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Author
LHCb Collaboration (Aaij, R. et al)
;
Oyanguren, A.
;
Ruiz Valls, P.
Title
First Measurement of the CP-Violating Phase in B-s(0) -> phi phi Decays
Type
Journal Article
Year
2013
Publication
Physical Review Letters
Abbreviated Journal
Phys. Rev. Lett.
Volume
110
Issue
24
Pages
241802 - 8pp
Keywords
Abstract
A first flavor-tagged measurement of the time-dependent CP-violating asymmetry in B-s(0) -> phi phi decays is presented. In this decay channel, the CP-violating weak phase arises due to CP violation in the interference between B-s(0)-(B) over bar (0)(s) mixing and the b -> s (s) over bars gluonic penguin decay amplitude. Using a sample of pp collision data corresponding to an integrated luminosity of 1.0 fb(-1) and collected at a center-of-mass energy of 7 TeV with the LHCb detector, 880 B-s(0) -> phi phi signal decays are obtained. The CP-violating phase is measured to be in the interval [-2.46, -0.76] rad at a 68% confidence level. The p value of the standard model prediction is 16%.
Address
CBPF, Rio De Janeiro, Brazil
Corporate Author
Thesis
Publisher
Amer Physical Soc
Place of Publication
Editor
Language
English
Summary Language
Original Title
Series Editor
Series Title
Abbreviated Series Title
Series Volume
Series Issue
Edition
ISSN
0031-9007
ISBN
Medium
Area
Expedition
Conference
Notes
WOS:000320307400005
Approved
no
Is ISI
yes
International Collaboration
yes
Call Number
IFIC @ pastor @
Serial
1472
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