Amplitude analysis and measurement of the time-dependent CP asymmetry of $B^0 \to K_S^0 K_S^0 K_S^0$ decays

Lees, J.P.; Poireau, V.; Tisserand, V.; Garra Tico, J.; Grauges, E.; Martinelli, M.; Milanes, D.A.; Palano, A.; Pappagallo, M.; Eigen, G.

doi:10.1103/PhysRevD.85.054023

Amplitude analysis and measurement of the time-dependent CP asymmetry of $B^0 \to K_S^0 K_S^0 K_S^0$ decays

BaBar

Collaboration

Nov, 2011

24 pages

Published in:

Phys.Rev.D 85 (2012) 054023

e-Print:

1111.3636 [hep-ex]

DOI:

10.1103/PhysRevD.85.054023

PDG:

{{\mathit B}^{0}}

\rightarrow

{{\mathit \chi}_{{{c0}}}}{{\mathit K}^{0}}

Report number:

BABAR-PUB-11-020,
SLAC-PUB-14730

Experiments:

SLAC-PEP2-BABAR

View in:

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reference search47 citations

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Abstract: (arXiv)

We present the first results on the Dalitz-plot structure and improved measurements of the time-dependent CP-violation parameters of the process

B^0 \rightarrow K^0_S K^0_S K^0_S

obtained using

468\times10^{6}

B\bar{B}

decays collected with the BABAR detector at the PEP-II asymmetric-energy

B

factory at SLAC. The Dalitz-plot structure is probed by a time-integrated amplitude analysis that does not distinguish between

B^0

and

\bar{B}^0

decays. We measure the total inclusive branching fraction

{\cal B}(

B^0

\rightarrow K^0_S K^0_S K^0_S)=\rm (6.19 \pm 0.48 \pm 0.15 \pm 0.12)\times 10^{-6}

, where the first uncertainty is statistical, the second is systematic, and the third represents the Dalitz-plot signal model dependence. We also observe evidence for the intermediate resonant states

f_0(980)

,

f_0(1710)

, and

f_2(2010)

. Their respective product branching fractions are measured to be

\rm(2.70\,^{+1.25}_{-1.19} \pm 0.36 \pm 1.17)\times 10^{-6}

,

\rm(0.50\,^{+0.46}_{-0.24} \pm 0.04 \pm 0.10)\times 10^{-6}

, and

\rm(0.54\,^{+0.21}_{-0.20} \pm 0.03 \pm 0.52)\times 10^{-6}

. Additionally, we determine the mixing-induced CP-violation parameters to be

{\cal S} = -0.94\,^{+0.24}_{-0.21} \pm 0.06

and

{\cal C} = -0.17 \pm 0.18 \pm 0.04

, where the first uncertainty is statistical and the second is systematic. These values are in agreement with the standard model expectation. For the first time, we report evidence of CP violation in

B^0

\rightarrow K^0_S K^0_S K^0_S$ decays; CP conservation is excluded at 3.8 standard deviations including systematic uncertainties.

Note:

24 pages, 44 postscript figures

13.25.Jx
13.25.Gv
13.66.Bc
14.40.-n
B0: hadronic decay
CP: violation
asymmetry: CP: time dependence
Dalitz plot
decay: amplitude analysis
B0: branching ratio

References(27)

Figures(45)

[1]

CP asymmetries in B decays with new physics in decay amplitudes

Yuval Grossman
(
- SLAC
)
,
Mihir P. Worah
(
- SLAC
)

- Phys.Lett.B 395 (1997) 241-249
•
e-Print:
- hep-ph/9612269
•
DOI:
- 10.1016/S0370-2693(97)00068-3

[2]

CP-violating asymmetries in B0 decays to K+ K- K0(S(L)) and K0(S) K0(S) K0(S(L))

Hai-Yang Cheng
(
- Taiwan, Inst. Phys.
)
,
Chun-Khiang Chua
(
- Taiwan, Inst. Phys.
)
,
Amarjit Soni
(
- Brookhaven
)

- Phys.Rev.D 72 (2005) 094003
•
e-Print:
- hep-ph/0506268
•
DOI:
- 10.1103/PhysRevD.72.094003

[3]

Measurement of CP Asymmetries in $B^0 \to K^0_{S} K^0_{S} K^0_{S}$ Decays

BaBar

Collaboration

•

Bernard Aubert
(
- Annecy, LAPP
)

et al.

- Phys.Rev.D 76 (2007) 091101
•
e-Print:
- hep-ex/0702046
•
DOI:
- 10.1103/PhysRevD.76.091101

[4]

Observation of time-dependent CP violation in B0 ---> eta-prime K0 decays and improved measurements of CP asymmetries in B0 ---> phi K0, K0(s) K0(s) K0(s) and B0 ---> J/psi K0 decays

Belle

Collaboration

•

K.-F. Chen

et al.

