Observation of $D^+_s\rightarrow p\bar{n}$ and confirmation of its large branching fraction - INSPIRE

DataBETA

Observation of $D^+_s\rightarrow p\bar{n}$ and confirmation of its large branching fraction

BESIII

Collaboration

Nov 2, 2018

8 pages

Published in:

Phys.Rev.D 99 (2019) 3, 031101

Published: Feb 16, 2019

e-Print:

1811.00752 [hep-ex]

DOI:

10.1103/PhysRevD.99.031101

PDG:

{{\mathit D}_{{{s}}}^{+}}

\rightarrow

{{\mathit p}}{{\overline{\mathit n}}}

Experiments:

BEPC-BES-III

View in:

ADS Abstract Service

reference search15 citations

Citations per year

Abstract: (APS)

The baryonic decay Ds+→pn¯ 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.

electron positron: annihilation
electron positron: colliding beams
D/s+: pair production
charmed meson: pair production
D/s+: hadronic decay
D/s+: branching ratio: measured
charmed meson: decay
baryon: pair production
statistical
Beijing Stor

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