Measurement of the lifetime difference between $B_s$ mass eigenstates - INSPIRE

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Measurement of the lifetime difference between $B_s$ mass eigenstates

CDF

Collaboration

Dec, 2004

9 pages

Published in:

Phys.Rev.Lett. 94 (2005) 101803

e-Print:

hep-ex/0412057 [hep-ex]

DOI:

10.1103/PhysRevLett.94.101803

PDG:

\Gamma _{\mathit L}/\Gamma

{{\mathit B}^{0}}

\rightarrow

{{\mathit J / \psi}{(1S)}}{{\mathit K}^{*}{(892)}^{0}}

Report number:

FERMILAB-PUB-04-432-E

Experiments:

FNAL-E-0830

View in:

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Abstract:

We present measurements of the lifetimes and polarization amplitudes for B_s --> J/psi phi and B_d --> J/psi K*0 decays. Lifetimes of the heavy (H) and light (L) mass eigenstates in the B_s system are separately measured for the first time by determining the relative contributions of amplitudes with definite CP as a function of the decay time. Using 203 +/- 15 B_s decays, we obtain tau_L = (1.05 +{0.16}/-{0.13} +/- 0.02) ps and tau_H = (2.07 +{0.58}/-{0.46} +/- 0.03) ps. Expressed in terms of the difference DeltaGamma_s and average Gamma_s, of the decay rates of the two eigenstates, the results are DeltaGamma_s/Gamma_s = (65 +{25}/-{33} +/- 1)%, and DeltaGamma_s = (0.47 +{0.19}/-{0.24} +/- 0.01) inverse ps.

Note:

8 pages, 3 figures, 2 tables: as published in Physical Review Letters on 16 March 2005: revisions are for length and typesetting only, no changes in results or conclusions Report-no: Fermilab-PUB-04-432-E Journal-ref: Phys.Rev.Lett. 94 (2005) 101803 DOI: 10.1103/PhysRevLett.94.101803

11.30.Er
13.25.Hw
anti-p p: colliding beams
anti-p p: inclusive reaction
bottom: pair production
B/s0: hadronic decay
B0: hadronic decay
J/psi(3100)
Phi(1020)
K*(892)

References(9)

Figures(0)

Review of particle physics. Particle Data Group

S. Eidelman
(
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)
,
K.G. Hayes
(
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)
,
K.A. Olive
(
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)
,
M. Aguilar-Benitez
(
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)
,
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(
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•
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M. Beneke
(
- CERN
)
,
G. Buchalla
(
- CERN
)
,
C. Greub
(
- Bern U.
)
,
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(
- Munich, Max Planck Inst.
)
,
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•
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A.S. Dighe
(
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)
,
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(
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)
,
C.S. Kim
(
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)
,
T. Yoshikawa
(
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)

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Amol S. Dighe
(
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)
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Isard Dunietz
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,
Harry J. Lipkin
(
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,
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•
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Measurement of the decay amplitudes of $B^0 \to J/\psi K^{*0}$ and $B_s^0 \to J/\psi \phi$ decays

CDF

Collaboration

•

T. Affolder
(
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)

et al.

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•
e-Print:
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Measurement of the $B \to J/\psi K^*(892)$ decay amplitudes

BaBar

Collaboration

•

Bernard Aubert
(
- Annecy, LAPP
)

et al.

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e-Print:
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Measurements of branching fractions and decay amplitudes in $B \to J/\psi K^{*}$ decays

Belle

Collaboration

•

Kazuo Abe
(
- KEK, Tsukuba
)

et al.

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•
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•
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