A Study of $B_s$ meson oscillation using $D_s$ - lepton correlations

From data collected around the Z resonance by the OPAL detector at LEP, a sample of Bs decays was obtained using Ds^-l^+ combinations, where the Ds^- was fully reconstructed in the phi pi-, K*0K- and Ks0K- decay channels or partially reconstructed in the phi l- nu (X) decay channel. These events were used to study Bs oscillation. The flavor (b or bbar) at decay was determined from the lepton charge while the flavor at production was determined from a combination of techniques. The expected sensitivity of the experiment is 4.1 ps-1. The experiment was not able to resolve the oscillatory behavior, and we deduced that the Bs oscillation frequency Delta m_s > 1.0 ps-1 at the 95% confidence level.

electron positron: colliding beams
electron positron: annihilation
Z0: electroproduction
Z0: hadronic decay
bottom: pair production
B/s0 anti-B/s0: oscillation
B/s0: semileptonic decay
correlation: (D/s- lepton+)
particle identification: flavor
B/s0: mass difference

References(33)

Figures(0)

Review of particle physics. Particle Data Group

et al.

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

Implications of the top quark mass measurement for the CKM parameters, x(s) and CP asymmetries

Ahmed Ali
(
- CERN
)
,
David London
(
- Montreal U.
)

- Z.Phys.C 65 (1995) 431-444
•
e-Print:
- hep-ph/9408332
•
DOI:
- 10.1007/BF01556131

Naturally small x(s)?'

Yosef Nir
(
- Weizmann Inst.
)

- Phys.Lett.B 327 (1994) 85-89
•
e-Print:
- hep-ph/9402348
•
DOI:
- 10.1016/0370-2693(94)91533-4

A Study of $B$ meson oscillations using hadronic $Z^0$ decays containing leptons

OPAL

Collaboration

•

K. Ackerstaff

et al.

- Z.Phys.C 76 (1997) 401-415
•
e-Print:
- hep-ex/9707009
•
DOI:
- 10.1007/s002880050564

An Updated study of B meson oscillations using dilepton events

OPAL

Collaboration

•

K. Ackerstaff

et al.

- Z.Phys.C 76 (1997) 417-423
•
e-Print:
- hep-ex/9707010
•
DOI:
- 10.1007/s002880050565

Search for B(s)0 anti-B(s)0 oscillations

DELPHI

Collaboration

•

W. Adam

et al.

- Phys.Lett.B 414 (1997) 382-400
•
DOI:
- 10.1016/S0370-2693(97)01188-X

A search for $B_s^0 \overline{B}_s^0$ oscillations using the semileptonic decay $B_s^0 \to \phi \ell^+ X \nu$

CDF

Collaboration

•

F. Abe
(
- KEK, Tsukuba
)

et al.

- Phys.Rev.Lett. 82 (1999) 3576-3580
•
DOI:
- 10.1103/PhysRevLett.82.3576

Study of the B(s)0 anti-B(s)0 oscillation frequency using D(s)- lepton+ combinations in Z decays

ALEPH

Collaboration

•

D. Buskulic
(
- Annecy, LAPP
)

et al.

- Phys.Lett.B 377 (1996) 205-221
•
DOI:
- 10.1016/0370-2693(96)00451-0

Search for B0(s) oscillations using inclusive lepton events

ALEPH

Collaboration

•

R. Barate
(
- Annecy, LAPP
)

et al.

- Eur.Phys.J.C 7 (1999) 553-569,
- Eur. Phys. J. C12 (2000) 181. (Erratum)
•
e-Print:
- hep-ex/9811018
•
DOI:
- 10.1007/s100529901108

A Study of B0(S) meson oscillation using hadronic Z0 decays containing leptons

OPAL

Collaboration

•

G. Abbiendi

et al.

- Eur.Phys.J.C 11 (1999) 587-598
•
e-Print:
- hep-ex/9907061
•
DOI:
- 10.1007/s100520050658

Measurements of the $B_s^0$ and $\Lambda_b^0$ lifetimes

OPAL

Collaboration

•

K. Ackerstaff

et al.

- Phys.Lett.B 426 (1998) 161-179
•
e-Print:
- hep-ex/9802002
•
DOI:
- 10.1016/S0370-2693(98)00289-5

Mathematical methods for B0 anti-B0 oscillation analyses

H.G. Moser
(
- Munich, Max Planck Inst.
)
,
A. Roussarie
(
- DAPNIA, Saclay
)

- Nucl.Instrum.Meth.A 384 (1997) 491-505
•
DOI:
- 10.1016/S0168-9002(96)00887-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

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

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

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