Journal article
Model-independent measurement of the CKM angle γ using B0 → DK∗0 decays with D → K 0 S π + π − and K 0 S K+K−
- Abstract:
- A binned Dalitz plot analysis of the decays B 0 → DK ∗0, with D → K 0 S π + π − and D → K 0 S K + K −, is performed to measure the observables x ± and y ±, which are related to the CKM angle γ and the hadronic parameters of the decays. The D decay strong phase variation over the Dalitz plot is taken from measurements performed at the CLEO-c experiment, making the analysis independent of the D decay model. With a sample of proton-proton collision data, corresponding to an integrated luminosity of 3.0 fb−1, collected by the LHCb experiment, the values of the CP violation parameters are found to be x + = 0.05 ± 0.35 ± 0.02, x − = −0.31 ± 0.20 ± 0.04, y + = −0.81 ± 0.28 ± 0.06 and y − = 0.31 ± 0.21 ± 0.05, where the first uncertainties are statistical and the second systematic. These observables correspond to values γ = (71 ± 20)°, and . The parameters and are the magnitude ratio and strong phase difference between the suppressed and favoured B 0 decay amplitudes, and have been measured in a region of ±50 MeV/c 2 around the K ∗(892)0 mass and with the magnitude of the cosine of the K ∗(892)0 helicity angle larger than 0.4.
- Publication status:
- Published
- Peer review status:
- Peer reviewed
Actions
Access Document
- Files:
-
-
(Preview, Version of record, pdf, 1.4MB, Terms of use)
-
- Publisher copy:
- 10.1007/JHEP06(2016)131
Authors
- Publisher:
- Springer
- Journal:
- Journal of High Energy Physics More from this journal
- Volume:
- 2016
- Issue:
- 6
- Article number:
- 131
- Publication date:
- 2016-06-21
- Acceptance date:
- 2016-05-20
- DOI:
- EISSN:
-
1029-8479
- Language:
-
English
- Keywords:
- Pubs id:
-
pubs:614611
- UUID:
-
uuid:9902081d-4b3b-4f2a-b5ce-98d90cf403dd
- Local pid:
-
pubs:614611
- Source identifiers:
-
614611
- Deposit date:
-
2016-06-30
Terms of use
- Copyright holder:
- CERN
- Copyright date:
- 2016
- Rights statement:
- Copyright CERN, for the benefit of the LHCb Collaboration. This article is distributed under the terms of the Creative Commons Attribution License (CC-BY 4.0), which permits any use, distribution and reproduction in any medium, provided the original author(s) and source are credited. All figures and tables, along with any supplementary material and additional information, are available at https://lhcbproject.web.cern.ch/lhcbproject/Publications/LHCbProjectPublic/LHCb-PAPER-2016-006.html
- Licence:
- CC Attribution (CC BY)
If you are the owner of this record, you can report an update to it here: Report update to this record