|
Title
|
|
|
|
Measurement of lifetime and decay-width difference in decays
|
|
|
Author
|
|
|
|
|
|
|
Institution/Organisation
|
|
|
|
CDF Collaboration
|
|
|
Abstract
|
|
|
|
| We measure the mean lifetime τ=2/(ΓL+ΓH) and the decay-width difference ΔΓ=ΓL-ΓH of the light and heavy mass eigenstates of the Bs0 meson, BsL0 and BsH0, in Bs0→J/ψϕ decays using 1.7 fb-1 of data collected with the CDF II detector at the Fermilab Tevatron pp̅ collider. Assuming CP conservation, a good approximation for the Bs0 system in the standard model, we obtain ΔΓ=0.076-0.063+0.059(stat)±0.006(syst) ps-1 and τ=1.52±0.04(stat)±0.02(syst) ps, the most precise measurements to date. Our constraints on the weak phase and ΔΓ are consistent with CP conservation. |
|
|
|
Language
|
|
|
|
English
|
|
|
Source (journal)
|
|
|
|
Physical review letters. - New York, N.Y., 1958, currens
|
|
|
Publication
|
|
|
|
New York, N.Y.
:
American Physical Society
,
2008
|
|
|
ISSN
|
|
|
|
0031-9007
[print]
1079-7114
[online]
|
|
|
DOI
|
|
|
|
10.1103/PHYSREVLETT.100.121803
|
|
|
Volume/pages
|
|
|
|
100
:12
(2008)
, p. 121803,1-121803,7
|
|
|
ISI
|
|
|
|
000254473800017
|
|
|
Full text (Publisher's DOI)
|
|
|
|
|
|
|
Full text (open access)
|
|
|
|
|
|