First observation of the decay B-s(0) -> (KSK)-K-0*(892)(0) at LHCb
File(s)
Published version
Author(s)
Type
Journal Article
Abstract
A search for B0
(s) → K0
SK∗
(892)0 decays is performed using pp collision data,
corresponding to an integrated luminosity of 1.0 fb−1
, collected with the LHCb detector at
a centre-of-mass energy of 7 TeV. The B0
s → K0
SK∗
(892)0 decay is observed for the first
time, with a significance of 7.1 standard deviations. The branching fraction is measured
to be
B(B
0
s → K¯ 0K∗
(892)0
) + B(B
0
s → K0K¯ ∗
(892)0
) = (16.4 ± 3.4 ± 2.3) × 10−6
,
where the first uncertainty is statistical and the second is systematic. No evidence is found
for the decay B0 → K0
SK∗
(892)0 and an upper limit is set on the branching fraction,
B(B0 → K¯ 0K∗
(892)0
) + B(B0 → K0K¯ ∗
(892)0
) < 0.96 × 10−6
, at 90 % confidence level.
All results are consistent with Standard Model predictions.
(s) → K0
SK∗
(892)0 decays is performed using pp collision data,
corresponding to an integrated luminosity of 1.0 fb−1
, collected with the LHCb detector at
a centre-of-mass energy of 7 TeV. The B0
s → K0
SK∗
(892)0 decay is observed for the first
time, with a significance of 7.1 standard deviations. The branching fraction is measured
to be
B(B
0
s → K¯ 0K∗
(892)0
) + B(B
0
s → K0K¯ ∗
(892)0
) = (16.4 ± 3.4 ± 2.3) × 10−6
,
where the first uncertainty is statistical and the second is systematic. No evidence is found
for the decay B0 → K0
SK∗
(892)0 and an upper limit is set on the branching fraction,
B(B0 → K¯ 0K∗
(892)0
) + B(B0 → K0K¯ ∗
(892)0
) < 0.96 × 10−6
, at 90 % confidence level.
All results are consistent with Standard Model predictions.
Date Issued
2016-01-04
Date Acceptance
2015-12-15
Citation
Journal of High Energy Physics, 2016, 2016 (1)
ISSN
1126-6708
Publisher
Springer
Journal / Book Title
Journal of High Energy Physics
Volume
2016
Issue
1
Copyright Statement
Open Access, Copyright CERN,
for the benefit of the LHCb Collaboration.
Article funded by SCOAP3
for the benefit of the LHCb Collaboration.
Article funded by SCOAP3
License URL
Subjects
Science & Technology
Physical Sciences
Physics, Particles & Fields
Physics
Hadron-Hadron scattering
B physics
VIOLATION
TOOL
Publication Status
Published
Article Number
012