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  4. Branching fraction and CP asymmetry of the decays B+ -> K-S(0)pi(+) and B+ -> (KSK+)-K-0
 
research article

Branching fraction and CP asymmetry of the decays B+ -> K-S(0)pi(+) and B+ -> (KSK+)-K-0

Aaij, R.
•
Adeva, B.
•
Adinolfi, M.
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2013
Physics Letters B

An analysis of B+ -> K-S(0)pi(+) and B+ -> (KSK+)-K-0 decays is performed with the LHCb experiment. The pp collision data used correspond to integrated luminosities of 1fb(-1) and 2fb(-1) collected at centre-of-mass energies of root s=7TeV and root s=8TeV, respectively. The ratio of branching fractions and the direct CP asymmetries are measured to be B(B+ -> (KSK+)-K-0)/B(B+ -> K-S(0)pi(+)) = 0.064+/-0.009(stat.) +/- 0.004(syst.), A(CP)(B+ -> K-S(0)pi(+)) = -0.022 +/- 0.025 (stat.) +/- 0.010(syst.) and A(CP)(B+ -> (KSK+)-K-0)=-0.21 +/- 0.14(stat.) +/- 0.01(syst.). The data sample taken at root s = 7 TeV is used to search for B+c?K0SK+ decays and results in the upper limit (f(c).B (B-c(+) -> (KSK+)-K-0))/(f(u).B(B+ -> K-S(0)pi(+))) < 5.8 x 10(-2) at 90% confidence level, where f(c) and f(u) denote the hadronisation fractions of a <(b)over bar> quark into a B-c(+) or a B+ meson, respectively. (C) 2013 CERN. Published by Elsevier B.V. All rights reserved.

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Type
research article
DOI
10.1016/j.physletb.2013.09.046
Web of Science ID

WOS:000327907000010

Author(s)
Aaij, R.
Adeva, B.
Adinolfi, M.
Adrover, C.
Affolder, A.
Ajaltouni, Z.
Albrecht, J.
Alessio, E.
Alexander, M.
Ali, S.
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Corporate authors
LHCb Collaboration
Date Issued

2013

Publisher

Elsevier Science Bv

Published in
Physics Letters B
Volume

726

Issue

4-5

Start page

646

End page

655

Editorial or Peer reviewed

REVIEWED

Written at

EPFL

EPFL units
LPHE  
Available on Infoscience
February 17, 2014
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/100828
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