Please use this identifier to cite or link to this item: http://repository.vnu.edu.vn/handle/VNU_123/27232
Title: Measurement of mixing and CP violation parameters in two-body charm decays
Authors: Aaij, R.
Abellan Beteta, C.
Adeva, B
Keywords: Hadron-Hadron Scattering;LIFETIME;EVENT
Issue Date: 2012
Publisher: SPRINGER, 233 SPRING ST, NEW YORK, NY 10013 USA
Citation: ISIKNOWLEDGE
Abstract: A study of mixing and indirect CP violation in D 0 mesons through the deter-mination of the parameters y CP and AΓ is presented. The parameter y CP is the deviation from unity of the ratio of effective lifetimes measured in D 0 decays to the CP eigenstate K + K − with respect to decays to the Cabibbo favoured mode K − π + . The result mea-sured using data collected by LHCb in 2010, corresponding to an integrated luminosity of 29pb −1 , is y CP = (5.5 ± 6.3 stat ± 4.1 syst ) × 10 −3 . The parameter AΓ is the asymmetry of effective lifetimes measured in decays of D 0 and D 0 mesons to K + K − . The result is AΓ = (−5.9 ± 5.9 stat ± 2.1 syst ) × 10 −3 . A data-driven technique is used to correct for lifetime-biasing effects.
Description: TNS06893; JOURNAL OF HIGH ENERGY PHYSICS Issue: 4 Article Number: 129 Published: APR 2012
URI: http://repository.vnu.edu.vn/handle/VNU_123/27232
http://link.springer.com/article/10.1007%2FJHEP04%282012%29129
ISSN: 1029-8479
Appears in Collections:Bài báo của ĐHQGHN trong Web of Science

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