Measurement of A(b) from the left-right forward - backward asymmetry of b quark production in Z0 decays using a momentum weighted track charge technique - INSPIRE

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Measurement of A(b) from the left-right forward - backward asymmetry of b quark production in Z0 decays using a momentum weighted track charge technique

SLD

Collaboration

•

K. Abe

Sep, 1994

20 pages

Published in:

Phys.Rev.Lett. 74 (1995) 2890-2894

DOI:

10.1103/PhysRevLett.74.2890

Report number:

SLAC-PUB-6644,
LBL-36200

Experiments:

SLAC-SLC-SLD

View in:

reference search57 citations

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Abstract: (APS)

Using an impact parameter tag to select an enriched sample of Z0→bb¯ events, and the net momentum-weighted track charge to identify the sign of the charge of the underlying b quark, we have measured the left-right forward-backward asymmetry for b quark production as a function of polar angle. Based on 1.8pb−1 of Z0 decay data produced with a mean electron beam polarization of Pe=63%, this yields a direct measurement of the extent of parity violation in the Zbb coupling of Ab=0.87±0.11(stat)±0.09(syst).

electron positron: colliding beams
colliding beams: electron positron
electron positron: annihilation
annihilation: electron positron
Z0: nonleptonic decay
nonleptonic decay: Z0
bottom: pair production
pair production: bottom
angular distribution: asymmetry
asymmetry: angular distribution

References(24)

Figures(0)

[1]

Precision Measurements of Final State Weak Coupling From Polarized Electron - Positron Annihilation

A. Blondel
(
- CERN
)
,
B.W. Lynn
(
- Stanford U., Phys. Dept.
)
,
F.M. Renard
(
- Montpellier U.
)
,
C. Verzegnassi
(
- Montpellier U.
)

- Nucl.Phys.B 304 (1988) 438-450
•
DOI:
- 10.1016/0550-3213(88)90636-0

[2]

Measurement of A(b) and A(c) from the left-right forward - backward asymmetry of leptons in hadronic events at the Z0 resonance

SLD

Collaboration

•

K. Abe

et al.

- Phys.Rev.Lett. 74 (1995) 2895-2899
•
DOI:
- 10.1103/PhysRevLett.74.2895

[3]

Precise measurement of the left-right cross-section asymmetry in Z boson production by e+ e- collisions

SLD

Collaboration

•

K. Abe

et al.

- Phys.Rev.Lett. 73 (1994) 25-29
•
e-Print:
- hep-ex/9404001
•
DOI:
- 10.1103/PhysRevLett.73.25

[4]

Performance of the SLD central drift chamber

et al.

- IEEE Trans.Nucl.Sci. 42 (1995) 451-458
•
DOI:
- 10.1109/23.467802

[5]

Design and performance of the SLD vertex detector, a 120-MPixel tracking system

SLD

Collaboration

•

G. Agnew
(
- Brunel U.
)

et al.

- AIP Conf.Proc. 272 (1993) 1862-1866,
- Dallas HEP 1992:1862-1866

[6]

A QCD Test for Jets

Edward Farhi
(
- Harvard U.
)

- Phys.Rev.Lett. 39 (1977) 1587-1588
•
DOI:
- 10.1103/PhysRevLett.39.1587

[7]

The Lead liquid argon sampling calorimeter of the SLD detector

D. Axen
(
- British Columbia U.
)
,
S. Bougerolle
(
- British Columbia U.
)
,
R. Sobie
(
- British Columbia U.
)
,
G. Eigen
(
- Caltech
)
,
D. Hitlin
(
- Caltech
)

et al.

- Nucl.Instrum.Meth.A 328 (1993) 472-494
•
DOI:
- 10.1016/0168-9002(93)90664-4

[8]

Measurements of R(b) with impact parameters and displaced vertices

SLD

Collaboration

•

K. Abe

et al.

- Phys.Rev.D 53 (1996) 1023-1038
•
DOI:
- 10.1103/PhysRevD.53.1023

[9]

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

[10]

LEP Electroweak Heavy Flavors Group, LEPHF/94-03, July, 1994

[11]

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

[12]

Predictions of {QCD} Fragmentation Models in $e^+ e^-$ Annihilation Up to $\sqrt{s}=200$ -{GeV}

P.N. Burrows
(
- Oxford U.
)

- Z.Phys.C 41 (1988) 375
•
DOI:
- 10.1007/BF01585621

A Measurement of Global Event Shape Distributions in the Hadronic Decays of the $\Z^0$

OPAL

Collaboration

•

M.Z. Akrawy

et al.

- Z.Phys.C 47 (1990) 505-522
•
DOI:
- 10.1007/BF01552315

[13]

Scaling Violations in Inclusive e+ e- Annihilation Spectra

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

[14]

Heavy Flavor Production in $Z$ Decays

ALEPH

Collaboration

•

D. Decamp
(
- Annecy, LAPP
)

et al.

- Phys.Lett.B 244 (1990) 551-565
•
DOI:
- 10.1016/0370-2693(90)90362-A

Measurements of Z0 ---> b anti-b decays and the semileptonic branching ratio Br (b ---> lepton X)

L3

Collaboration

•

B. Adeva
(
- CERN
)

et al.

- Phys.Lett.B 261 (1991) 177-187
•
DOI:
- 10.1016/0370-2693(91)91347-X

A Study of heavy flavor production using muons in hadronic Z0 decays

OPAL

Collaboration

•

M.Z. Akrawy
(
- Queen Mary, U. of London
)

et al.

- Phys.Lett.B 263 (1991) 311-324
•
DOI:
- 10.1016/0370-2693(91)90606-Q

Measurement of the partial width of the Z0 into b anti-b final states using their semileptonic decays

DELPHI

Collaboration

•

P. Abreu

et al.

- Z.Phys.C 56 (1992) 47-62
•
DOI:
- 10.1007/BF01589706

[15]

Semileptonic B and D Decays in the Quark Model

- Phys.Rev.D 39 (1989) 799-818
•
DOI:
- 10.1103/PhysRevD.39.799

[16]

Two-Body Decays of B Mesons

CLEO

Collaboration

•

R. Giles
(
- Harvard U.
)

et al.

- Phys.Rev.D 30 (1984) 2279
•
DOI:
- 10.1103/PhysRevD.30.2279

Measurement of R and determination of the charged particle multiplicity in e+ e- annihilation at s**(1/2) around 10-GeV

ARGUS

Collaboration

•

H. Albrecht
(
- DESY
)

et al.

- Z.Phys.C 54 (1992) 13-20
•
DOI:
- 10.1007/BF01881704

Inclusive production of charged pions, kaons and protons in upsilon (4S) decays

ARGUS

Collaboration

•

H. Albrecht
(
- DESY
)

et al.

- Z.Phys.C 58 (1993) 191-198
•
DOI:
- 10.1007/BF01560337

[17]

Inclusive and exclusive decays of B mesons to final states including charm and charmonium mesons

CLEO

Collaboration

•

D. Bortoletto
(
- Purdue U.
)

et al.

- Phys.Rev.D 45 (1992) 21-35
•
DOI:
- 10.1103/PhysRevD.45.21

[18]

B0 - anti-B0 mixing at LEP

Duccio Abbaneo
(
- Pisa, Scuola Normale Superiore and
- INFN, Pisa
)

- Italy INFN - INFN-PI-AE-94-05 (94/05,rec.Jun.) 8 p,