Measurement of the branching fraction for D0 ---> K- pi+

The branching fraction for D 0 → K − π + is measured with the statistics collected by ALEPH from 1991 to 1994. The method is based on the comparison between the rate for the reconstructed D ∗+ → D 0 π + , D 0 → K − π + decay chain and the rate for inclusive soft pion production at low transverse momentum with respect to the nearest jet. The result is B (D 0 → K − π + 0 = (3.90 ± 0.09 ± 0.12)%

electron positron: colliding beams
electron positron: annihilation
Z0: electroproduction
Z0: hadronic decay
D*(2010): cascade decay
D0: hadronic decay
transverse momentum: spectrum
D0: branching ratio
ALEPH
experimental results

References(18)

Figures(0)

Measurement of the D0 $\to K^- \pi^+$ Branching Fraction

HRS

Collaboration

•

S. Abachi
(
- Argonne (main) and
- Indiana U. and
- LBL, Berkeley and
- Michigan U. and
- Purdue U.
)

et al.

- Phys.Lett.B 205 (1988) 411,
- SLAC Heavy Flavors 1987:401
•
DOI:
- 10.1016/0370-2693(88)91689-9

ALEPH: A detector for electron-positron annnihilations at LEP

ALEPH

Collaboration

•

D. Decamp
(
- Annecy, LAPP
)

et al.

- Nucl.Instrum.Meth.A 294 (1990) 121-178,
- Nucl.Instrum.Meth.A 303 (1991) 393 (erratum)
•
DOI:
- 10.1016/0168-9002(90)91831-U

Performance of the ALEPH detector at LEP

ALEPH

Collaboration

•

D. Buskulic
(
- Annecy, LAPP
)

et al.

- Nucl.Instrum.Meth.A 360 (1995) 481-506
•
DOI:
- 10.1016/0168-9002(95)00138-7

Improved measurements of electroweak parameters from $Z$ decays into fermion pairs

ALEPH

Collaboration

•

D. Decamp
(
- Annecy, LAPP
)

et al.

- Z.Phys.C 53 (1992) 1-20
•
DOI:
- 10.1007/BF01483868

Production and decay of charmed mesons at the Z resonance

ALEPH

Collaboration

•

D. Decamp
(
- Annecy, LAPP
)

et al.

- Phys.Lett.B 266 (1991) 218-230
•
DOI:
- 10.1016/0370-2693(91)90769-M

Production Cross-section and Electroweak Asymmetry of $D^*$ and $D$ Mesons Produced in $e^+ e^-$ Annihilations at 29-{GeV}

et al.

- Phys.Lett.B 206 (1988) 551-556
•
DOI:
- 10.1016/0370-2693(88)91628-0

Measurement of the partial width of the decay of the Z0 into charm quark pairs

DELPHI

Collaboration

•

P. Abreu
(
- LIP, Lisbon
)

et al.

- Phys.Lett.B 252 (1990) 140-148
•
DOI:
- 10.1016/0370-2693(90)91096-T

Measurement of the absolute branching fraction for D0 ---> K- pi+

CLEO

Collaboration

•

D.S. Akerib
(
- Caltech
)

et al.

- Phys.Rev.Lett. 71 (1993) 3070-3074
•
DOI:
- 10.1103/PhysRevLett.71.3070

Experimental Studies on Multi-Jet Production in e+ e- Annihilation at PETRA Energies

JADE

Collaboration

•

W. Bartel
(
- DESY
)

et al.

- Z.Phys.C 33 (1986) 23,
•
DOI:
- 10.1007/BF01410449

Production of charmed mesons in Z decays

ALEPH

Collaboration

•

D. Buskulic
(
- Annecy, LAPP
)

et al.

- Z.Phys.C 62 (1994) 1-14
•
DOI:
- 10.1007/BF01559519

Measurement of the multiplicity of charm quark pairs from gluons in hadronic Z0 decays

OPAL

Collaboration

•

R. Akers
(
- Manchester U.
)

et al.

- Phys.Lett.B 353 (1995) 595-605
•
DOI:
- 10.1016/0370-2693(95)00633-V

A Measurement of the production of D*+- mesons on the Z0 resonance

OPAL

Collaboration

•

R. Akers

et al.

- Z.Phys.C 67 (1995) 27-44
•
DOI:
- 10.1007/BF01564819

Scaling Violations in Inclusive e+ e- Annihilation Spectra

- Phys.Rev.D 27 (1983) 105
•
DOI:
- 10.1103/PhysRevD.27.105

Heavy flavor production and decay with prompt leptons in the ALEPH detector

ALEPH

Collaboration

•

D. Buskulic
(
- Annecy, LAPP
)

et al.

- Z.Phys.C 62 (1994) 179-198
•
DOI:
- 10.1007/BF01560237

Review of particle physics. Particle Data Group

et al.

- Phys.Rev.D 54 (1996) 1, 1-720
•
DOI:
- 10.1103/PhysRevD.54.1

PHOTOS: A Universal Monte Carlo for QED radiative corrections in decays

- Comput.Phys.Commun. 66 (1991) 115-128,
- Comput. Phys. Commun. 66 (1991) 115-128 and CERN Geneva - TH. 5857 (90,rec.Oct.) 21 p
•
DOI:
- 10.1016/0010-4655(91)90012-A

A Reanalysis of Charmed d Meson Branching Fractions

MARK-III

Collaboration

•

J. Adler

et al.

- Phys.Rev.Lett. 60 (1988) 89,
•
DOI:
- 10.1103/PhysRevLett.60.89

Measurement of the absolute branching fractions for D0 decays into K- pi+, K- pi+ pi+ pi-, anti-K0 pi+ pi-

ARGUS

Collaboration

•

H. Albrecht
(
- DESY and
- DESY, Zeuthen
)

et al.

- Phys.Lett.B 340 (1994) 125-128
•
DOI:
- 10.1016/0370-2693(94)91308-0