TY  - SER
AU  - Achasov,M.N.
AU  - Ahmed,S.
AU  - Chelkov,G.A.
AU  - Ablikim,M.
TI  - Evidence for the singly Cabibbo suppressed decay Λc+ →pη and search for Λc+ →pπ0
KW  - BESIII, детектор
KW  - BEPCII, коллайдер
KW  - Каббибо подавленные распады
KW  - статьи в журналах
N1  - Библиогр.: 28 назв
N2  - We study the singly Cabibbo suppressed decays Λ+c→pη and Λ+c→pπ0 using Λ+c¯Λ−c pairs produced by e+e− collisions at a center-of-mass energy of √s=4.6 GeV. The data sample was collected by the BESIII detector at the BEPCII collider and corresponds to an integrated luminosity of 567 pb−1. We find the first evidence for the decay Λ+c→pη with a statistical significance of  4.2 σ and measure its branching fraction to be  B(Λ+c→pη=(1.24± 0.28(stat)±0.10(syst))×10−3. No significant Λ+c→pπ0 signal is observed. We set an upper limit on its branching fraction B(Λ+c→pπ0)<2.7×10−4 at the 90% confidence level
UR  - http://vital.lib.tsu.ru/vital/access/manager/Repository/vtls:000644728
ER  -