Electro-weak penguin and leptonic decays in BABAR

Electro-weak penguin and leptonic decays provide an indirect probe for physics beyond the Standard Model and contribute to the determination of Standard Model parameters. Copious quantities of B mesons produced at the B-Factories permit precision measurements of the electro-weak penguin decays and searches for leptonic decays. We review the current experimental status of b -> s(d) gamma, B^0 -> D^{*0} gamma, b -> s l^+ l^- and finally B->tau nu decays at BaBar.

Note:

8 pages, 2 postscript figures. To appear in the proceedings of the 10th International Conference on B-Physics at Hadron Machines, BEAUTY 2005

References(43)

Figures(3)

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

Weak Radiative B Meson Decay as a Probe of the Higgs Sector

Benjamin Grinstein
(
- LBL, Berkeley
)
,
Mark B. Wise
(
- Caltech
)

- Phys.Lett.B 201 (1988) 274-278
•
DOI:
- 10.1016/0370-2693(88)90227-4

Effects of Charged Higgs Bosons on the Processes b ---> s Gamma, b ---> s g* and b ---> s Lepton+ Lepton-

Wei-Shu Hou
(
- Munich, Max Planck Inst. and
- Pittsburgh U.
)
,
R.S. Willey
(
- Pittsburgh U.
)

- Phys.Lett.B 202 (1988) 591-595
•
DOI:
- 10.1016/0370-2693(88)91870-9

Searching for supersymmetry in rare B decays

JoAnne L. Hewett
(
- SLAC
)
,
James D. Wells
(
- SLAC
)

- Phys.Rev.D 55 (1997) 5549-5560
•
e-Print:
- hep-ph/9610323
•
DOI:
- 10.1103/PhysRevD.55.5549

QCD anatomy of B ---> X(s gamma) decays

Alexander L. Kagan
(
- Cincinnati U.
)
,
Matthias Neubert
(
- CERN
)

- Eur.Phys.J.C 7 (1999) 5-27
•
e-Print:
- hep-ph/9805303
•
DOI:
- 10.1007/s100529800959

Present status of inclusive rare B decays

Tobias Hurth
(
- CERN and
- SLAC
)

- Rev.Mod.Phys. 75 (2003) 1159-1199
•
e-Print:
- hep-ph/0212304
•
DOI:
- 10.1103/RevModPhys.75.1159

Direct CP violation in $B \to X_s \gamma$ decays as a signature of new physics

Alexander L. Kagan
(
- Cincinnati U.
)
,
Matthias Neubert
(
- CERN
)

- Phys.Rev.D 58 (1998) 094012
•
e-Print:
- hep-ph/9803368
•
DOI:
- 10.1103/PhysRevD.58.094012

Untagged $\bar B \to X_{s+d} \gamma$ CP asymmetry as a probe for new physics

- Nucl.Phys.B 704 (2005) 56-74
•
e-Print:
- hep-ph/0312260
•
DOI:
- 10.1016/j.nuclphysb.2004.10.024

Isospin breaking in $B \to K^* \gamma$ decays

Alexander L. Kagan
(
- Cincinnati U.
)
,
Matthias Neubert
(
- Cornell U., LNS
)

- Phys.Lett.B 539 (2002) 227-234
•
e-Print:
- hep-ph/0110078
•
DOI:
- 10.1016/S0370-2693(02)02100-7

On extracting heavy quark parameters from moments with cuts

I.I. Bigi
(
- Notre Dame U.
)
,
N. Uraltsev
(
- INFN, Milan
)

- Phys.Lett.B 579 (2004) 340-346
•
e-Print:
- hep-ph/0308165
•
DOI:
- 10.1016/j.physletb.2003.10.115

On the expected photon spectrum in B --> X + gamma and its uses

Ikaros Bigi
(
- Notre Dame U.
)
,
Nikolai Uraltsev
(
- Notre Dame U. and
- INFN, Milan and
- St. Petersburg, INP
)

- Int.J.Mod.Phys.A 17 (2002) 4709-4732
•
e-Print:
- hep-ph/0202175
•
DOI:
- 10.1142/S0217751X02010856

Shape function effects in B ---> X(s) gamma and B ---> X(u) l anti-nu decays

Christian W. Bauer
(
- Caltech
)
,
Aneesh V. Manohar
(
- UC, San Diego
)

- Phys.Rev.D 70 (2004) 034024
•
e-Print:
- hep-ph/0312109
•
DOI:
- 10.1103/PhysRevD.70.034024

Factorization and shape function effects in inclusive B meson decays

- Nucl.Phys.B 699 (2004) 335-386
•
e-Print:
- hep-ph/0402094
•
DOI:
- 10.1016/j.nuclphysb.2004.07.041

Subleading shape functions in inclusive B decays

Stefan W. Bosch
(
- Cornell U., LEPP
)
,
Matthias Neubert
(
- Cornell U., LEPP and
- Princeton, Inst. Advanced Study
)
,
Gil Paz
(
- Cornell U., LEPP
)

- JHEP 11 (2004) 073
•
e-Print:
- hep-ph/0409115
•
DOI:
- 10.1088/1126-6708/2004/11/073

Theory of charmless inclusive B decays and the extraction of V(ub)

Bjorn O. Lange
(
- MIT, LNS
)
,
Matthias Neubert
(
- Cornell U., LEPP
)
,
Gil Paz
(
- Cornell U., LEPP
)

- Phys.Rev.D 72 (2005) 073006
•
e-Print:
- hep-ph/0504071
•
DOI:
- 10.1103/PhysRevD.72.073006

Measuring the photon polarization in B ---> K pi pi gamma

Michael Gronau
(
- Technion and
- SLAC
)
,
Yuval Grossman
(
- Technion
)
,
Dan Pirjol
(
- UC, San Diego
)
,
Anders Ryd
(
- Caltech
)

- Phys.Rev.Lett. 88 (2002) 051802
•
e-Print:
- hep-ph/0107254
•
DOI:
- 10.1103/PhysRevLett.88.051802

Photon polarization in radiative B decays

Michael Gronau
(
- Technion
)
,
Dan Pirjol
(
- UC, San Diego
)

- Phys.Rev.D 66 (2002) 054008
•
e-Print:
- hep-ph/0205065
•
DOI:
- 10.1103/PhysRevD.66.054008

Measurement of branching fractions, and CP and isospin asymmetries, for $B \to K^* \gamma$

BaBar

Collaboration

•

Bernard Aubert
(
- Annecy, LAPP
)

et al.

- Phys.Rev.D 70 (2004) 112006
•
e-Print:
- hep-ex/0407003
•
DOI:
- 10.1103/PhysRevD.70.112006

Measurement of branching fractions and mass spectra of $B \to K \pi \pi \gamma$

BaBar

Collaboration

•

Bernard Aubert
(
- Annecy, LAPP
)

et al.

- Phys.Rev.Lett. 98 (2007) 211804,
- Phys.Rev.Lett. 100 (2008) 189903 (erratum),
- Phys.Rev.Lett. 100 (2008) 199905 (erratum)
•
e-Print:
- hep-ex/0507031
•
DOI:
- 10.1103/PhysRevLett.100.189903