Evidence for large direct CP violation in B+- ---> rho(770)0K+- from analysis of the three-body charmless B+- --->K+- pi+- pi-+ decay - INSPIRE

DataBETA

Evidence for large direct CP violation in B+- ---> rho(770)0K+- from analysis of the three-body charmless B+- --->K+- pi+- pi-+ decay

Belle

Collaboration

Dec, 2005

6 pages

Published in:

Phys.Rev.Lett. 96 (2006) 251803

e-Print:

hep-ex/0512066 [hep-ex]

DOI:

10.1103/PhysRevLett.96.251803

PDG:

{{\mathit f}_{{{0}}}{(980)}}

Report number:

BELLE-PREPRINT-2005-36

Experiments:

KEK-BF-BELLE

View in:

ADS Abstract Service

reference search200 citations

Citations per year

Abstract: (arXiv)

We report results on a Dalitz analysis of three-body charmless B+-=>K+-pi+-pi-+ decay including searches for direct CP violation. We report the first observation of the decay B+=>f_2(1270)K+ with a statistical significance above 6sigma. We also observe 3.9sigma evidence for large direct CP violation in the B+-=>rho(770)0K+- channel. This is the first evidence for CP violation in a charged meson decay. The results are obtained with a data sample that contains 386 million BBbar pairs collected at the Y(4S) resonance with the Belle detector at the KEKB asymmetric-energy e+e- collider.

11.30.Er
14.40.Nd
13.25.Hw
electron positron: colliding beams
electron positron: annihilation
Upsilon(10570): electroproduction
B: pair production
B: hadronic decay
B+: branching ratio
B-: branching ratio

References(17)

Figures(0)

A New measurement of direct CP violation in the neutral kaon system

NA31

Collaboration

•

G.D. Barr
(
- CERN
)

et al.

- Phys.Lett.B 317 (1993) 233-242
•
DOI:
- 10.1016/0370-2693(93)91599-I

A Precision measurement of direct CP violation in the decay of neutral kaons into two pions

NA48

Collaboration

•

J.R. Batley
(
- Cambridge U.
)

et al.

- Phys.Lett.B 544 (2002) 97-112
•
e-Print:
- hep-ex/0208009
•
DOI:
- 10.1016/S0370-2693(02)02476-0

Measurements of Direct CP Violation, CPT Symmetry, and Other Parameters in the Neutral Kaon System

KTeV

Collaboration

•

A. Alavi-Harati
(
- Wisconsin U., Madison
)

et al.

- Phys.Rev.D 67 (2003) 012005,
- Phys.Rev.D 70 (2004) 079904 (erratum)
•
e-Print:
- hep-ex/0208007
•
DOI:
- 10.1103/PhysRevD.70.079904

Observation of direct CP violation in $B^0 \to K^+ \pi^-$ decays

BaBar

Collaboration

•

Bernard Aubert
(
- Annecy, LAPP
)

et al.

- Phys.Rev.Lett. 93 (2004) 131801
•
e-Print:
- hep-ex/0407057
•
DOI:
- 10.1103/PhysRevLett.93.131801

Evidence for direct CP violation in B0 ---> K+ pi- decays

Belle

Collaboration

•

Y. Chao
(
- Taiwan, Natl. Taiwan U.
)

et al.

- Phys.Rev.Lett. 93 (2004) 191802
•
e-Print:
- hep-ex/0408100
•
DOI:
- 10.1103/PhysRevLett.93.191802

QCD factorization for B ---> PP and B ---> PV decays

- Nucl.Phys.B 675 (2003) 333-415
•
e-Print:
- hep-ph/0308039
•
DOI:
- 10.1016/j.nuclphysb.2003.09.026

Charmless B ---> VP decays using flavor SU(3) symmetry

Cheng-Wei Chiang
(
- Chicago U., EFI and
- Chicago U. and
- Argonne
)
,
Michael Gronau
(
- Chicago U., EFI and
- Chicago U. and
- Technion
)
,
Zumin Luo
(
- Chicago U., EFI and
- Chicago U.
)
,
Jonathan L. Rosner
(
- Chicago U., EFI and
- Chicago U.
)
,
Denis A. Suprun
(
- Chicago U., EFI and
- Chicago U.
)

- Phys.Rev.D 69 (2004) 034001
•
e-Print:
- hep-ph/0307395
•
DOI:
- 10.1103/PhysRevD.69.034001

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

The Belle Detector

Belle

Collaboration

•

A. Abashian

et al.

- Nucl.Instrum.Meth.A 479 (2002) 117-232
•
DOI:
- 10.1016/S0168-9002(01)02013-7

Overview of the KEKB accelerators

S. Kurokawa
(
- KEK, Tsukuba
)
,
Eiji Kikutani
(
- KEK, Tsukuba
)

- Nucl.Instrum.Meth.A 499 (2003) 1-7
•
DOI:
- 10.1016/S0168-9002(02)01771-0

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

Study of B meson decays to three body charmless hadronic final states

Belle

Collaboration

•

A. Garmash
(
- Novosibirsk, IYF and
- KEK, Tsukuba
)

et al.

- Phys.Rev.D 69 (2004) 012001
•
e-Print:
- hep-ex/0307082
•
DOI:
- 10.1103/PhysRevD.69.012001

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

Review of particle physics. Particle Data Group

S. Eidelman
(
- Novosibirsk, IYF
)
,
K.G. Hayes
(
- Hillsdale Coll.
)
,
K.A. Olive
(
- Minnesota U.
)
,
M. Aguilar-Benitez
(
- Madrid, CIEMAT
)
,
Claude Amsler
(
- Zurich U.
)

et al.

- Phys.Lett.B 592 (2004) 1-4, 1
•
DOI:
- 10.1016/j.physletb.2004.06.001

Dalitz-plot analysis of the decays $B^\pm \to K^\pm \pi^\mp \pi^\pm$

BaBar

Collaboration

•

Bernard Aubert
(
- Annecy, LAPP
)

et al.

- Phys.Rev.D 72 (2005) 072003,
- Phys.Rev.D 74 (2006) 099903 (erratum)
•
e-Print:
- hep-ex/0507004
•
DOI:
- 10.1103/PhysRevD.72.072003

A Study of K- pi+ Scattering in the Reaction K- p ---> K- pi+ n at 11-GeV/c

et al.

- Nucl.Phys.B 296 (1988) 493-526
•
DOI:
- 10.1016/0550-3213(88)90028-4

Estimates of flavored scalar production in B decays

Victor Chernyak
(
- Novosibirsk, IYF
)

- Phys.Lett.B 509 (2001) 273-276
•
e-Print:
- hep-ph/0102217
•
DOI:
- 10.1016/S0370-2693(01)00515-9