Measurement of the CP -Violating Phase φs in B ¯ s0 → Ds+ Ds- Decays
- R. Aaij,
- C. Abellán Beteta,
- B. Adeva,
- M. Adinolfi,
- A. Affolder,
- Z. Ajaltouni
- National Institute for Subatomic Physics,
- University of Zurich,
- University of Santiago de Compostela,
- University of Bristol,
- University of Liverpool,
- Université Clermont Auvergne
Research Output: Contribution to journal Article Peer-review
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Abstract
We present a measurement of the CP-violating weak mixing phase φs using the decay B¯s0→Ds+Ds- in a data sample corresponding to 3.0fb-1 of integrated luminosity collected with the LHCb detector in pp collisions at center-of-mass energies of 7 and 8 TeV. An analysis of the time evolution of the system, which does not use the constraint |λ|=1 to allow for the presence of CP violation in decay, yields φs=0.02±0.17(stat)±0.02(syst)rad, |λ|=0.91-0.15+0.18(stat)±0.02(syst). This result is consistent with the standard model expectation.
Publication Information
Output type
Research Output: Contribution to journal Article Peer-review
Original language
EnglishArticle number
211801Journal (Volume, Issue Number)
Physical Review Letters (Volume 113, Issue 21)Publication milestones
- Published - 20/11/2014
Publication status
Published - 20/11/2014
ISSN
0031-9007Publication IDs
- Scopus: 84915819170
- WOS: 000345462900002
Funding Details
FundersFunding numbers
NSF
1205805
NSF
-SNF
152784
SNF
-