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Measurement of CP-violation asymmetries in D0→KS0π +π -

Publication ,  Journal Article
Aaltonen, T; Ãlvarez González, B; Amerio, S; Amidei, D; Anastassov, A; Annovi, A; Antos, J; Apollinari, G; Appel, JA; Arisawa, T; Artikov, A ...
Published in: Physical Review D - Particles, Fields, Gravitation and Cosmology
August 13, 2012
Published version (DOI)

We report a measurement of time-integrated CP-violation asymmetries in the resonant substructure of the three-body decay D0→KS0π +π - using CDF II data corresponding to 6.0fb -1 of integrated luminosity from Tevatron pp̄ collisions at √s=1.96TeV. The charm mesons used in this analysis come from D *+(2010) →D0π + and D *-(2010)→D ̄0π -, where the production flavor of the charm meson is determined by the charge of the accompanying pion. We apply a Dalitz-amplitude analysis for the description of the dynamic decay structure and use two complementary approaches, namely, a full Dalitz-plot fit employing the isobar model for the contributing resonances and a model-independent bin-by-bin comparison of the D0 and D ̄0 Dalitz plots. We find no CP-violation effects and measure an asymmetry of A CP=(-0.05±0. 57(stat)±0.54(syst))% for the overall integrated CP-violation asymmetry, consistent with the standard model prediction. © 2012 American Physical Society.

Duke Scholars

Alfred T. Goshaw
Author Alfred T. Goshaw Physics
Ashutosh V. Kotwal
Author Ashutosh V. Kotwal Physics
Mark C. Kruse
Author Mark C. Kruse Physics
Seog Oh
Author Seog Oh Physics
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Published In

Physical Review D - Particles, Fields, Gravitation and Cosmology

DOI

10.1103/PhysRevD.86.032007

EISSN

1550-2368

ISSN

1550-7998

Publication Date

August 13, 2012

Volume

86

Issue

3

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
 

Citation

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Aaltonen, T., Ãlvarez González, B., Amerio, S., Amidei, D., Anastassov, A., Annovi, A., … D’Errico, M. (2012). Measurement of CP-violation asymmetries in D0→KS0π +π -. Physical Review D - Particles, Fields, Gravitation and Cosmology, 86(3). https://doi.org/10.1103/PhysRevD.86.032007
Aaltonen, T., B. Ãlvarez González, S. Amerio, D. Amidei, A. Anastassov, A. Annovi, J. Antos, et al. “Measurement of CP-violation asymmetries in D0→KS0π +π -.” Physical Review D - Particles, Fields, Gravitation and Cosmology 86, no. 3 (August 13, 2012). https://doi.org/10.1103/PhysRevD.86.032007.
Aaltonen T, Ãlvarez González B, Amerio S, Amidei D, Anastassov A, Annovi A, et al. Measurement of CP-violation asymmetries in D0→KS0π +π -. Physical Review D - Particles, Fields, Gravitation and Cosmology. 2012 Aug 13;86(3).
Aaltonen, T., et al. “Measurement of CP-violation asymmetries in D0→KS0π +π -.” Physical Review D - Particles, Fields, Gravitation and Cosmology, vol. 86, no. 3, Aug. 2012. Scopus, doi:10.1103/PhysRevD.86.032007.
Aaltonen T, Ãlvarez González B, 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, Bisello D, Bizjak I, 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, Buzatu A, Calamba A, Calancha C, Camarda S, Campanelli M, Campbell M, Canelli F, Carls B, Carlsmith D, Carosi R, Carrillo S, Carron S, Casal B, Casarsa M, Castro A, Catastini P, Cauz D, Cavaliere V, Cavalli-Sforza M, Cerri A, Cerrito L, Chen YC, Chertok M, Chiarelli G, Chlachidze G, Chlebana F, Cho K, Chokheli D, Chung WH, Chung YS, Ciocci MA, Clark A, Clarke C, Compostella G, Convery ME, Conway J, Corbo M, Cordelli M, Cox CA, Cox DJ, Crescioli F, Cuevas J, Culbertson R, Dagenhart D, D’Ascenzo N, Datta M, De Barbaro P, Dell’Orso M, Demortier L, Deninno M, Devoto F, D’Errico M. Measurement of CP-violation asymmetries in D0→KS0π +π -. Physical Review D - Particles, Fields, Gravitation and Cosmology. 2012 Aug 13;86(3).

Published In

Physical Review D - Particles, Fields, Gravitation and Cosmology

DOI

10.1103/PhysRevD.86.032007

EISSN

1550-2368

ISSN

1550-7998

Publication Date

August 13, 2012

Volume

86

Issue

3

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