Measurements of Indirect CP Asymmetries in D[superscript 0] → K[superscript −K[superscript +] and D[superscript 0] → π[superscript −]π[superscript +] Decays
A study of indirect CP violation in D[superscript 0] mesons through the determination of the parameter A[subscript Γ] is presented using a data sample of pp collisions, corresponding to an integrated luminosity of 1.0 fb[superscript −1], collected with the LHCb detector and recorded at the center-o...
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| Format: | Article |
| Language: | en_US |
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American Physical Society
2014
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| Online Access: | http://hdl.handle.net/1721.1/87744 https://orcid.org/0000-0001-8285-3346 |
| _version_ | 1826201254442827776 |
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| author | Williams, Michael |
| author2 | Massachusetts Institute of Technology. Department of Physics |
| author_facet | Massachusetts Institute of Technology. Department of Physics Williams, Michael |
| author_sort | Williams, Michael |
| collection | MIT |
| description | A study of indirect CP violation in D[superscript 0] mesons through the determination of the parameter A[subscript Γ] is presented using a data sample of pp collisions, corresponding to an integrated luminosity of 1.0 fb[superscript −1], collected with the LHCb detector and recorded at the center-of-mass energy of 7 TeV at the LHC. The parameter A[subscript Γ] is the asymmetry of the effective lifetimes measured in decays of D[superscript 0] and [¯ over D][superscript 0] mesons to the CP eigenstates K[superscript −]K[superscript +] and π[superscript −]π[superscript +]. Fits to the data sample yield A[subscript Γ](KK) = (−0.35±0.62±0.12) × 10[superscript −3] and A[subscript Γ](ππ) = (0.33±1.06±0.14) × 10[superscript −3], where the first uncertainties are statistical and the second systematic. The results represent the world’s best measurements of these quantities. They show no difference in A[subscript Γ] between the two final states and no indication of CP violation. |
| first_indexed | 2024-09-23T11:48:44Z |
| format | Article |
| id | mit-1721.1/87744 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T11:48:44Z |
| publishDate | 2014 |
| publisher | American Physical Society |
| record_format | dspace |
| spelling | mit-1721.1/877442022-09-27T22:04:22Z Measurements of Indirect CP Asymmetries in D[superscript 0] → K[superscript −K[superscript +] and D[superscript 0] → π[superscript −]π[superscript +] Decays Williams, Michael Massachusetts Institute of Technology. Department of Physics Williams, Michael A study of indirect CP violation in D[superscript 0] mesons through the determination of the parameter A[subscript Γ] is presented using a data sample of pp collisions, corresponding to an integrated luminosity of 1.0 fb[superscript −1], collected with the LHCb detector and recorded at the center-of-mass energy of 7 TeV at the LHC. The parameter A[subscript Γ] is the asymmetry of the effective lifetimes measured in decays of D[superscript 0] and [¯ over D][superscript 0] mesons to the CP eigenstates K[superscript −]K[superscript +] and π[superscript −]π[superscript +]. Fits to the data sample yield A[subscript Γ](KK) = (−0.35±0.62±0.12) × 10[superscript −3] and A[subscript Γ](ππ) = (0.33±1.06±0.14) × 10[superscript −3], where the first uncertainties are statistical and the second systematic. The results represent the world’s best measurements of these quantities. They show no difference in A[subscript Γ] between the two final states and no indication of CP violation. National Science Foundation (U.S.) 2014-06-12T15:09:11Z 2014-06-12T15:09:11Z 2014-01 2013-10 Article http://purl.org/eprint/type/JournalArticle 0031-9007 1079-7114 http://hdl.handle.net/1721.1/87744 Aaij, R., B. Adeva, M. Adinolfi, C. Adrover, A. Affolder, Z. Ajaltouni, J. Albrecht, et al. “Measurements of Indirect CP Asymmetries in D[superscript 0] → K[superscript −K[superscript +] and D[superscript 0] → π[superscript −]π[superscript +] Decays.” Physical Review Letters 112, no. 4 (January 2014). © 2014 CERN, for the LHCb Collaboration https://orcid.org/0000-0001-8285-3346 en_US http://dx.doi.org/10.1103/PhysRevLett.112.041801 Physical Review Letters 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 American Physical Society |
| spellingShingle | Williams, Michael Measurements of Indirect CP Asymmetries in D[superscript 0] → K[superscript −K[superscript +] and D[superscript 0] → π[superscript −]π[superscript +] Decays |
| title | Measurements of Indirect CP Asymmetries in D[superscript 0] → K[superscript −K[superscript +] and D[superscript 0] → π[superscript −]π[superscript +] Decays |
| title_full | Measurements of Indirect CP Asymmetries in D[superscript 0] → K[superscript −K[superscript +] and D[superscript 0] → π[superscript −]π[superscript +] Decays |
| title_fullStr | Measurements of Indirect CP Asymmetries in D[superscript 0] → K[superscript −K[superscript +] and D[superscript 0] → π[superscript −]π[superscript +] Decays |
| title_full_unstemmed | Measurements of Indirect CP Asymmetries in D[superscript 0] → K[superscript −K[superscript +] and D[superscript 0] → π[superscript −]π[superscript +] Decays |
| title_short | Measurements of Indirect CP Asymmetries in D[superscript 0] → K[superscript −K[superscript +] and D[superscript 0] → π[superscript −]π[superscript +] Decays |
| title_sort | measurements of indirect cp asymmetries in d superscript 0 k superscript k superscript and d superscript 0 π superscript π superscript decays |
| url | http://hdl.handle.net/1721.1/87744 https://orcid.org/0000-0001-8285-3346 |
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