Measurement of CP-violation asymmetries in D[superscript 0]→K[subscript S][superscript 0]π[superscript +]π[superscript -]
We report a measurement of time-integrated CP-violation asymmetries in the resonant substructure of the three-body decay D[superscript 0]→K[subscript S][superscript 0]π[superscript +]π[superscript -] using CDF II data corresponding to 6.0 fb[superscript -1] of integrated luminosity from Tevatron pp...
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| Format: | Article |
| Language: | en_US |
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American Physical Society
2012
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| Online Access: | http://hdl.handle.net/1721.1/74207 https://orcid.org/0000-0002-6047-4211 |
| _version_ | 1826208568712364032 |
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| author | Gomez-Ceballos, Guillelmo Goncharov, Maxim Paus, Christoph M. E. |
| author2 | Massachusetts Institute of Technology. Department of Physics |
| author_facet | Massachusetts Institute of Technology. Department of Physics Gomez-Ceballos, Guillelmo Goncharov, Maxim Paus, Christoph M. E. |
| author_sort | Gomez-Ceballos, Guillelmo |
| collection | MIT |
| description | We report a measurement of time-integrated CP-violation asymmetries in the resonant substructure of the three-body decay D[superscript 0]→K[subscript S][superscript 0]π[superscript +]π[superscript -] using CDF II data corresponding to 6.0 fb[superscript -1] of integrated luminosity from Tevatron pp̅ collisions at √s=1.96 TeV. The charm mesons used in this analysis come from D[superscript *+](2010)→D[superscript 0]π[superscript +] and D[superscript *-](2010)→D̅[superscript 0]π[superscript -], 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 D[superscript 0] and D̅[superscript 0] Dalitz plots. We find no CP-violation effects and measure an asymmetry of ACP=(-0.05±0.57(stat)±0.54(syst))% for the overall integrated CP-violation asymmetry, consistent with the standard model prediction. |
| first_indexed | 2024-09-23T14:07:42Z |
| format | Article |
| id | mit-1721.1/74207 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T14:07:42Z |
| publishDate | 2012 |
| publisher | American Physical Society |
| record_format | dspace |
| spelling | mit-1721.1/742072022-09-28T18:41:05Z Measurement of CP-violation asymmetries in D[superscript 0]→K[subscript S][superscript 0]π[superscript +]π[superscript -] Gomez-Ceballos, Guillelmo Goncharov, Maxim Paus, Christoph M. E. Massachusetts Institute of Technology. Department of Physics Massachusetts Institute of Technology. Laboratory for Nuclear Science Gomez-Ceballos, Guillelmo Goncharov, Maxim Paus, Christoph M. E. We report a measurement of time-integrated CP-violation asymmetries in the resonant substructure of the three-body decay D[superscript 0]→K[subscript S][superscript 0]π[superscript +]π[superscript -] using CDF II data corresponding to 6.0 fb[superscript -1] of integrated luminosity from Tevatron pp̅ collisions at √s=1.96 TeV. The charm mesons used in this analysis come from D[superscript *+](2010)→D[superscript 0]π[superscript +] and D[superscript *-](2010)→D̅[superscript 0]π[superscript -], 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 D[superscript 0] and D̅[superscript 0] Dalitz plots. We find no CP-violation effects and measure an asymmetry of ACP=(-0.05±0.57(stat)±0.54(syst))% for the overall integrated CP-violation asymmetry, consistent with the standard model prediction. 2012-10-23T14:49:01Z 2012-10-23T14:49:01Z 2012-08 2012-07 Article http://purl.org/eprint/type/JournalArticle 1550-7998 1089-4918 http://hdl.handle.net/1721.1/74207 Aaltonen, T. et al. “Measurement of CP-violation asymmetries in D[superscript 0]→K[subscript S][superscript 0]π[superscript +]π[superscript -].” Physical Review D 86.3 (2012). © 2012 American Physical Society https://orcid.org/0000-0002-6047-4211 en_US http://dx.doi.org/10.1103/PhysRevD.86.032007 Physical Review D Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. application/pdf American Physical Society APS |
| spellingShingle | Gomez-Ceballos, Guillelmo Goncharov, Maxim Paus, Christoph M. E. Measurement of CP-violation asymmetries in D[superscript 0]→K[subscript S][superscript 0]π[superscript +]π[superscript -] |
| title | Measurement of CP-violation asymmetries in D[superscript 0]→K[subscript S][superscript 0]π[superscript +]π[superscript -] |
| title_full | Measurement of CP-violation asymmetries in D[superscript 0]→K[subscript S][superscript 0]π[superscript +]π[superscript -] |
| title_fullStr | Measurement of CP-violation asymmetries in D[superscript 0]→K[subscript S][superscript 0]π[superscript +]π[superscript -] |
| title_full_unstemmed | Measurement of CP-violation asymmetries in D[superscript 0]→K[subscript S][superscript 0]π[superscript +]π[superscript -] |
| title_short | Measurement of CP-violation asymmetries in D[superscript 0]→K[subscript S][superscript 0]π[superscript +]π[superscript -] |
| title_sort | measurement of cp violation asymmetries in d superscript 0 k subscript s superscript 0 π superscript π superscript |
| url | http://hdl.handle.net/1721.1/74207 https://orcid.org/0000-0002-6047-4211 |
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