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Back, J. J.; Craik, Daniel; Dossett, D.; Gershon, T. J.; Kreps, Michal; Latham, Thomas; Pilar, T.; Poluektov, Anton; Reid, Matthew M.; Silva Coutinho, R.; Wallace, Charlotte; Whitehead, M. (Mark); Williams, M. P.; HASH(0x55942ef46280) (2013)
Publisher: Elsevier Science BV
Journal: Physics Letters B
Languages: English
Types: Article
Subjects: QC, High Energy Physics - Experiment

Classified by OpenAIRE into

A search for CP   violation in the phase-space structures of D0D0 and D¯0 decays to the final states KK+ππ+K−K+π−π+ and ππ+π+ππ−π+π+π− is presented. The search is carried out with a data set corresponding to an integrated luminosity of 1.0 fb−11.0 fb−1 collected in 2011 by the LHCb experiment in pp   collisions at a centre-of-mass energy of 7 TeV7 TeV. For the KK+ππ+K−K+π−π+ final state, the four-body phase space is divided into 32 bins, each bin with approximately 1800 decays. The p-value under the hypothesis of no CP violation is 9.1%, and in no bin is a CP   asymmetry greater than 6.5% observed. The phase space of the ππ+π+ππ−π+π+π− final state is partitioned into 128 bins, each bin with approximately 2500 decays. The p-value under the hypothesis of no CP violation is 41%, and in no bin is a CP asymmetry greater than 5.5% observed. All results are consistent with the hypothesis of no CP violation at the current sensitivity.
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