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Author
LHCb Collaboration (Aaij, R. et al)
;
Jashal, B.K.
;
Martinez-Vidal, F.
;
Oyanguren, A.
;
Remon Alepuz, C.
;
Ruiz Vidal, J.
;
Sanderswood, I.
Title
Measurement of the charm mixing parameter y(CP)-y(CP)(K pi) using two-body D-0 meson decays
Type
Journal Article
Year
2022
Publication
Physical Review D
Abbreviated Journal
Phys. Rev. D
Volume
105
Issue
9
Pages
092013 - 17pp
Keywords
Abstract
A measurement of the ratios of the effective decay widths of D-0 -> pi(-)pi(+) and D-0 -> K- K+ decays over that of D-0 -> K-pi(+) decays is performed with the LHCb experiment using proton-proton collisions at a centre-of-mass energy of 13 TeV, corresponding to an integrated luminosity of 6 fb(-1). These observables give access to the charm mixing parameters y(CP)(pi pi) – y(CP)(K pi )and y(CP)(KK) -y(CP)(K pi), and are measured as y(CP)(pi pi) – y(CP)(K pi) = (6.57 +/- 0.53 +/- 0.16) x 10(-3), y(CP)(KK) – y(CP)(K pi) = (7.08 +/- 0.30 +/- 0.14) x 10(-3), where the first uncertainties are statistical and the second systematic. The combination of the two measurements is Y-CP – y(CP)(K pi) = (6.96 +/- 0.26 +/- 0.13) x 10(-3), which is four times more precise than the previous world average.
Address
[de Souza Leite, J. Baptista; Bediaga, I; Torres, M. Cruz; Carneiro Da Graca, U. De Freitas; De Miranda, J. M.; dos Reis, A. C.; Falcao, L. N.; Gomes, A.; Massafferri, A.; Machado, D. Torres] Ctr Brasileiro Pesquisas Fis CBPF, Rio De Janeiro, Brazil
Corporate Author
Thesis
Publisher
Amer Physical Soc
Place of Publication
Editor
Language
English
Summary Language
Original Title
Series Editor
Series Title
Abbreviated Series Title
Series Volume
Series Issue
Edition
ISSN
2470-0010
ISBN
Medium
Area
Expedition
Conference
Notes
WOS:000810236400008
Approved
no
Is ISI
yes
International Collaboration
yes
Call Number
IFIC @ pastor @
Serial
5272
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