Measurement of the $B^0 \to \pi^{-} \ell^{+} \nu$ form-factor shape and branching fraction, and determination of $|V_{ub}|$ with a loose neutrino reconstruction technique - INSPIRE

DataBETA

Measurement of the $B^0 \to \pi^{-} \ell^{+} \nu$ form-factor shape and branching fraction, and determination of $|V_{ub}|$ with a loose neutrino reconstruction technique

BaBar

Collaboration

Dec, 2006

9 pages

Published in:

Phys.Rev.Lett. 98 (2007) 091801

e-Print:

hep-ex/0612020 [hep-ex]

DOI:

10.1103/PhysRevLett.98.091801

PDG:

{{\mathit B}^{0}}

\rightarrow

{{\mathit \pi}^{-}}{{\mathit \ell}^{+}}{{\mathit \nu}_{{{{{\mathit \ell}}}}}}

Report number:

SLAC-PUB-12253,
BABAR-PUB-06-069

Experiments:

SLAC-PEP2-BABAR

View in:

reference search103 citations

Citations per year

Abstract:

We report the results of a study of the exclusive charmless semileptonic decay, B --> pi l nu, undertaken with approximately 227 million BBbar pairs collected at the Upsilon(4S) resonance with the BaBar detector. The analysis uses events in which the signal B decays are reconstructed with an innovative loose neutrino reconstruction technique. We obtain partial branching fractions in 12 bins of q2, the momentum transfer squared, from which we extract the f+(q2) form-factor shape and the total branching fraction BF(B0 --> pi l nu) = (1.46 +- 0.07(stat) +- 0.08(syst)) x 10^-4. Based on a recent unquenched lattice QCD calculation of the form factor in the range q2 > 16 GeV^2, we find the magnitude of the CKM matrix element |Vub| to be (4.1 +- 0.2(stat) +- 0.2(syst) +0.6-0.4(FF)) x 10^-3, where the last uncertainty is due to the normalization of the form factor.

Note:

9 pages (including a 2-pages EPAPS), 2 postscript figures, submitted to Phys.Rev.Lett Report-no: BABAR-PUB-06/069, SLAC-PUB-12253

13.20.He
14.40.Nd
12.38.Qk
12.15.Hh
electron positron: colliding beams
electron positron: annihilation
Upsilon(10570): electroproduction
B: pair production
B0: semileptonic decay
decay: form factor

References(22)

Figures(0)

CP Violation in the Renormalizable Theory of Weak Interaction

Makoto Kobayashi
(
- Kyoto U.
)
,
Toshihide Maskawa
(
- Kyoto U.
)

- Prog.Theor.Phys. 49 (1973) 652-657,
- Also in *Lichtenberg, D. B. (Ed.), Rosen, S. P. (Ed.): Developments In The Quark Theory Of Hadrons, Vol. 1*, 218-223.
•
DOI:
- 10.1143/PTP.49.652

B meson semileptonic form-factors from unquenched lattice QCD

Emel Dalgic
(
- Ohio State U.
)
,
Alan Gray
(
- Ohio State U.
)
,
Matthew Wingate
(
- Washington U., Seattle
)
,
Christine T.H. Davies
(
- Glasgow U.
)
,
G.Peter Lepage
(
- Cornell U., LEPP
)

et al.

- Phys.Rev.D 73 (2006) 074502,
- Phys.Rev.D 75 (2007) 119906 (erratum)
•
e-Print:
- hep-lat/0601021
•
DOI:
- 10.1103/PhysRevD.75.119906

Semileptonic D ---> pi/K and B ---> pi/D decays in 2+1 flavor lattice QCD

M. Okamoto
(
- Fermilab
)
,
C. Aubin
(
- Washington U., St. Louis
)
,
C. Bernard
(
- Washington U., St. Louis
)
,
Carleton E. DeTar
(
- Utah U.
)
,
M. Di Pierro
(
- De Paul U.
)

et al.

- Nucl.Phys.B Proc.Suppl. 140 (2005) 461-463
•
e-Print:
- hep-lat/0409116
•
DOI:
- 10.1016/j.nuclphysbps.2004.11.151

New results on $B \to \pi, K, \eta$ decay formfactors from light-cone sum rules

Patricia Ball
(
- Durham U., IPPP and
- Durham U.
)
,
Roman Zwicky
(
- Minnesota U., Theor. Phys. Inst.
)

- Phys.Rev.D 71 (2005) 014015
•
e-Print:
- hep-ph/0406232
•
DOI:
- 10.1103/PhysRevD.71.014015

Semileptonic meson decays in the quark model: An update

Daryl Scora
(
- York U., Canada
)
,
Nathan Isgur
(
- Jefferson Lab
)

- Phys.Rev.D 52 (1995) 2783-2812
•
e-Print:
- hep-ph/9503486
•
DOI:
- 10.1103/PhysRevD.52.2783

Study of the q**2 dependence of B ---> pi l nu and B ---> rho (omega) l nu decay and extraction of |V(u b)|

CLEO

Collaboration

•

S.B. Athar
(
- Florida U.
)

et al.

