Measurement of singly Cabibbo-suppressed decays $D \to \omega \pi \pi$ - INSPIRE

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Measurement of singly Cabibbo-suppressed decays $D \to \omega \pi \pi$

BESIII

Collaboration

Jul 6, 2020

12 pages

Published in:

Phys.Rev.D 102 (2020) 5, 052003

Published: Sep 10, 2020

e-Print:

2007.02542 [hep-ex]

DOI:

10.1103/PhysRevD.102.052003

PDG:

{{\mathit D}^{+}}

\rightarrow

{{\mathit \eta}}{{\mathit \pi}^{+}}{{\mathit \pi}^{0}}

Report number:

BAM-0371

Experiments:

BEPC-BES-III

View in:

ADS Abstract Service

reference search2 citations

Citations per year

Abstract: (APS)

Using 2.93 fb-1 of e+e- collision data taken at a center-of-mass energy of 3.773 GeV by the BESIII detector at the BEPCII, we measure the branching fractions of the singly Cabibbo-suppressed decays D→ωππ to be B(D0→ωπ+π-)=(1.33±0.16±0.12)×10-3 and B(D+→ωπ+π0)=(3.87±0.83±0.25)×10-3, where the first uncertainties are statistical and the second ones systematic. The statistical significances are 12.9σ and 7.7σ, respectively. The precision of B(D0→ωπ+π-) is improved by a factor of 2.1 over prior measurements, and B(D+→ωπ+π0) is measured for the first time. No significant signal for D0→ωπ0π0 is observed, and the upper limit on the branching fraction is B(D0→ωπ0π0)<1.10×10-3 at the 90% confidence level. The branching fractions of D→ηππ are also measured and consistent with existing results.

Note:

11 pages, 5 figures and 4 tables, Submitted to PRD

14.40.Lb
13.25.Gv
13.60.Le
11.30.Hv
Particle Physics Experiments
electron positron: annihilation
electron positron: colliding beams
D0: rare decay
D0: hadronic decay
D+: rare decay

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