Coulomb-like potential describtion of the strong interaction be-tween quarks is assumed and it is considered that the effective quark-gluon coup-ling constant approaches the asymptotically free limit of QCD. The cloice of thepotential parameters is so made as to fit the experimental values of the wave func-tions at the origin as well as the masses of the J/ψ and the γ Following the calcu-lation referring to the ψ′and the γ′, we acquire a consistent explanation for boththe relative values of the wave functions at the origin and the experimental mass asdifferences of these particles. 相似文献
9.
10.
XU De-Zhi 《中国物理C(英文版)》1983,7(1):13-19
In this paper we propose an SU(4)×SU(2)×U(1) unified model, in which the stratons and leptons of every generation belong to the same Multiplet, and the leptons will couple to the stratons. But this kind of coupling cannot cause the proton decay, and has only some effects in high energy scatterings. This model predicts the existense of two neutral intermediate bosons, instead of one, and the value of Weinberg angle to be sin2θw=0.25. The neutrinos have reasonable masses in the model. 相似文献
11.
On the basis of previous papers,this work discusses the theory of composite fields composed of colored stratons.Varicus equivalent representations of the S-matrix elements are given.The formulae for the transition matrix elements between states involving baryons in the theory of Straton Model are derived.Finally,the field- current relations are extended to spin 1/2 baryons and their applications are discussed. 相似文献
12.
In this Paper a calculable three-body T matrix with compact kernel is obtained by using multiplier's methods. The formulations for calculating the A(a, ax)B type three-body reaction trans-tion amplitudes are presented when plane wave or distorted wave is used for the incident and outgoing states. This T matrix also includes the resonance terms of the three-body chain struc-ture states besides quasi-free scattering terms and final states interaction terms. A calculable formulation for the resonance energy of chain structure states is presented when it is expanded approximately into two two-body bound states. For 8Be and 6Li as target nuclei, the resonance energies are calculated. The results are in good agreement with the experimental values and the theoretical values of a mole-cule-like model. In order to check this kind of resonances, some experiments are proposed. 相似文献
13.
Zhang Jing-ye 《中国物理C(英文版)》1980,4(3):382-385
Some discussion is made for the angular momentum difference i(ω) introduced byA. Bohr and B. Mottelson. 相似文献
14.
SHEN WEN-GING XU SHU-WEI WANG DA-YAN XIE YUAN-XIANG GUO ZHONG-YAN LI ZU-YU 《中国物理C(英文版)》1977,1(1):70-78
The energy spectra and angular distributions of alpha particles emitted in the reaction of 12C on 209Bi in the energy range 61.1—73.0 MeV were observed.The △E— E detector system was used to separate alpha particles and other particles emitted in this reaction.The results can be interpreted in terms of the reaction mechanism,in which a 8Be cluster is transfered from the projectile to the target.Good agreement has been obtained between the cross section for the production of the direct alpha particles and that of the heavy residue 217*Fr which,left in the ground state after evaporation of 2 neutron's,decays into 211At by alpha emission.The experimental energy spectra and angular distributions have been fitted by a semi-classical formula for the differential cross section per unit solid angle and energy interval. 相似文献
15.
We discuss the suppression of the decay of heavy lepton τ into πvτ,by assuming that τ and/or vτ carry spin 3/2. For the case of spin 3/2 T and spin 1/2 vτ, using the weak current ψμ(τ)(a+bγ5)Ψ(vτ)we find that the πvτ decay channel relative to the vτvll-channel is suppressed 12/5 times, while other decay channels are not changed appreciably. △R=σ(e+e-→τ+τ-)/σ(e+e-→μ+μ-) is also discussed. 相似文献
16.
DISCUSSION OF A SU(2)×U(1)×S3 MODEL WITH TWO HIGGS DOUBLETS AND CALCULATION OF CABIBBO-LIKE-PARAMETERS
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In this paper a SU(2)×U(1)×S3 model with two Higgs doublets is discussed in detail. It is shown that besides the case discussed by Segre et al., there is another physically interesting case. We investigate the latter in detail. In This case, taking the quark masses and the Cabibbo angle θ1 as input parameters, we can obtain Cabibbo angles θ2 and θ3 which have the same order of magnitude as θ1. Finally the appearance of a pseudo Goldstone boson in the model is discussed, a method to overcome the difficulty is given, and the physical results of this case which do not contradict with the experiments are discussed. 相似文献
17.
THE SU2×SU2 BASIS AND THE PHYSICAL BASES FOR THE STATE VECTORS OF d-BOSON SYSTEMS AND THE TRACELESS BOSON OPERATORS (Ⅰ)
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The group chain U5O5SU2×SU2 used by K. T. Hecht (1965) and by the othersprovides an important representation for expressing the physical basis of d-boson sys-tems. However the methods which have been introduced for this SU2×SU2 representa-tion to construct a physical basis is poorer in comparison with those for the otherrepresentations. In view of this we try to find appropriate methods to obtain the SU2×SU2 representation wave functions of the existing physical bases constructed byChacon et al. and by Szpikowski et al., In the present paper we analyse the SU2×SU2 tensor properties of the,bosonoperators and Vilenkin's traceless boson operators and express succinctly the elementaryvectors of the SU2×SU2 basis, the |PP SU2×SU2 > vectors, in terms of the tracelessoperators. With the help of this form of the| PP SU2 SU2> vectors we derive a simpleformula for obtaining the SU2×SU2 -representation wave functions of a physical basisfrom its (nμ)-representation wave functions. Thus the problem mentioned above is partlysolved. The other parts of the solution of the problem will be found in a coming paper. 相似文献
18.
REN Jing-Ru KUANG Hao-Huai HUO An-Xiang LU Sui-Ling SU Shi WANG Yun-Xin XUE Yong-Gui WANG Cheng-Rui HE Mao ZHANG Nai-Jian CAO Pei-Yuan LI Jin-Yu BAI Guang-Zhi LIU Zhong-He LI Guang-Ju GENG Qing-Xi WANG Shi-Zhi ZHOU Wen-De HE Ren-Dao 《中国物理C(英文版)》1985,9(5):635-640
The preliminary results of big family events obtained by emulsion chamber experiment at Mt. Kanbala are presented. General feature of γ-ray familes with ΣEγ≥1000TeV are discussed and compared with the Monte Calo simulation. 相似文献
19.
秦达华 《声学学报:英文版》1987,(4)
Measured results and statistical analyses of traffic noise near the road intersections with traffic controlsignals are presented.It was found that the traffic noise near intersections is 3 to 7 dB(A)higher than the noiseof freely flowing road traffic in statistical noise levels L_(50) and L_(90),but no signifcant difference in L_(10) andequivalent continuous noise level L_(eq). The reason of higher L_(50) near intersections is considered to be due to the contribution to the total noiseenergy by the moving traffic in the crossing road,after comparing the neasured value of L_(50) with thecalculated result based on a simple source model of road intersections. The traffic noise level was not found to vary with the traffic signals. 相似文献
20.
WU Dan-Di 《中国物理C(英文版)》1985,9(3):362-366
We analyse the necessity and possibility of introducing an axial vector piece into the effective potential in order to cancel the spin-orbit interactions and the problems related thereby.
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