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A method of measuring cos(2 beta) using a time-dependent dalitz plot analysis of B-0 -> D-CP π+π-

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Latham, Thomas and Gershon, T. J.. (2009) A method of measuring cos(2 beta) using a time-dependent dalitz plot analysis of B-0 -> D-CP π+π-. Journal of Physics G-Nuclear and Particle Physics, Vol.36 (No.2). 025006. ISSN 0954-3899

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Official URL: http://dx.doi.org/10.1088/0954-3899/36/2/025006

Abstract

We present a feasibility study of a previously outlined method for measuring both the sine and the cosine of twice the Cabibbo-Kobayashi-Maskawa (CKM) Unitarity Triangle angle beta using a time-dependent Dalitz plot analysis of B-0 -> D pi(+)pi(-) decays, where the neutral D meson is reconstructed in decays to CP eigenstates. We show that this method can be used at the B factories to make a measurement of cos(2 beta) that is competitive with, or more precise than, other techniques using different quark-level transitions, while sin(2 beta) can be measured to a better precision than any existing measurement using b -> c (u) over bard transitions. Furthermore, this technique has great potential to be employed at LHCb.

Item Type:	Journal Article
Subjects:	Q Science > QC Physics
Divisions:	Faculty of Science > Physics
Library of Congress Subject Headings (LCSH):	Beta decay, Particles (Nuclear physics) -- Flavor
Journal or Publication Title:	Journal of Physics G-Nuclear and Particle Physics
Publisher:	IOP Publishing
ISSN:	0954-3899
Official Date:	February 2009
Volume:	Vol.36
Number:	No.2
Number of Pages:	14
Page Range:	025006
Identification Number:	10.1088/0954-3899/36/2/025006
Status:	Peer Reviewed
Publication Status:	Published
Access rights to Published version:	Restricted or Subscription Access
Funder:	Science and Technology Facilities Council (Great Britain) (STFC)
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URI:	http://wrap.warwick.ac.uk/id/eprint/28712