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Measurement of time-dependent CP asymmetries and the CP-odd fraction in the decay B-0 -> D*+D*-

Aubert, B; Barate, R; Boutigny, D; Gaillard, JM; Hicheur, A; Karyotakis, Y; Lees, JP; ... BABAR Collaboration, ; + view all (2003) Measurement of time-dependent CP asymmetries and the CP-odd fraction in the decay B-0 -> D*+D*-. PHYS REV LETT , 91 (13) , Article 131801. 10.1103/PhysRevLett.91.131801. Green open access

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Abstract

We present a measurement of time-dependent CP asymmetries and an updated determination of the CP-odd fraction in the decay B-0-->D*+D*- using a data sample of 88x10(6)B (B) over bar pairs collected by the BABAR detector at the PEP-II B Factory at SLAC. We determine the CP-odd fraction to be 0.063+/-0.055(stat)+/-0.009(syst). The time-dependent CP asymmetry parameters Im(lambda(+)) and \lambda(+)\ are determined to be 0.05+/-0.29(stat)+/-0.10(syst) and 0.75+/-0.19(stat)+/-0.02(syst), respectively. The standard model predicts these parameters to be -sin2beta and 1, respectively, in the absence of penguin diagram contributions.

Type: Article
Title: Measurement of time-dependent CP asymmetries and the CP-odd fraction in the decay B-0 -> D*+D*-
Open access status: An open access version is available from UCL Discovery
DOI: 10.1103/PhysRevLett.91.131801
Publisher version: http://dx.doi.org/10.1103/PhysRevLett.91.131801
Language: English
Additional information: © 2003 The American Physical Society
Keywords: VIOLATION
UCL classification: UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Brain Sciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Brain Sciences > UCL Queen Square Institute of Neurology
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Brain Sciences > UCL Queen Square Institute of Neurology > Brain Repair and Rehabilitation
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences
URI: https://discovery.ucl.ac.uk/id/eprint/1303632
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