Study of noncollinear two-charged-particle events produced in 29-GeV electron-positron annihilation.
نویسندگان
چکیده
This paper presents a study of events produced in 29 GeV electron-positron annihilation in which there are just two non-collinear charged particles, no detected photons, and two or more undetected particles. These events can be explained by attributing them primarily to the reactions e+e+ e+e-e+eand e+e--+ e+e-p+pwhere just two particles appear in the Mark II detector. There is no evidence for unconventional sources for such events.
منابع مشابه
Searches for unstable neutral leptons in low-multiplicity events from electron-positron annihilation.
Upper limits are given on the production of unstable neutral leptons in electron-positron annihilation at 29 GeV. The searches use selected 2 and 4 charged particle events and are most sensitive to neutral lepton masses of the order of 1 GeV/c2 and smaller. However results are given for masses up to 14 GeV/c2.
متن کاملبررسی رویدادهای چند جتی در نابودی الکترون - پوزیترون
Analysis of electron – positron annihilation into hadrons in the range of energies above 60 GeV shows that apart from two jet events, there are evidence for three jet events that according to the QCD theory interpreted as a gluon radiation by a quark. However, the higher order diagrams lead to four jet events. In this paper, we study the fragmentation of quarks and gluons into hadronic jets . ...
متن کاملKNO scaling in processes of electron - positron annihilation to hadrons
The charged particles multiplicity distribution in the KNO form is discussed in processes of ee annihilation at energies √ s 14 – 206.2 GeV. The experimental data are compared to data, obtained with Monte Carlo simulation in PYTHIA in the Lund quark string model. It is shown, that both experimental and simulated data are described by the same distribution function in the KNO form. It is shown, ...
متن کاملPET Radiopharmaceuticals
PET (positron emission tomography) is a powerful imaging technique that can provide quantitative information on the distribution of positron emitter labeled radiopharmaceuticals (PET radiopharmaceuticals) in the body. Positrons (ß+) are positively charged beta particles. They are emitted when the atom is proton rich. A positron has only a transient existence. After losing all of its kinetic ene...
متن کاملPET Radiopharmaceuticals
PET (positron emission tomography) is a powerful imaging technique that can provide quantitative information on the distribution of positron emitter labeled radiopharmaceuticals (PET radiopharmaceuticals) in the body. Positrons (ß+) are positively charged beta particles. They are emitted when the atom is proton rich. A positron has only a transient existence. After losing all of its kinetic ene...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید
ثبت ناماگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید
ورودعنوان ژورنال:
- Physical review. D, Particles and fields
دوره 34 11 شماره
صفحات -
تاریخ انتشار 1986