- Phys.Rev.D 68 (2003) 072003
•
e-Print:
- hep-ex/0304019
•
DOI:
- 10.1103/PhysRevD.68.072003

Study of $B \to \pi \ell \nu$ and $B \to \rho \ell \nu$ decays and determination of $|V_{ub}|$

BaBar

Collaboration

•

Bernard Aubert
(
- Annecy, LAPP
)

et al.

- Phys.Rev.D 72 (2005) 051102
•
e-Print:
- hep-ex/0507003
•
DOI:
- 10.1103/PhysRevD.72.051102

Measurement of the $B \to \pi \ell \nu$ Branching Fraction and Determination of $|V_{ub}|$ with Tagged $B$ Mesons

BaBar

Collaboration

•

Bernard Aubert
(
- Annecy, LAPP
)

et al.

- Phys.Rev.Lett. 97 (2006) 211801
•
e-Print:
- hep-ex/0607089
•
DOI:
- 10.1103/PhysRevLett.97.211801

Measurements of branching fractions and q**2 distributions for B ---> pi l nu and B ---> rho l nu decays with B ---> D(*) l nu decay tagging

Belle

Collaboration

•

T. Hokuue
(
- Nagoya U.
)

et al.

- Phys.Lett.B 648 (2007) 139-148
•
e-Print:
- hep-ex/0604024
•
DOI:
- 10.1016/j.physletb.2007.02.067

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

Reweighting of the form-factors in exclusive B ---> X l nu(l) decays

- Eur.Phys.J.C 38 (2004) 105-113
•
e-Print:
- hep-ex/0409046
•
DOI:
- 10.1140/epjc/s2004-02018-9

Comment on the heavy ---> light form-factors

Damir Becirevic
(
- Rome U. and
- INFN, Rome
)
,
Alexei B. Kaidalov
(
- Moscow, ITEP and
- Orsay, LPT
)

- Phys.Lett.B 478 (2000) 417-423
•
e-Print:
- hep-ph/9904490
•
DOI:
- 10.1016/S0370-2693(00)00290-2

Measurements of the $B \to D^{}$ form-factors using the decay $\bar{B}^0 \to D^{+} e^{-}$ electron-neutrino

BaBar

Collaboration

•

Bernard Aubert
(
- Annecy, LAPP
)

et al.

- Phys.Rev.D 74 (2006) 092004
•
e-Print:
- hep-ex/0602023
•
DOI:
- 10.1103/PhysRevD.74.092004

Measurement of the branching fraction for inclusive semileptonic $B$ meson decays

BaBar

Collaboration

•

Bernard Aubert
(
- Annecy, LAPP
)

et al.

- Phys.Rev.D 67 (2003) 031101
•
e-Print:
- hep-ex/0208018
•
DOI:
- 10.1103/PhysRevD.67.031101

Fitting using finite Monte Carlo samples

Roger J. Barlow
(
- Manchester U.
)
,
Christine Beeston
(
- Manchester U.
)

- Comput.Phys.Commun. 77 (1993) 219-228
•
DOI:
- 10.1016/0010-4655(93)90005-W

Review of Particle Physics

et al.

- J.Phys.G 33 (2006) 1-1232
•
DOI:
- 10.1088/0954-3899/33/1/001

$B_{d,s} \to \rho, \omega, K^*, \phi$ decay form-factors from light-cone sum rules revisited

- Phys.Rev.D 71 (2005) 014029
•
e-Print:
- hep-ph/0412079
•
DOI:
- 10.1103/PhysRevD.71.014029

Measurement of the $B^0 \to \pi^{-} \ell^{+} \nu$ form-factor shape and branching fraction, and determination of $|V_{ub}|$ with a loose neutrino reconstruction technique

BaBar

Collaboration

•

Bernard Aubert
(
- Barcelona U., ECM
)

et al.

e-Print:
- hep-ex/0607060

Fit to moment from B ---> X(c) l anti-nu and B ---> X(s) gamma decays using heavy quark expansions in the kinetic scheme

- Phys.Rev.D 73 (2006) 073008
•
e-Print:
- hep-ph/0507253
•
DOI:
- 10.1103/PhysRevD.73.073008

PHOTOS: A Universal Monte Carlo for QED radiative corrections. Version 2.0

Elisabetta Barberio
(
- CERN and
- Siegen U.
)
,
Zbigniew Was
(
- CERN and
- Cracow, INP
)

- Comput.Phys.Commun. 79 (1994) 291-308
•
DOI:
- 10.1016/0010-4655(94)90074-4

QED bremsstrahlung in semileptonic B and leptonic tau decays

E. Richter-Was
(
- CERN and
- Jagiellonian U.
)

- Phys.Lett.B 303 (1993) 163-169
•
DOI:
- 10.1016/0370-2693(93)90062-M

Comment on form-factor shape and extraction of |V(ub)| from B ---> pi l nu

Thomas Becher
(
- Fermilab
)
,
Richard J. Hill
(
- SLAC
)

- Phys.Lett.B 633 (2006) 61-69
•
e-Print:
- hep-ph/0509090
•
DOI:
- 10.1016/j.physletb.2005.11.063