First observation of $\bar B^0 \to J/\psi K^+K^-$ and search for $\bar B^0 \to J/\psi\phi$ decays - INSPIRE

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First observation of $\bar B^0 \to J/\psi K^+K^-$ and search for $\bar B^0 \to J/\psi\phi$ decays

LHCb

Collaboration

Aug 27, 2013

15 pages

Published in:

Phys.Rev.D 88 (2013) 7, 072005

Published: Oct 14, 2013

e-Print:

1308.5916 [hep-ex]

DOI:

10.1103/PhysRevD.88.072005

PDG:

{{\mathit B}^{0}}

\rightarrow

{{\mathit J / \psi}{(1S)}}{{\mathit \phi}}

Report number:

CERN-PH-EP-2013-159,
LHCB-PAPER-2013-045

Experiments:

CERN-LHC-LHCb

View in:

reference search41 citations

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Abstract: (APS)

The first observation of the B¯0→J/ψK+K- decay is presented with a data sample corresponding to an integrated luminosity of 1.0 fb-1 of pp collisions at a center-of-mass energy of 7 TeV collected with the LHCb detector. The branching fraction is measured to be B(B¯0→J/ψK+K-)=(2.53±0.31±0.19)×10-6, where the first uncertainty is statistical and the second is systematic. An amplitude analysis of the final state in the B¯0→J/ψK+K- decay is performed to separate resonant and nonresonant contributions in the K+K- spectrum. Evidence of the a0(980) resonance is reported with statistical significance of 3.9 standard deviations. The corresponding product branching fraction is measured to be B(B¯0→J/ψa0(980),a0(980)→K+K-)=(4.70±3.31±0.72)×10-7, yielding an upper limit of B(B¯0→J/ψa0(980),a0(980)→K+K-)<9.0×10-7 at 90% confidence level. No evidence of the resonant decay B¯0→J/ψϕ is found, and an upper limit on its branching fraction is set to be B(B¯0→J/ψϕ)<1.9×10-7 at 90% confidence level.

Note:

22 pages 16 figures; v2 contains PRD review responses

14.40.Nd
13.25.Hw
14.40.Pq
anti-B0: branching ratio: measured
anti-B0: hadronic decay
branching ratio: upper limit
K+ K-: mass spectrum
a0(980): intermediate state
p p: scattering
amplitude analysis

References(30)

Figures(23)

[1]

Analysis of the resonant components in $B_s \to J/\psi\pi^+\pi^-$

LHCb

Collaboration

•

R Aaij
(
- NIKHEF, Amsterdam
)

et al.

- Phys.Rev.D 86 (2012) 052006
•
e-Print:
- 1204.5643
•
DOI:
- 10.1103/PhysRevD.86.052006

[2]

Amplitude analysis and the branching fraction measurement of $\bar{B}^0_s \to J/\psi K^+K^-$

LHCb

Collaboration

•

R Aaij
(
- NIKHEF, Amsterdam
)

et al.

- Phys.Rev.D 87 (2013) 7, 072004
•
e-Print:
- 1302.1213
•
DOI:
- 10.1103/PhysRevD.87.072004

[3]

Analysis of the resonant components in $B^¯+0 \to J/\psi\pi^+\pi^-$

LHCb

Collaboration

•

R Aaij
(
- NIKHEF, Amsterdam
)

et al.

- Phys.Rev.D 87 (2013) 5, 052001
•
e-Print:
- 1301.5347
•
DOI:
- 10.1103/PhysRevD.87.052001

[4]

$B$ decays dominated by $\omega^- \phi$ mixing

Michael Gronau
(
- Chicago U., EFI and
- Chicago U.
)
,
Jonathan L. Rosner
(
- Chicago U., EFI and
- Chicago U.
)

- Phys.Lett.B 666 (2008) 185-188
•
e-Print:
- 0806.3584
•
DOI:
- 10.1016/j.physletb.2008.07.016

[5]

On the analysis of tau-meson data and the nature of the tau-meson

R.H. Dalitz
(
- Birmingham U.
)

- Phil.Mag.Ser.7 44 (1953) 1068-1080,
- Phil. Mag. 44 (1953) 1068-1080
•
DOI:
- 10.1080/14786441008520365

[6]

The LHCb Detector at the LHC

LHCb

Collaboration

•

A.Augusto Alves, Jr.
(
- Rio de Janeiro, CBPF
)

et al.

- JINST 3 (2008) S08005
•
DOI:
- 10.1088/1748-0221/3/08/S08005

[7]

Performance of the LHCb RICH detector at the LHC

M. Adinolfi
(
- Bristol U.
)
,
G. Aglieri Rinella
(
- CERN
)
,
E. Albrecht
(
- CERN
)
,
T. Bellunato
(
- INFN, Milan Bicocca
)
,
S. Benson
(
- Edinburgh U.
)

et al.

- Eur.Phys.J.C 73 (2013) 2431
•
e-Print:
- 1211.6759
•
DOI:
- 10.1140/epjc/s10052-013-2431-9

[8]

Performance of the LHCb muon system

A.A. Alves, Jr.
(
- INFN, Rome
)
,
L. Anderlini
(
- INFN, Florence
)
,
M. Anelli
(
- Frascati
)
,
R.Antunes Nobrega
(
- INFN, Rome
)
,
G. Auriemma
(
- INFN, Rome and
- Basilicata U., Potenza
)

et al.

