Publications by authors named "V A Khachatryan"
Article Synopsis
- The study investigates the processes e^{+}e^{-}→D_{s}^{+}D_{s1}(2536)^{-} and e^{+}e^{-}→D_{s}^{+}D_{s2}^{*}(2573)^{-} using data from the BESIII detector, focusing on a range of center-of-mass energies.
- For the first time, the absolute branching fractions of the decay processes for D_{s1}(2536)^{-} and D_{s2}^{*}(2573)^{-} are measured, revealing values of 35.9% and 37.4% respectively.
- The research identifies a resonant structure around 4.6 Ge
Article Synopsis
- Scientists used special data from a detector to look for rare particle decays of a type called the D_{s}^{+} decay, focusing on how it might change into other particles like kaons or pions.
- They found strong evidence for the decay D_{s}^{+}→π^{+}ϕ and also discovered a new decay D_{s}^{+}→ρ^{+}ϕ, both involving particles that decay into pairs of electrons.
- However, they didn't find strong signals for three other types of decays they were looking for, and set limits on how often those changes could happen.
Strong and Weak CP Tests in Sequential Decays of Polarized Σ^{0} Hyperons.
Phys Rev Lett
September 2024
Article Synopsis
- The study investigates the J/ψ and ψ(3686) decays into Σ^{0}Σ[over ¯]^{0} processes using data from the BESIII detector, which has extensive datasets.
- It presents the first measurements of parity-violating decay parameters for Σ^{0} and Σ[over ¯]^{0}, suggesting implications for strong CP symmetry through their asymmetries.
- The findings include the observation of opposite transverse polarizations of Σ^{0} hyperons in these decays and the ratio of S-wave to D-wave contributions, contributing valuable insights into charmonium state dynamics.
Optic canal stenosis in Crouzon syndrome: a case report and literature review.
Zh Vopr Neirokhir Im N N Burdenko
August 2024
Article Synopsis
- Crouzon syndrome, which affects 1 in 25,000-31,000 newborns, is rarely linked with optic canal stenosis, a condition that can affect vision.
- A 6-year-old boy with Crouzon syndrome underwent multiple surgeries but experienced worsening vision, leading to the discovery of optic canal stenosis via MRI and confirmed by 3D CT.
- After surgical decompression of the optic canals, the patient's vision improved, suggesting that addressing optic canal stenosis can be beneficial even after prolonged symptoms.
Using data samples collected with the BESIII detector operating at the BEPCII storage ring, the cross section of the inclusive process e^{+}e^{-}→η+X, normalized by the total cross section of e^{+}e^{-}→hadrons, is measured at eight center-of-mass energy points from 2.0000 to 3.6710 GeV.
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