arXiv subjects

A. Belkov

Publications and source records attributed to A. Belkov.

3 recordsLinked to original sources

arXiv2003

Studies of Angular Correlations in the Decays $B^0_s\to J/ψϕ$ by Using the SIMUB Generator

The performance of the method of angular moments on the $ΔΓ_s$ determination from analysis of untagged decays $B^0_s(t),\bar{B}^0_s(t)\to J/ψ(\to l^+l^-) ϕ(\to K^+K^-)$ is examined by using the SIMUB generator. The results of Monte Carlo studies with evaluation of measurement errors are presented. The method of angular moments gives stable results for the estimate of $ΔΓ_s$ and is found to be an efficient and flexible tool for the quantitative investigation of the $B^0_s\to J/ψϕ$ decay. The statistical error of the ratio $ΔΓ_s/Γ_s$ for values of this ratio in the interval [0.03, 0.3] was found to be independent on this value, being 0.015 for $10^5$ events.

hep-ph↗

arXiv2003

On the Charge Asymmetry of the Like-Sign Lepton Pairs Induced by $B-\bar{B}$ Production Asymmetry

In Monte Carlo simulation of $pp$ and $pn$ interactions, it is shown that the charge asymmetry of like-sign lepton pairs can be observed as a manifestation of $B-\bar{B}$ production asymmetry. In this way, the $B-\bar{B}$ production asymmetry could be studied experimentally without full reconstruction of $B$-mesons.

hep-ph↗

arXiv2002

SIMUB -- a Monte Carlo Generator for Physics Simulation of B Decays

We present the SIMUB package developed at Dubna for MC generation of B meson production and decays. The starting version of the package includes lepton modes of B decays, in particular, semileptonic decays B->D^*lνand "golden" mode B->J/ψ(μμ)ϕ(KK) with taking into account all theoretical refinements including B^0-Bbar^0 oscillations and angular correlations.

hep-ph↗