- JINST 8 (2013) P02022
•
e-Print:
- 1211.1346
•
DOI:
- 10.1088/1748-0221/8/02/P02022

[9]

The LHCb Trigger and its Performance in 2011

R Aaij
(
- Nikhef, Amsterdam
)
,
J Albrecht
(
- CERN
)
,
F Alessio
(
- CERN
)
,
S Amato
(
- Rio de Janeiro Federal U.
)
,
E Aslanides
(
- Marseille, CPPM
)

et al.

- JINST 8 (2013) P04022
•
e-Print:
- 1211.3055
•
DOI:
- 10.1088/1748-0221/8/04/P04022

[10]

PYTHIA 6.4 Physics and Manual

Torbjorn Sjostrand
(
- Lund U., Dept. Theor. Phys.
)
,
Stephen Mrenna
(
- Fermilab
)
,
Peter Z. Skands
(
- Fermilab
)

- JHEP 05 (2006) 026
•
e-Print:
- hep-ph/0603175
•
DOI:
- 10.1088/1126-6708/2006/05/026

[11]

Handling of the generation of primary events in Gauss, the LHCb simulation framework

LHCb

Collaboration

•

I. Belyaev
(
- NIKHEF, Amsterdam and
- Moscow, ITEP
)

et al.

•
DOI:
- 10.1109/NSSMIC.2010.5873949

[12]

The EvtGen particle decay simulation package

D.J. Lange
(
- LLNL, Livermore
)

- Nucl.Instrum.Meth.A 462 (2001) 152-155
•
DOI:
- 10.1016/S0168-9002(01)00089-4

[13]

PHOTOS Monte Carlo: A Precision tool for QED corrections in $Z$ and $W$ decays

Piotr Golonka
(
- CERN and
- Cracow, INP
)
,
Zbigniew Was
(
- CERN and
- Cracow, INP
)

- Eur.Phys.J.C 45 (2006) 97-107
•
e-Print:
- hep-ph/0506026
•
DOI:
- 10.1140/epjc/s2005-02396-4

[14]

Geant4 developments and applications

et al.

- IEEE Trans.Nucl.Sci. 53 (2006) 270
•
DOI:
- 10.1109/TNS.2006.869826

[14]

GEANT4 - A Simulation Toolkit

GEANT4

Collaboration

•

S. Agostinelli
(
- Genoa U.
)

et al.

- Nucl.Instrum.Meth.A 506 (2003) 250-303
•
DOI:
- 10.1016/S0168-9002(03)01368-8

[15]

The LHCb simulation application, Gauss: Design, evolution and experience

LHCb

Collaboration

•

M. Clemencic
(
- CERN
)

et al.

- J.Phys.Conf.Ser. 331 (2011) 032023
•
DOI:
- 10.1088/1742-6596/331/3/032023

[16]

Review of Particle Physics (RPP)

J. Beringer
(
- LBL, Berkeley
)
,
J.F. Arguin
(
- LBL, Berkeley and
- Montreal U.
)
,
R.M. Barnett
(
- LBL, Berkeley
)
,
K. Copic
(
- LBL, Berkeley
)
,
O. Dahl
(
- LBL, Berkeley
)

et al.

- Phys.Rev.D 86 (2012) 010001
•
DOI:
- 10.1103/PhysRevD.86.010001

[17]

Classification and regression trees. Wadsworth international group, Belmont, California, USA, 1984

L. Breiman
,
J.H. Friedman
,
R.A. Olshen
,
C.J. Stone

[18]

Precision measurement of the $\Lambda_b$ baryon lifetime

LHCb

Collaboration

•

R Aaij
(
- NIKHEF, Amsterdam
)

et al.

- Phys.Rev.Lett. 111 (2013) 102003
•
e-Print:
- 1307.2476
•
DOI:
- 10.1103/PhysRevLett.111.102003

[19]

Partial wave analysis of chi(c0) ---> pi+ pi- K+ K-

BES

Collaboration

•

M. Ablikim
(
- Beijing, Inst. High Energy Phys.
)

et al.

- Phys.Rev.D 72 (2005) 092002
•
e-Print:
- hep-ex/0508050
•
DOI:
- 10.1103/PhysRevD.72.092002

[20]

Dalitz plot analysis of the decay $B^\pm \to K^\pm K^\pm K^\mp$

BaBar

Collaboration

•

Bernard Aubert
(
- Annecy, LAPP
)

et al.

- Phys.Rev.D 74 (2006) 032003
•
e-Print:
- hep-ex/0605003
•
DOI:
- 10.1103/PhysRevD.74.032003

[21]

On the Nature of 0+ Mesons

Stanley M. Flatte
(
- CERN
)

- Phys.Lett.B 63 (1976) 228-230
•
DOI:
- 10.1016/0370-2693(76)90655-9

[22]

p bar p annihilation at rest into K(L) K+ pi-+

et al.

- Phys.Rev.D 57 (1998) 3860-3872
•
DOI:
- 10.1103/PhysRevD.57.3860

[23]

Clarification of the Use of Chi Square and Likelihood Functions in Fits to Histograms

Steve Baker
(
- UCLA
)
,
Robert D. Cousins
(
- UCLA
)

- Nucl.Instrum.Meth. 221 (1984) 437-442
•
DOI:
- 10.1016/0167-5087(84)90016-4

[24]

Measurement of branching fractions and charge asymmetries for two-body B meson decays with charmonium

Belle

Collaboration

•

K. Abe

et al.

- Phys.Rev.D 67 (2003) 032003
•
e-Print:
- hep-ex/0211047
•
DOI:
- 10.1103/PhysRevD.67.032003

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