1987 Vol. 11, No. 6
Display Method: |
Abstract:
By Using the advantage that, in e+e-→heavy quark jets, quarks excited by electromagnetic interaction and that by strong interaction can be distinguished from each other, the production rule for the later is investigated. It is found that the number of the quark produced satisfies a simple universal rule, and the resulted, i> multiplicity distribution and forward-backwark correlation etc are all in agreement with experiment. The comparison of with the data is presented.
By Using the advantage that, in e+e-→heavy quark jets, quarks excited by electromagnetic interaction and that by strong interaction can be distinguished from each other, the production rule for the later is investigated. It is found that the number of the quark produced satisfies a simple universal rule, and the resulted
Abstract:
Experimental distributions of the charged multiplicity in e+e- annihilation are analysed. It is pointed out that the distribution is likely to be a superposition of the distribution of the number of quark-antiquark pairs, which is possibly a poissonian, and the distribution resulting from the quark combination. Calculations have been done by using a quark combination rule which is successful in many other aspects. The result is in agreement with the data. A special disscussion about the light quark jet events is also made.
Experimental distributions of the charged multiplicity in e+e- annihilation are analysed. It is pointed out that the distribution is likely to be a superposition of the distribution of the number of quark-antiquark pairs, which is possibly a poissonian, and the distribution resulting from the quark combination. Calculations have been done by using a quark combination rule which is successful in many other aspects. The result is in agreement with the data. A special disscussion about the light quark jet events is also made.
Abstract:
The exact results for the topological susceptibility and the mean value of the topological charge density in 1+1D lattice gauge theory are obtained by means of the Hamiltonian method.
The exact results for the topological susceptibility and the mean value of the topological charge density in 1+1D lattice gauge theory are obtained by means of the Hamiltonian method.
Abstract:
The magnetic bottle confining and compression for particle and antiparticle beams are studied. If the magnetic bottle is an axial symmetric and have a center plane and the radial decrease of its field is suitable, the confining will be stable. As the bottle field increasing the particle and antiparticle beam can le pressed in a small space space to produce controlled annihilation.
The magnetic bottle confining and compression for particle and antiparticle beams are studied. If the magnetic bottle is an axial symmetric and have a center plane and the radial decrease of its field is suitable, the confining will be stable. As the bottle field increasing the particle and antiparticle beam can le pressed in a small space space to produce controlled annihilation.
Abstract:
From the SN1987A neutrino lurst data, an integrated neutrino spectrum is deduced, which can be fitted by an exponent function, with kT of about 4.2MeV, corresponding to a primal mass10M⊙ of a supernova. If neutrino has a rest mass, the time order of reutrino emission is distinctively changed, from it we can primitively judge that the electron neutrino mass is less than 10eV.
From the SN1987A neutrino lurst data, an integrated neutrino spectrum is deduced, which can be fitted by an exponent function, with kT of about 4.2MeV, corresponding to a primal mass10M⊙ of a supernova. If neutrino has a rest mass, the time order of reutrino emission is distinctively changed, from it we can primitively judge that the electron neutrino mass is less than 10eV.
ISSN 1674-1137 CN 11-5641/O4
Original research articles, Ietters and reviews Covering theory and experiments in the fieids of
- Particle physics
- Nuclear physics
- Particle and nuclear astrophysics
- Cosmology
Author benefits
- A SCOAP3 participating journal - free Open Access publication for qualifying articles
- Average 24 days to first decision
- Fast-track publication for selected articles
- Subscriptions at over 3000 institutions worldwide
- Free English editing on all accepted articles
News
- Chinese Physics C Outstanding Reviewer Award 2023
- Impact factor of Chinese Physics C is 3.6 in 2022
- 2022 CPC Outstanding Reviewer Awards
- The 2023 Chinese New Year-Office closure
- ãChinese Physics CãBEST PAPER AWARDS 2022
Cover Story
- Cover Story (Issue 9, 2024) Measurement of solar pp neutrino flux using electron recoil data from PandaX-4T commissioning run
- Cover Story (Issue 11, 2024) ï½ Form factor for Dalitz decays from J/Ï to light pseudoscalars
- Cover Story (Issue 3, 2024) | First measurement of the ground-state mass of 22Al helps to evaluate the ab-initio theory
- Cover Story (Issue 2, 2024) | Quark/gluon taggers light the way to new physics
- Cover Story (Issue 8, 2024) | Applyingdeep learning technique to chiral magnetic wave search