Rare decays of the Bs-meson into four charged leptons in the framework of the Standard Model

被引：1

作者：

Danilina, A., V ^{[1
,2
]}

Nikitin, N., V ^{[2
,3
,4
]}

机构：

[1] Skobeltsyn Inst Nucl Phys, Moscow, Russia

[2] Kurchatov Inst, ITEP, NRC, Moscow, Russia

[3] Lomonosov Moscow State Univ, Phys Fac, Moscow, Russia

[4] Moscow Inst Phys & Technol, Dolgoprudnyi, Moscow Region, Russia

来源：

PHYSICA SCRIPTA | 2022年 / 97卷 / 07期

基金：

俄罗斯科学基金会;

关键词：

Standard Model; rare decays; B; -; mesons; particle physics; charged leptons;

D O I：

10.1088/1402-4896/ac7422

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

In the framework of the Standard Model we present new theoretical predictions for the branching ratios, double and single differential distributions and forward-backward leptonic asymmetries for the (B) over bar (s) -> mu(+)mu(-)e(+)e(-) decay. In our consideration we take into account the phi(1020)-resonance contribution; the main contributions of four charmonium resonances : psi(3770), psi(4040), psi(4160) and psi(4415); u (u) over bar -resonant contribution from rho(770) and omega(782); 'tails' contributions from J/psi and psi(2S) resonances; non-resonant contribution of the b (b) over bar - pairs, bremsstrahlung and the contribution of the weak annihilation. We provide the prediction for the branching ratio of (B) over bar (s) -> mu(+)mu(-)e(+)e(-) decay with and without the phi(1020)-resonance contribution. We use the model of vector meson dominance (VMD) for calculation of resonances contributions and take into account all substantive terms in (B) over bar (s) -> mu(+)mu(-)e(+)e(- )amplitude that was not considered in the previously papers.

引用

页数：13

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