منابع مشابه
Rare and Forbidden Decays of D Mesons
D. A. Sanders, E. M. Aitala, S. Amato, J. C. Anjos, J. A. Appel, D. Ashery, S. Banerjee, I. Bediaga, G. Blaylock, S. B. Bracker, P. R. Burchat, R. A. Burnstein, T. Carter, H. S. Carvalho, N. K. Copty, L. M. Cremaldi, C. Darling, K. Denisenko, S. Devmal, A. Fernandez, G. F. Fox, P. Gagnon, C. Gobel, K. Gounder, A. M. Halling, G. Herrera, G. Hurvits, C. James, P. A. Kasper, S. Kwan, D. C. Langs, ...
متن کاملPerturbative QCD forbidden charmonium decays and gluonia.
We address the problem of observed charmonium decays which should be forbidden in perturbative QCD. We examine the model in which these decays proceed through a gluonic component of the J/Ψ and the ηc, arising from a mixing of (cc̄) and glueball states. We give some bounds on the values of the mixing angles and propose the study of the pp̄ → φφ reaction, at √s ≃ 3 GeV, as an independent test of t...
متن کاملRevisiting the OZI-forbidden Radiative Decays of Orthoquarkonia∗
It is interesting to investigate the OZI-forbidden radiative orthoquarkonium decays J/ψ → γπ, γη and γη in perturbative QCD. In this work without the approximations adopted in literature we carry out a full one-loop calculation which involves integrations of 4-point and 5-point loop functions. Our numerical results are in agreement with the present data. We also briefly discuss the decays of J/...
متن کاملThree-dimensional beta shapes
The Voronoi diagram of a point set has been extensively used in various disciplines ever since it was first proposed. Its application realms have been even further extended to estimate the shape of point clouds when Edelsbrunner and Mücke introduced the concept of α-shape based on the Delaunay triangulation of a point set. In this paper, we present the theory of β-shape for a set of three-dimen...
متن کاملBeta and gamma decays
1 Simple Fermi theory of beta decay 2 Beta decay is one of the most easily found kinds of radioactivity. As we have seen, this result of the weak interaction leads to conversion of a neutron into a proton or vice versa, with the necessary charge change being made possible by the emission of a positive or negative beta particle (positron or electron). To ensure conservation of lepton number, eac...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: International Journal of Modern Physics A
سال: 2018
ISSN: 0217-751X,1793-656X
DOI: 10.1142/s0217751x1843008x