Observation of Ds+ →p n ̄ and confirmation of its large branching fraction

Belle Collaboration

Результат исследования: Научные публикации в периодических изданияхстатья

2 Цитирования (Scopus)

Аннотация

The baryonic decay Ds+→pn̄ is observed, and the corresponding branching fraction is measured to be (1.21±0.10±0.05)×10-3, where the first uncertainty is statistical and second systematic. The data sample used in this analysis was collected with the BESIII detector operating at the BEPCII e+e- double-ring collider with a center-of-mass energy of 4.178 GeV and an integrated luminosity of 3.19 fb-1. The result confirms the previous measurement by the CLEO Collaboration and is of greatly improved precision. This result will improve our understanding of the dynamical enhancement of the W-annihilation topology in the charmed meson decays.

Язык оригиналаанглийский
Номер статьи031101
Число страниц8
ЖурналPhysical Review D
Том99
Номер выпуска3
DOI
СостояниеОпубликовано - 15 фев 2019

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