- Phys.Rev.Lett. 98 (2007) 031802,
- Conf.Proc.C 060726 (2006) 823-826,
•
e-Print:
- hep-ex/0608039
•
DOI:
- 10.1103/PhysRevLett.98.031802

[5]

Time dependent CP violation in B0 ---> P0 P0 X0 decays

Tim Gershon
(
- KEK, Tsukuba
)
,
Masashi Hazumi
(
- KEK, Tsukuba
)

- Phys.Lett.B 596 (2004) 163-172
•
e-Print:
- hep-ph/0402097
•
DOI:
- 10.1016/j.physletb.2004.06.095

[6]

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

[7]

Measurements of CP-violating asymmetries in the decay $B^0 \to K^{+} K^{-} K^0$

BaBar

Collaboration

•

Bernard Aubert
(
- Annecy, LAPP
)

et al.

- Phys.Rev.Lett. 99 (2007) 161802
•
e-Print:
- 0706.3885
•
DOI:
- 10.1103/PhysRevLett.99.161802

[8]

Measurement of CP-Violating Asymmetries in the $B^0 \to K^{+} K^{-} K^0_{s}$ Dalitz Plot

BaBar

Collaboration

•

Bernard Aubert
(
- Annecy, LAPP
)

et al.

e-Print:
- 0808.0700

[9]

Dalitz analysis of the three-body charmless decays B+ ---> K+ pi+ pi- and B+ ---> K+ K+ K-

Belle

Collaboration

•

A. Garmash
(
- Princeton U.
)

et al.

- Phys.Rev.D 71 (2005) 092003
•
e-Print:
- hep-ex/0412066
•
DOI:
- 10.1103/PhysRevD.71.092003

[10]

Measurement of CP violating asymmetries in $B^0 -> K^+K^- K^0_S$ decays with a time-dependent Dalitz approach

Belle

Collaboration

•

Y. Nakahama
(
- Tokyo U.
)

et al.

- Phys.Rev.D 82 (2010) 073011
•
e-Print:
- 1007.3848
•
DOI:
- 10.1103/PhysRevD.82.073011

[11]

Observation of the Decay $B^{+} \to K^{+} K^{-} \pi^{+}$

BaBar

Collaboration

•

Bernard Aubert
(
- Annecy, LAPP
)

et al.

- Phys.Rev.Lett. 99 (2007) 221801
•
e-Print:
- 0708.0376
•
DOI:
- 10.1103/PhysRevLett.99.221801

[12]

Search for the decay B+ ---> K0(S) K0(S) pi+

BaBar

Collaboration

•

Bernard Aubert
(
- Annecy, LAPP
)

et al.

- Phys.Rev.D 79 (2009) 051101
•
e-Print:
- 0811.1979
•
DOI:
- 10.1103/PhysRevD.79.051101

[13]

Measuring gamma with $B \to K \pi \pi$ and $B \to K K \bar{k}$ Decays

- Phys.Rev.D 85 (2012) 016010
•
e-Print:
- 1109.0881
•
DOI:
- 10.1103/PhysRevD.85.016010

[14]

The BaBar detector

BaBar

Collaboration

•

Bernard Aubert
(
- Annecy, LAPP
)

et al.

- Nucl.Instrum.Meth.A 479 (2002) 1-116
•
e-Print:
- hep-ex/0105044
•
DOI:
- 10.1016/S0168-9002(01)02012-5

[15]

Theoretical nuclear physics

DOI:
- 10.1007/978-1-4612-9959-2

[16]

Review of Particle Physics

et al.

- Phys.Lett.B 667 (2008) 1-1340
•
DOI:
- 10.1016/j.physletb.2008.07.018

[17]

Coupled - Channel Analysis of the pi eta and K anti-K Systems Near K anti-K Threshold

Stanley M. Flatte
(
- CERN
)

- Phys.Lett.B 63 (1976) 224-227
•
DOI:
- 10.1016/0370-2693(76)90654-7

[18]

Resonances in J / psi ---> phi pi+ pi- and phi K+ K-

BES

Collaboration

•

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

et al.

- Phys.Lett.B 607 (2005) 243-253
•
e-Print:
- hep-ex/0411001
•
DOI:
- 10.1016/j.physletb.2004.12.041

[19]

(1995), prepared for 4th International Workshop on Software Engineering and Artificial Intelligence for High-energy and Nuclear Physics (AIHENP 95), Pisa, Italy, 1995