arXiv subjects

Tetiana Berger-Hryn'ova

Publications and source records attributed to Tetiana Berger-Hryn'ova.

2 recordsLinked to original sources

arXiv2005

Searches for Pentaquark Baryons at BaBar

This paper presents the results of inclusive searches for the strange pentaquark states $Θ^+(1540)$, $Ξ_5^{--}(1860)$ and $Ξ_5(1860)^{0}$ as well as the anti-charm pentaquark state $Θ_c(3099)^{0}$ in a dataset of 123.4 fb$^{-1}$ collected on and 40$ $MeV below the $Υ(4S)$ resonance by the BABAR detector at the $e^+e^-$ PEPII storage rings. No evidence for the pentaquark states is found and upper limits on the rate of $Θ^+(1540)$ and $Ξ_5^{--}(1860)$ production in $e^+e^-$ annihilation are obtained.

hep-ex↗

arXiv2004

A Study of B+->p pbar K+ and a Search for a Theta*++ Pentaquark Candidate in B Decay

A study of the decay B+->ppbarK+ is performed using 81fb-1 of data collected at the Upsilon(4S) with the BaBar detector at PEP-II. The branching fraction of B+->ppbarK+ is measured to be (6.7+/-0.9+/-0.6)x10^-6. An upper limit on the branching fraction of B+->Theta*++pbar, where Theta*++ is a narrow state decaying to pK+, is set to be 1.5x10^-7 for 1.43<m(Theta*++)<1.85GeV/c^2 at 90% confidence level. All results are preliminary.

hep-ex↗