Measurement of indirect CP -violating asymmetries in D0 →k+K- and D0 →π+π- decays at CDF
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, Journal Article
Aaltonen, T; Amerio, S; Amidei, D; Anastassov, A; Annovi, A; Antos, J; Apollinari, G; Appel, JA; Arisawa, T; Artikov, A; Asaadi, J; Azfar, F ...
Published in: Physical Review D - Particles, Fields, Gravitation and Cosmology
December 30, 2014
We report a measurement of the indirect CP-violating asymmetries (AΓ) between effective lifetimes of anticharm and charm mesons reconstructed in D0→K+K- and D0→π+π- decays. We use the full data set of proton-antiproton collisions collected by the Collider Detector at Fermilab experiment and corresponding to 9.7fb-1 of integrated luminosity. The strong-interaction decay D∗+→D0π+ is used to identify the meson at production as D0 or D¯0. We statistically subtract D0 and D¯0 mesons originating from b-hadron decays and measure the yield asymmetry between anticharm and charm decays as a function of decay time. We measure AΓ(K+K-)=(-0.19±0.15(stat)±0.04(syst))% and AΓ(π+π-)=(-0.01±0.18(stat)±0.03(syst))%. The results are consistent with the hypothesis of CP symmetry and their combination yields AΓ=(-0.12±0.12)%.
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Published In
Physical Review D - Particles, Fields, Gravitation and Cosmology
DOI
EISSN
1550-2368
ISSN
1550-7998
Publication Date
December 30, 2014
Volume
90
Issue
11
Related Subject Headings
- Nuclear & Particles Physics
- 5107 Particle and high energy physics
- 5101 Astronomical sciences
- 4902 Mathematical physics
- 0206 Quantum Physics
- 0202 Atomic, Molecular, Nuclear, Particle and Plasma Physics
- 0201 Astronomical and Space Sciences
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Aaltonen, T., Amerio, S., Amidei, D., Anastassov, A., Annovi, A., Antos, J., … Errede, S. (2014). Measurement of indirect CP -violating asymmetries in D0 →k+K- and D0 →π+π- decays at CDF. Physical Review D - Particles, Fields, Gravitation and Cosmology, 90(11). https://doi.org/10.1103/PhysRevD.90.111103
Aaltonen, T., S. Amerio, D. Amidei, A. Anastassov, A. Annovi, J. Antos, G. Apollinari, et al. “Measurement of indirect CP -violating asymmetries in D0 →k+K- and D0 →π+π- decays at CDF.” Physical Review D - Particles, Fields, Gravitation and Cosmology 90, no. 11 (December 30, 2014). https://doi.org/10.1103/PhysRevD.90.111103.
Aaltonen T, Amerio S, Amidei D, Anastassov A, Annovi A, Antos J, et al. Measurement of indirect CP -violating asymmetries in D0 →k+K- and D0 →π+π- decays at CDF. Physical Review D - Particles, Fields, Gravitation and Cosmology. 2014 Dec 30;90(11).
Aaltonen, T., et al. “Measurement of indirect CP -violating asymmetries in D0 →k+K- and D0 →π+π- decays at CDF.” Physical Review D - Particles, Fields, Gravitation and Cosmology, vol. 90, no. 11, Dec. 2014. Scopus, doi:10.1103/PhysRevD.90.111103.
Aaltonen T, Amerio S, Amidei D, Anastassov A, Annovi A, Antos J, Apollinari G, Appel JA, Arisawa T, Artikov A, Asaadi J, Ashmanskas W, Auerbach B, Aurisano A, Azfar F, Badgett W, Bae T, Barbaro-Galtieri A, Barnes VE, Barnett BA, Barria P, Bartos P, Bauce M, Bedeschi F, Behari S, Bellettini G, Bellinger J, Benjamin D, Beretvas A, Bhatti A, Bland KR, Blumenfeld B, Bocci A, Bodek A, Bortoletto D, Boudreau J, Boveia A, Brigliadori L, Bromberg C, Brucken E, Budagov J, Budd HS, Burkett K, Busetto G, Bussey P, Butti P, Buzatu A, Calamba A, Camarda S, Campanelli M, Canelli F, Carls B, Carlsmith D, Carosi R, Carrillo S, Casal B, Casarsa M, Castro A, Catastini P, Cauz D, Cavaliere V, Cerri A, Cerrito L, Chen YC, Chertok M, Chiarelli G, Chlachidze G, Cho K, Chokheli D, Clark A, Clarke C, Convery ME, Conway J, Corbo M, Cordelli M, Cox CA, Cox DJ, Cremonesi M, Cruz D, Cuevas J, Culbertson R, D’Ascenzo N, Datta M, De Barbaro P, Demortier L, Deninno M, D’Errico M, Devoto F, Di Canto A, Di Ruzza B, Dittmann JR, Donati S, D’Onofrio M, Dorigo M, Driutti A, Ebina K, Edgar R, Elagin A, Erbacher R, Errede S. Measurement of indirect CP -violating asymmetries in D0 →k+K- and D0 →π+π- decays at CDF. Physical Review D - Particles, Fields, Gravitation and Cosmology. 2014 Dec 30;90(11).
Published In
Physical Review D - Particles, Fields, Gravitation and Cosmology
DOI
EISSN
1550-2368
ISSN
1550-7998
Publication Date
December 30, 2014
Volume
90
Issue
11
Related Subject Headings
- Nuclear & Particles Physics
- 5107 Particle and high energy physics
- 5101 Astronomical sciences
- 4902 Mathematical physics
- 0206 Quantum Physics
- 0202 Atomic, Molecular, Nuclear, Particle and Plasma Physics
- 0201 Astronomical and Space Sciences