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Measurement of the relative B−→ D0/D∗0/D∗∗0µ−νµ branching fractions using B− mesons from B∗0 s2 decays
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LHCb Collaboration (Including: Back, J. J., Blake, Thomas, Brossa Gonzalo, A., Costa Sobral, C. M., Crocombe, Andrew, Gershon, T. J., Kreps, Michal, Latham, Thomas, Loh, David, Lupton, Oliver, Mathad, A., Millard, E., Poluektov, Anton and Wicht, Jean). (2019) Measurement of the relative B−→ D0/D∗0/D∗∗0µ−νµ branching fractions using B− mesons from B∗0 s2 decays. Physical Review D, 99 (9). 092009 . doi:10.1103/PhysRevD.99.092009 ISSN 1550-7998.
An open access version can be found in:
Official URL: https://doi.org/10.1103/PhysRevD.99.092009
Abstract
The decay of the narrow resonance
¯
B
*
0
s
2
→
B
−
K
+
can be used to determine the
B
−
momentum in partially reconstructed decays without any assumptions on the decay products of the
B
−
meson. This technique is employed for the first time to distinguish contributions from
D
0
,
D
*
0
, and higher-mass charmed states (
D
*
*
0
) in semileptonic
B
−
decays by using the missing-mass distribution. The measurement is performed using a data sample corresponding to an integrated luminosity of
3.0
fb
−
1
collected with the LHCb detector in
p
p
collisions at center-of-mass energies of 7 and 8 TeV. The resulting branching fractions relative to the inclusive
B
−
→
D
0
X
μ
−
¯
ν
μ
are
f
D
0
=
B
(
B
−
→
D
0
μ
−
¯
ν
μ
)
/
B
(
B
−
→
D
0
X
μ
−
¯
ν
μ
)
=
0.25
±
0.06
,
f
D
*
*
0
=
B
(
B
−
→
(
D
*
*
0
→
D
0
X
)
μ
−
¯
ν
μ
)
/
B
(
B
−
→
D
0
X
μ
−
¯
ν
μ
)
=
0.21
±
0.07
,
with
f
D
*
0
=
1
−
f
D
0
−
f
D
*
*
0
making up the remainder.
| Item Type: | Journal Article | ||||||
|---|---|---|---|---|---|---|---|
| Divisions: | Faculty of Science, Engineering and Medicine > Science > Physics | ||||||
| Journal or Publication Title: | Physical Review D | ||||||
| Publisher: | American Physical Society | ||||||
| ISSN: | 1550-7998 | ||||||
| Official Date: | 30 May 2019 | ||||||
| Dates: |
|
||||||
| Volume: | 99 | ||||||
| Number: | 9 | ||||||
| Article Number: | 092009 | ||||||
| DOI: | 10.1103/PhysRevD.99.092009 | ||||||
| Institution: | University of Warwick | ||||||
| Status: | Peer Reviewed | ||||||
| Publication Status: | Published | ||||||
| Access rights to Published version: | Open Access (Creative Commons) | ||||||
| Related URLs: | |||||||
| Open Access Version: | |||||||
| Contributors: |
|
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