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408 papers · 1 filter
Perturbative QCD fitting of KEDR and BESIII data for R(s) and determination
A. L. Kataev, K. Yu. Todyshev
The experimental data collected by KEDR and BESIII collaborations at the energies below charm quark thresholds are compared with the massless QCD expressions for the annih…
Charge asymmetry in processes in the vicinity of
S. G. Salnikov, A. I. Milstein
The effects of isotopic invariance violation in the processes , , and are considered in the ene…
Relativistic effects in heavy mesons
I. V. Obraztsov, A. E. Bondar, A. I. Milstein
We discuss the application of a relativistic potential model to the description of the spectrum and radiative transitions in mesons containing at least one heavy quark (b or c). Al…
Charge asymmetry in the process
I. V. Obraztsov, A. S. Rudenko, A. I. Milstein
The charge asymmetry in the process is studied for photons with energies . The longitudinal polarization of electrons (positrons) is taken into…
Phenomenology of mesons radiative transitions
A. E. Bondar, A. I. Milstein
We discuss radiative transitions and of -wave mesons. Since mesons have no a certain -parity, and the masses of q…
NGAMMA: A Monte Carlo generator for multiphoton production in annihilation
L. V. Kardapoltsev, N. A. Melnikova
We present the NGAMMA Monte Carlo event generator for QED processes of annihilation into a multiphoton final state, . These processes are an importa…