Improving bounds on penguin pollution in $B \to \pi \pi$ - INSPIRE

DataBETA

Improving bounds on penguin pollution in $B \to \pi \pi$

May, 2001

9 pages

Published in:

Phys.Lett.B 514 (2001) 315-320

e-Print:

hep-ph/0105308 [hep-ph]

DOI:

10.1016/S0370-2693(01)00818-8

Report number:

TECHNION-PH-2001-27,
UDEM-GPP-TH-01-89,
IMSC-2001-05-27

View in:

ADS Abstract Service

reference search134 citations

Citations per year

Abstract: (Elsevier)

In the presence of penguin contributions, the indirect CP asymmetry in B 0 ( t )→ π + π − measures sin(2 α +2 θ ), where 2 θ parametrizes the size of the penguin “pollution”. We derive a new upper bound on |2 θ |, requiring the measurement of BR ( B + → π + π 0 ) and an upper bound on B 00 ≡ 1 2 [BR(B 0 →π 0 π 0 )+BR( B 0 →π 0 π 0 )] . The new bound is stronger than those previously discussed in the literature. We also present a lower bound on B 00 . Current data may suggest that it is not very small, in which case θ can be determined using a complete isospin analysis.

Note:

10 pages, LaTeX, 3 figures. Abstract modified slightly. Submitted to Physics Letters

B: hadronic decay
pi: pair production
time dependence
CP: violation
effect: penguin
B: branching ratio
amplitude analysis
numerical calculations
B --> 2pi

References(21)

Figures(0)

[1]

The BABAR physics book: Physics at an asymmetric $B$ factory

BaBar

Collaboration

•

D. Boutigny
(
- Annecy, LAPP
)

et al.

DOI:
- 10.2172/979931

[2]

A measurement of $\sin(2\beta)$ from $B \to J/\psi K^0_S$ with the {CDF} detector

CDF

Collaboration

•

T. Affolder
(
- LBL, Berkeley
)

et al.

- Phys.Rev.D 61 (2000) 072005
•
e-Print:
- hep-ex/9909003
•
DOI:
- 10.1103/PhysRevD.61.072005

Measurement of the CP violation parameter $\sin 2 \phi_{1}$ in $B^0_{d}$ meson decays

Belle

Collaboration

•

A. Abashian

et al.

- Phys.Rev.Lett. 86 (2001) 2509-2514
•
e-Print:
- hep-ex/0102018
•
DOI:
- 10.1103/PhysRevLett.86.2509

Measurement of CP violating asymmetries in $B^0$ decays to CP eigenstates

BaBar

Collaboration

•

Bernard Aubert
(
- Annecy, LAPP
)

et al.

- Phys.Rev.Lett. 86 (2001) 2515-2522
•
e-Print:
- hep-ex/0102030
•
DOI:
- 10.1103/PhysRevLett.86.2515

[3]

Measuring CP asymmetry in B ---> rho pi decays without ambiguities

Arthur E. Snyder
(
- SLAC
)
,
Helen R. Quinn
(
- SLAC
)

- Phys.Rev.D 48 (1993) 2139-2144
•
DOI:
- 10.1103/PhysRevD.48.2139

The Use of early data on $B \to \rho \pi$ decays

Helen R. Quinn
(
- SLAC
)
,
Joao P. Silva
(
- SLAC
)

- Phys.Rev.D 62 (2000) 054002
•
e-Print:
- hep-ph/0001290
•
DOI:
- 10.1103/PhysRevD.62.054002

[4]

B ---> K() anti-K() decays: A New method for measuring the CP phase alpha

Alakabha Datta
(
- Montreal U.
)
,
David London
(
- Montreal U.
)

- Phys.Lett.B 533 (2002) 65-74
•
e-Print:
- hep-ph/0105073
•
DOI:
- 10.1016/S0370-2693(02)01598-8

Penguin Effects in Hadronic B Asymmetries

David London
(
- DESY
)
,
R.D. Peccei
(
- UCLA
)

- Phys.Lett.B 223 (1989) 257-261
•
DOI:
- 10.1016/0370-2693(89)90249-9

CP Violation in Neutral B Decays to CP Eigenstates

Michael Gronau
(
- Munich, Max Planck Inst.
)

