Search for $B^\pm \to (K^\mp \pi^\pm )(D) K^\pm$ and upper limit on the $b \to u$ amplitude in $B^\pm \to D K^\pm$

We search for B+/- --> [K^-/+ pi+/-]_D K+/- decays, where [K-/+ pi+/-]_D indicates that the K-/+ pi+/- pair originates from the decay of a D0 or D0bar. Results are based on 120 million Upsilon(4S) --> B Bbar decays collected with the BaBar detector at SLAC. We set an upper limit on the ratio R_Kpi = {Gamma(B+ --> [K- pi+]_D K+) + Gamma(B- --> [K+ pi-]_D K-)}/ {Gamma(B+ --> [K+ pi-]_D K+) + Gamma(B- --> [K- pi+]_D K-)} < 0.026 (90% C.L.). This constrains the amplitude ratio r_B = |A(B- --> D0bar K-)/A(B- --> D0 K-)| < 0.22 (90% C.L.), consistent with expectations. The small value of r_B favored by our analysis suggests that the determination of the Cabibbo-Kobayashi-Maskawa phase gamma from B --> D K will be difficult.

12.15.Hh
13.25.Hw
meson hadronic decay
CP invariance
unified field theories
B mesons
electron positron: colliding beams
electron positron: annihilation
Upsilon(10570): electroproduction
B: pair production

References(17)

Figures(0)

Measurement of the CP-violating asymmetry amplitude $\sin 2\beta$

BaBar

Collaboration

•

Bernard Aubert
(
- Annecy, LAPP
)

et al.

- Phys.Rev.Lett. 89 (2002) 201802
•
e-Print:
- hep-ex/0207042
•
DOI:
- 10.1103/PhysRevLett.89.201802

An Improved measurement of mixing induced CP violation in the neutral B meson system

Belle

Collaboration

•

Kazuo Abe
(
- KEK, Tsukuba
)

et al.

- Phys.Rev.D 66 (2002) 071102
•
e-Print:
- hep-ex/0208025
•
DOI:
- 10.1103/PhysRevD.66.071102

Parametrization of the Kobayashi-Maskawa Matrix

Lincoln Wolfenstein
(
- Carnegie Mellon U.
)

- Phys.Rev.Lett. 51 (1983) 1945
•
DOI:
- 10.1103/PhysRevLett.51.1945

On determining a weak phase from CP asymmetries in charged B decays

Michael Gronau
(
- Technion
)
,
Daniel Wyler
(
- Zurich U.
)

- Phys.Lett.B 265 (1991) 172-176,
- Phys. Lett. B265 (1991) 172-176 and Haifa Isr. Inst. Technol. - TECHNION-PH-91-14 (91/04,rec.Jun.) 12 p. (108261) Zuerich Univ. - ZU-TH 91-06 (91/04,rec.Jun.) 12 p.
•
DOI:
- 10.1016/0370-2693(91)90034-N

How to determine all the angles of the unitarity triangle from B(d)0 ---> D K(s) and B(s)0 ---> D0

Michael Gronau
(
- Technion and
- DESY
)
,
David London
(
- Montreal U.
)

- Phys.Lett.B 253 (1991) 483-488
•
DOI:
- 10.1016/0370-2693(91)91756-L

Enhanced CP violation with B ---> K D0 (anti-D0) modes and extraction of the CKM angle gamma

- Phys.Rev.Lett. 78 (1997) 3257-3260
•
e-Print:
- hep-ph/9612433
•
DOI:
- 10.1103/PhysRevLett.78.3257

Improved Methods for Observing CP Violation in $B^\pm\to KD$ and Measuring the CKM Phase $\gamma$

- Phys.Rev.D 63 (2001) 036005
•
e-Print:
- hep-ph/0008090
•
DOI:
- 10.1103/PhysRevD.63.036005

Search for $D^0 - \bar{D}^0$ mixing and a measurement of the doubly Cabibbo-suppressed decay rate in $D^0 \to K \pi$ decays

BaBar

Collaboration

•

Bernard Aubert
(
- Annecy, LAPP
)

et al.

- Phys.Rev.Lett. 91 (2003) 171801
•
e-Print:
- hep-ex/0304007
•
DOI:
- 10.1103/PhysRevLett.91.171801

Observation of anti-B0 ---> D0 pi0 and anti-B0 ---> D*0 pi0

CLEO

Collaboration

•

T.E. Coan
(
- Southern Methodist U.
)

et al.

- Phys.Rev.Lett. 88 (2002) 062001
•
e-Print:
- hep-ex/0110055
•
DOI:
- 10.1103/PhysRevLett.88.062001

Observation of color suppressed anti-B0 ---> D0 pi0, D*0 pi0, D0 eta and D0 omega decays

Belle

Collaboration

•

Kazuo Abe
(
- KEK, Tsukuba
)

et al.

- Phys.Rev.Lett. 88 (2002) 052002
•
e-Print:
- hep-ex/0109021
•
DOI:
- 10.1103/PhysRevLett.88.052002

Study of anti-B0 ---> D0(*) pi+ pi- decays

Belle

Collaboration

•

A. Satpathy
(
- KEK, Tsukuba and
- Cincinnati U.
)

et al.

- Phys.Lett.B 553 (2003) 159-166
•
e-Print:
- hep-ex/0211022
•
DOI:
- 10.1016/S0370-2693(02)03198-2

Measurement of branching fractions of color-suppressed decays of the $\overline{B}^0$ meson to $D^{()0} \pi^0$ , $D^{()0} \eta$ , $D^{(*)0} \omega$ , and $D^0 \eta^\prime$

BaBar

Collaboration

•

Bernard Aubert
(
- Annecy, LAPP
)

et al.

- Phys.Rev.D 69 (2004) 032004
•
e-Print:
- hep-ex/0310028
•
DOI:
- 10.1103/PhysRevD.69.032004

Measurement of the angle phi(3) with Dalitz analysis of three body D0 decay from B ---> D0 K process

Belle

Collaboration

•

Kazuo Abe
(
- KEK, Tsukuba
)

et al.

e-Print:
- hep-ex/0308043

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

A study of time dependent CP-violating asymmetries and flavor oscillations in neutral $B$ decays at the $\Upsilon(4S)$

BaBar

Collaboration

•

Bernard Aubert
(
- Annecy, LAPP
)

et al.

- Phys.Rev.D 66 (2002) 032003
•
e-Print:
- hep-ex/0201020
•
DOI:
- 10.1103/PhysRevD.66.032003

Observation of B0 - anti-B0 Mixing

ARGUS

Collaboration

•

H. Albrecht
(
- DESY
)

et al.

- Phys.Lett.B 192 (1987) 245-252,
- In *Cahn, R.N., Goldhaber, G.: The experimental foundations of particle physics* 369-376,
•
DOI:
- 10.1016/0370-2693(87)91177-4

A New approach to a global fit of the CKM matrix

- Eur.Phys.J.C 21 (2001) 225-259
•
e-Print:
- hep-ph/0104062
•
DOI:
- 10.1007/s100520100729

Search for B±→(K∓π±)(D)K±B^\pm \to (K^\mp \pi^\pm )(D) K^\pmB±→(K∓π±)(D)K± and upper limit on the b→ub \to ub→u amplitude in B±→DK±B^\pm \to D K^\pmB±→DK±

Citations per year

Search for $B^\pm \to (K^\mp \pi^\pm )(D) K^\pm$ and upper limit on the $b \to u$ amplitude in $B^\pm \to D K^\pm$