Observation of $B_s^0 \to \overline{D}^{*0} \phi$ and search for $B^0 \to \overline{D}^0 \phi$ decays - INSPIRE

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Observation of $B_s^0 \to \overline{D}^{*0} \phi$ and search for $B^0 \to \overline{D}^0 \phi$ decays

LHCb

Collaboration

Jul 5, 2018

10 pages

Published in:

Phys.Rev.D 98 (2018) 7, 071103

Published: Oct 30, 2018

e-Print:

1807.01892 [hep-ex]

DOI:

10.1103/PhysRevD.98.071103

PDG:

{{\mathit B}^{0}}

\rightarrow

{{\overline{\mathit D}}^{0}}{{\mathit \phi}}

Report number:

LHCb-PAPER-2018-015,
CERN-EP-2018-158,
LHCB-PAPER-2018-015

Experiments:

CERN-LHC-LHCb

View in:

reference search23 citations

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Abstract: (APS)

The first observation of the Bs0→D¯*0ϕ decay is reported, with a significance of more than seven standard deviations, from an analysis of pp collision data corresponding to an integrated luminosity of 3 fb-1, collected with the LHCb detector at center-of-mass energies of 7 and 8 TeV. The branching fraction is measured relative to that of the topologically similar decay B0→D¯0π+π- and is found to be B(Bs0→D¯*0ϕ)=(3.7±0.5±0.3±0.2)×10-5, where the first uncertainty is statistical, the second systematic, and the third from the branching fraction of the B0→D¯0π+π- decay. The fraction of longitudinal polarization in this decay is measured to be fL=(73±15±4)%. The most precise determination of the branching fraction for the Bs0→D¯0ϕ decay is also obtained, B(Bs0→D¯0ϕ)=(3.0±0.3±0.2±0.2)×10-5. An upper limit, B(B0→D¯0ϕ)<2.0 (2.3)×10-6 at 90% (95%) confidence level is set. A constraint on the ω-ϕ mixing angle δ is set at |δ|<5.2° (5.5°) at 90% (95%) confidence level.

Note:

All figures and tables, along with any supplementary material and additional information, are available at https://lhcbproject.web.cern.ch/lhcbproject/Publications/LHCbProjectPublic/LHCb-PAPER-2018-015.html

p p: colliding beams
B/s0: hadronic decay
B0: hadronic decay
B/s0: branching ratio: measured
B0: branching ratio: upper limit
branching ratio: ratio
polarization: longitudinal
p p: scattering
vector meson: mixing angle
omega(783)

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