- Phys.Rev.Lett. 63 (1989) 1451
•
DOI:
- 10.1103/PhysRevLett.63.1451

Large penguin effects in the CP asymmetry of B(d)0 ---> pi+ pi-

Michael Gronau
(
- SLAC
)

- Phys.Lett.B 300 (1993) 163-168
•
e-Print:
- hep-ph/9209279
•
DOI:
- 10.1016/0370-2693(93)90765-A

Critical Reanalysis of CP Asymmetries in B0 Decays to CP Eigenstates

Benjamin Grinstein
(
- Fermilab
)

- Phys.Lett.B 229 (1989) 280-284
•
DOI:
- 10.1016/0370-2693(89)91172-6

Isospin analysis of CP asymmetries in B decays

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

- Phys.Rev.Lett. 65 (1990) 3381-3384
•
DOI:
- 10.1103/PhysRevLett.65.3381

Bounding the effect of penguin diagrams in a(CP) (B0 ---> pi+ pi-)

Yuval Grossman
(
- SLAC
)
,
Helen R. Quinn
(
- SLAC
)

- Phys.Rev.D 58 (1998) 017504
•
e-Print:
- hep-ph/9712306
•
DOI:
- 10.1103/PhysRevD.58.017504

Taming the penguin in the B0(d)(t) ---> pi+ pi- CP asymmetry: Observables and minimal theoretical input

Jerome Charles
(
- Orsay, LPT
)

- Phys.Rev.D 59 (1999) 054007
•
e-Print:
- hep-ph/9806468
•
DOI:
- 10.1103/PhysRevD.59.054007

Model independent electroweak penguins in B decays to two pseudoscalars

- Phys.Rev.D 60 (1999) 034021,
- Phys.Rev.D 69 (2004) 119901 (erratum)
•
e-Print:
- hep-ph/9810482
•
DOI:
- 10.1103/PhysRevD.60.034021

A General analysis of gamma determinations from B ---> pi K decays

Andrzej J. Buras
(
- CERN and
- Munich, Tech. U.
)
,
Robert Fleischer
(
- CERN
)

- Eur.Phys.J.C 11 (1999) 93-109
•
e-Print:
- hep-ph/9810260
•
DOI:
- 10.1007/s100520050617

How isospin violation mocks `new' physics: pi0 - eta, eta-prime mixing in B ---> pi pi decays

Susan Gardner
(
- Kentucky U.
)

- Phys.Rev.D 59 (1999) 077502
•
e-Print:
- hep-ph/9806423
•
DOI:
- 10.1103/PhysRevD.59.077502

Observation of B --> K+- pi0 and B --> K0 pi0, and evidence for B --> pi+ pi-

CLEO

Collaboration

•

D. Cronin-Hennessy
(
- Rochester U.
)

et al.

- Phys.Rev.Lett. 85 (2000) 515-519
•
DOI:
- 10.1103/PhysRevLett.85.515

Search for $B^0 \to \pi^0 \pi^0$ decay

CLEO

Collaboration

•

D.M. Asner
(
- UC, Santa Barbara
)

et al.

- Phys.Rev.D 65 (2002) 031103
•
e-Print:
- hep-ex/0103040
•
DOI:
- 10.1103/PhysRevD.65.031103

Measurement of branching fractions for B ---> pi pi, K pi and K K decays

Belle

Collaboration

•

Kazuo Abe
(
- KEK, Tsukuba
)

et al.

- Phys.Rev.Lett. 87 (2001) 101801
•
e-Print:
- hep-ex/0104030
•
DOI:
- 10.1103/PhysRevLett.87.101801

Measurement of branching fractions and search for CP-violating charge asymmetries in charmless two-body $B$ decays into pions and kaons

BaBar

Collaboration

•

Bernard Aubert
(
- Annecy, LAPP
)

et al.

- Phys.Rev.Lett. 87 (2001) 151802
•
e-Print:
- hep-ex/0105061
•
DOI:
- 10.1103/PhysRevLett.87.151802