Measurement of Indirect C P-Violating Asymmetries in D[superscript 0] → K[superscript +] K[superscript −] and D[superscript 0] → π[superscript +] π[superscript −] Decays at CDF
We report a measurement of the indirect CP-violating asymmetries (A[subscript Γ]) between effective lifetimes of anticharm and charm mesons reconstructed in D[superscript 0]→K[superscript +]K[superscript -] and D[superscript 0] → π[superscript +]π[superscript -] decays. We use the full data set of p...
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| Format: | Article |
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American Physical Society (APS)
2018
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| Online Access: | http://hdl.handle.net/1721.1/115555 https://orcid.org/0000-0002-6047-4211 |
| _version_ | 1826192114580455424 |
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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 the indirect CP-violating asymmetries (A[subscript Γ]) between effective lifetimes of anticharm and charm mesons reconstructed in D[superscript 0]→K[superscript +]K[superscript -] and D[superscript 0] → π[superscript +]π[superscript -] decays. We use the full data set of proton-antiproton collisions collected by the Collider Detector at Fermilab experiment and corresponding to 9.7fb[superscript -1] of integrated luminosity. The strong-interaction decay D[superscript ∗+] →D[supercript 0]π[superscript +] is used to identify the meson at production as D[supercript 0] or D[superscript 0]. We statistically subtract D[superscript 0] and D[superscript 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 A[subscript Γ](K[superscript +]K[superscript -]) =(-0.19±0.15 (stat) ± 0.04 (syst))% and A[subscript Γ](π[superscript +]π[superscript -]) = (-0.01±0.18 (stat) ± 0.03(syst))%. The results are consistent with the hypothesis of CP symmetry and their combination yields A[subscript Γ] = (-0.12±0.12)%. |
| first_indexed | 2024-09-23T09:06:09Z |
| format | Article |
| id | mit-1721.1/115555 |
| institution | Massachusetts Institute of Technology |
| last_indexed | 2024-09-23T09:06:09Z |
| publishDate | 2018 |
| publisher | American Physical Society (APS) |
| record_format | dspace |
| spelling | mit-1721.1/1155552022-09-26T10:30:30Z Measurement of Indirect C P-Violating Asymmetries in D[superscript 0] → K[superscript +] K[superscript −] and D[superscript 0] → π[superscript +] π[superscript −] Decays at CDF 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 the indirect CP-violating asymmetries (A[subscript Γ]) between effective lifetimes of anticharm and charm mesons reconstructed in D[superscript 0]→K[superscript +]K[superscript -] and D[superscript 0] → π[superscript +]π[superscript -] decays. We use the full data set of proton-antiproton collisions collected by the Collider Detector at Fermilab experiment and corresponding to 9.7fb[superscript -1] of integrated luminosity. The strong-interaction decay D[superscript ∗+] →D[supercript 0]π[superscript +] is used to identify the meson at production as D[supercript 0] or D[superscript 0]. We statistically subtract D[superscript 0] and D[superscript 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 A[subscript Γ](K[superscript +]K[superscript -]) =(-0.19±0.15 (stat) ± 0.04 (syst))% and A[subscript Γ](π[superscript +]π[superscript -]) = (-0.01±0.18 (stat) ± 0.03(syst))%. The results are consistent with the hypothesis of CP symmetry and their combination yields A[subscript Γ] = (-0.12±0.12)%. National Science Foundation (U.S.) United States. Department of Energy 2018-05-22T14:31:44Z 2018-05-22T14:31:44Z 2014-12 2014-10 2018-05-09T13:17:32Z Article http://purl.org/eprint/type/JournalArticle 1550-7998 1550-2368 http://hdl.handle.net/1721.1/115555 Aaltonen, T., et al. “Measurement of Indirect C P-Violating Asymmetries in D[superscript 0] → K[superscript +] K[superscript −] and D[superscript 0] → π[superscript +] π[superscript −] Decays at CDF.” Physical Review D, vol. 90, no. 11, Dec. 2014. © 2014 American Physical Society. https://orcid.org/0000-0002-6047-4211 http://dx.doi.org/10.1103/PHYSREVD.90.111103 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) APS |
| spellingShingle | Gomez-Ceballos, Guillelmo Goncharov, Maxim Paus, Christoph M. E. Measurement of Indirect C P-Violating Asymmetries in D[superscript 0] → K[superscript +] K[superscript −] and D[superscript 0] → π[superscript +] π[superscript −] Decays at CDF |
| title | Measurement of Indirect C P-Violating Asymmetries in D[superscript 0] → K[superscript +] K[superscript −] and D[superscript 0] → π[superscript +] π[superscript −] Decays at CDF |
| title_full | Measurement of Indirect C P-Violating Asymmetries in D[superscript 0] → K[superscript +] K[superscript −] and D[superscript 0] → π[superscript +] π[superscript −] Decays at CDF |
| title_fullStr | Measurement of Indirect C P-Violating Asymmetries in D[superscript 0] → K[superscript +] K[superscript −] and D[superscript 0] → π[superscript +] π[superscript −] Decays at CDF |
| title_full_unstemmed | Measurement of Indirect C P-Violating Asymmetries in D[superscript 0] → K[superscript +] K[superscript −] and D[superscript 0] → π[superscript +] π[superscript −] Decays at CDF |
| title_short | Measurement of Indirect C P-Violating Asymmetries in D[superscript 0] → K[superscript +] K[superscript −] and D[superscript 0] → π[superscript +] π[superscript −] Decays at CDF |
| title_sort | measurement of indirect c p violating asymmetries in d superscript 0 k superscript k superscript and d superscript 0 π superscript π superscript decays at cdf |
| url | http://hdl.handle.net/1721.1/115555 https://orcid.org/0000-0002-6047-4211 |
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