First measurement of the inclusive branching ratio of b hadrons to phi mesons in Z0 decays

The inclusive branching fraction of φ mesons from the decay of b hadrons produced in Z decays was measured to be Br(b→ φ X)=0.0282±0.0013 (stat.)±0.0019 (syst.), using data collected by the OPAL detector at LEP.

Note:

12 pages, 3 figures, submitted to Phys. Lett. B Report-no: CERN-EP-2000-065

electron positron: colliding beams
electron positron: annihilation
Z0: electroproduction
Z0: hadronic decay
bottom: pair production
bottom meson: cascade decay
B: branching ratio
upper limit
B/s
Phi(1020): yield

References(25)

Figures(0)

Inclusive $\phi$ Production in $B$ Meson Decay

CLEO

Collaboration

•

D. Bortoletto
(
- Syracuse U.
)

et al.

- Phys.Rev.Lett. 56 (1986) 800
•
DOI:
- 10.1103/PhysRevLett.56.800

Inclusive production of $K^*(892)$ , $\rho^{0}(770)$ , and $\omega(783)$ mesons in the $\Upsilon$ energy region

ARGUS

Collaboration

•

H. Albrecht
(
- DESY
)

et al.

- Z.Phys.C 61 (1994) 1-18
•
DOI:
- 10.1007/BF01641882

Review of particle physics. Particle Data Group

et al.

- Eur.Phys.J.C 3 (1998) 1-794
•
DOI:
- 10.1007/s10052-998-0104-x

The OPAL detector at LEP

OPAL

Collaboration

•

K. Ahmet

et al.

- Nucl.Instrum.Meth.A 305 (1991) 275-319
•
DOI:
- 10.1016/0168-9002(91)90547-4

The OPAL silicon microvertex detector

OPAL

Collaboration

•

P.P. Allport
(
- Cambridge U.
)

et al.

- Nucl.Instrum.Meth.A 324 (1993) 34-52
•
DOI:
- 10.1016/0168-9002(93)90964-J

The OPAL silicon strip microvertex detector with two coordinate readout

OPAL

Collaboration

•

P.P. Allport
(
- Cambridge U.
)

et al.

- Nucl.Instrum.Meth.A 346 (1994) 476-495
•
DOI:
- 10.1016/0168-9002(94)90583-5

Measurement of the $Z^0$ line shape parameters and the electroweak couplings of charged leptons

OPAL

Collaboration

•

G. Alexander

et al.

- Z.Phys.C 52 (1991) 175-208

High-energy physics event generation with PYTHIA 5.7 and JETSET 7.4

Torbjorn Sjostrand
(
- CERN
)

- Comput.Phys.Commun. 82 (1994) 74-90,
- CERN Geneva - TH. 7111 (93/12,rec.Jan.94) 17 p. and e: CERN th-7111-93
•
DOI:
- 10.1016/0010-4655(94)90132-5

The Lund Monte Carlo for Jet Fragmentation and e+ e- Physics: Jetset Version 6.2

Torbjorn Sjostrand
(
- Lund U., Dept. Theor. Phys.
)

- Comput.Phys.Commun. 39 (1986) 347-407
•
DOI:
- 10.1016/0010-4655(86)90096-2

The Lund Monte Carlo for Jet Fragmentation and e+ e- Physics. Jetset Version 6.3: An Update

- Comput.Phys.Commun. 43 (1987) 367
•
DOI:
- 10.1016/0010-4655(87)90054-3

Status of Fragmentation Models

Torbjorn Sjostrand
(
- Lund U., Dept. Theor. Phys.
)

- Int.J.Mod.Phys.A 3 (1988) 751
•
DOI:
- 10.1142/S0217751X88000345

A Comparison of $b$ and ( $u d s^{)}$ quark jets to gluon jets

OPAL

Collaboration

•

G. Alexander

et al.

- Z.Phys.C 69 (1996) 543-560
•
DOI:
- 10.1007/s002880050059

Scaling Violations in Inclusive e+ e- Annihilation Spectra

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

The Detector simulation program for the OPAL experiment at LEP

OPAL

Collaboration

•

J. Allison
(
- Manchester U.
)

et al.

- Nucl.Instrum.Meth.A 317 (1992) 47-74
•
DOI:
- 10.1016/0168-9002(92)90593-S

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

Experimental Investigation of the Energy Dependence of the Strong Coupling Strength

JADE

Collaboration

•

S. Bethke
(
- Heidelberg U.
)

et al.

- Phys.Lett.B 213 (1988) 235-241
•
DOI:
- 10.1016/0370-2693(88)91032-5

An Improved measurement of R( $b$ ) using a double tagging method

OPAL

Collaboration

•

K. Ackerstaff

et al.

- Z.Phys.C 74 (1997) 1-17
•
DOI:
- 10.1007/s002880050366

Particle identification with the OPAL jet chamber

et al.

- Nucl.Instrum.Meth.A 314 (1992) 74-85
•
DOI:
- 10.1016/0168-9002(92)90501-T

Observations of pi - B charge - flavor correlations and resonant B pi and B K production

OPAL

Collaboration

•

R. Akers

et al.

- Z.Phys.C 66 (1995) 19-30
•
DOI:
- 10.1007/BF01496577

Combining heavy flavor electroweak measurements at LEP

ALEPH and
DELPHI and
L3 and
OPAL

Collaborations

- Nucl.Instrum.Meth.A 378 (1996) 101-115

Production of f(0)(980), f(2)(1270) and phi(1020) in hadronic Z0 decay

OPAL

Collaboration

•

K. Ackerstaff

et al.

- Eur.Phys.J.C 4 (1998) 19-28
•
e-Print:
- hep-ex/9802013
•
DOI:
- 10.1007/s100520050183

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

OPAL

Collaboration

•

G. Abbiendi

et al.

- Eur.Phys.J.C 13 (2000) 1-13
•
e-Print:
- hep-ex/9908001

Search for new physics in rare B decays

OPAL

Collaboration

•

G. Abbiendi

et al.

- Phys.Lett.B 476 (2000) 233-242
•
e-Print:
- hep-ex/0002008
•
DOI:
- 10.1016/S0370-2693(00)00162-3

A Measurement of R(b) using a double tagging method

OPAL

Collaboration

•

G. Abbiendi

et al.

- Eur.Phys.J.C 8 (1999) 217-239
•
e-Print:
- hep-ex/9810002
•
DOI:
- 10.1007/s100529901087

HERWIG: A Monte Carlo event generator for simulating hadron emission reactions with interfering gluons. Version 5.1 - April 1991

G. Marchesini
(
- Parma U. and
- INFN, Parma
)
,
B.R. Webber
(
- Cambridge U.
)
,
G. Abbiendi
(
- Padua U. and
- INFN, Padua
)
,
I.G. Knowles
(
- Glasgow U.
)
,
M.H. Seymour
(
- Cambridge U.
)

et al.

- Comput.Phys.Commun. 67 (1992) 465-508,
- Comput. Phys. Commun. 67 (1992) 465-508 and Hamburg DESY - DESY 91-048 (91/05,rec.Jul.) 49 p
•
DOI:
- 10.1016/0010-4655(92)90055-4