22 research outputs found
Determination of the neutron / gamma separation threshold on single crystals of stilbene
Section V. Equipment, Methods and Automation of Nuclear Experiments, Interaction of Nuclear Radiation with the Matter and Applications of Methods of Nuclear Physic
Anomalies in Weak Decays of Hadrons Containing a b Quark
A brief review of the current state of observed deviations of theoretical
predictions from experimental data in semileptonic decays of and
mesons is given. A theoretical analysis of these decays is carried out, taking
into account the effects of new physics, which appear due to the introduction
of new four-fermion operators, which are absent in the basis of the Standard
Model (SM) operators. The necessary form factors are calculated within the
framework of the covariant quark model developed in our papers.Comment: Contribution to: International Conference on Quantum Field Theory,
High-Energy Physics, and Cosmolog
The study of b-s anomaly decays in covariant quark model
The work is devoted to the study of b-s anomaly decays. We compute the relevant form factors in the framework of the covariant quark model with infrared confinement in the full kinematical momentum transfer region. The calculated form factors are used to evaluate branching fractions and polarization observables in the decay caused by the presence of the intermediate scalar and in the cascade decay . We compare the obtained results with available experimental data and the results from other theoretical approaches
Semileptonic decays of Bc mesons into charmonium states
In this work we study the semileptonic decays of Bc meson. We evaluated
Bc→ D
D
*
,
B
c
→
D
s
D
s
*
and
Bc→ηc→
J
/
ψ
transitions form factors in the full kinematical region within the covariant quark model. The calculated form factors are used to evaluate the semileptonic decays of Bc meson and it was defined ratios (Rηc , RJ/ψ, RD ,RD*) of the branching ratios, which will be hopefully tested on LHC experiments.We compare the obtained results with the results from other theoretical approaches
Semileptonic decays of
In this work we study the semileptonic decays of Bc meson. We evaluated
Bc→ D
D
*
,
B
c
→
D
s
D
s
*
and
Bc→ηc→
J
/
ψ
transitions form factors in the full kinematical region within the covariant quark model. The calculated form factors are used to evaluate the semileptonic decays of Bc meson and it was defined ratios (Rηc , RJ/ψ, RD ,RD*) of the branching ratios, which will be hopefully tested on LHC experiments.We compare the obtained results with the results from other theoretical approaches