Recent results from LHCb on semileptonic decays of b-hadrons - INSPIRE

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Recent results from LHCb on semileptonic decays of b-hadrons

LHCb

Collaboration

•

Concezio Bozzi
(
- INFN, Ferrara and
- CERN
)

for the collaboration.

2017

7 pages

Part of Proceedings, 2017 European Physical Society Conference on High Energy Physics (EPS-HEP 2017) : Venice, Italy, July 5-12, 2017, 206

Published in:

PoS EPS-HEP2017 (2017) 206

Contribution to:

- EPS-HEP 2017
, 206

Published: Mar 20, 2018 by SISSA

DOI:

10.22323/1.314.0206

Experiments:

CERN-LHC-LHCb

View in:

CERN Document Server

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Abstract: (PoS)

Recent results on semileptonic decays of

b

hadrons at LHCb are presented, with particular emphasis on decays involving

\tau

leptons in the final state. A new measurement of

\mathscr{R}(D^{*-} \equiv \mathscr{B}(B^0 \to D^{*-} \tau^+ \nu_{\tau}/ \mathscr{B}(B^0 \to D^{*-} \mu^+ \nu_{\mu})

is reported, by using for the first time the

\tau

lepton decays with three charged pions in the final state. A value of

\mathscr{R}(D^{*-})=0.285 \pm 0.019 \pm0.025 \pm 0.013

is obtained, where the the first uncertainty is statistical, the second systematic and the third uncertainty is due to the limited knowledge of external branching fractions. This measurement is in agreement with the Standard Model prediction and with previous results.

talk: Venice 2017/07/05
p p: scattering
p p: colliding beams
B: semileptonic decay
LHC-B
CERN LHC Coll
B0: branching ratio
branching ratio: ratio: measured
statistical
CERN Lab

References(16)

Figures(0)

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(
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)
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Jernej F. Kamenik
(
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