Observation of D[superscript 0]-[line over D][superscript 0] Mixing Using the CDF II Detector
We measure the time dependence of the ratio of decay rates for D[superscript 0] → K[superscript +]π[superscript −] to the Cabibbo-favored decay D[superscript 0] → K[superscript −]π[superscript +]. The charge conjugate decays are included. A signal of 3.3 × 10[superscript 4] D[superscript *+] → π[sup...
| Główni autorzy: | , , |
|---|---|
| Kolejni autorzy: | |
| Format: | Artykuł |
| Język: | en_US |
| Wydane: |
American Physical Society
2014
|
| Dostęp online: | http://hdl.handle.net/1721.1/85209 https://orcid.org/0000-0002-6047-4211 |
| _version_ | 1826199683569025024 |
|---|---|
| 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 measure the time dependence of the ratio of decay rates for D[superscript 0] → K[superscript +]π[superscript −] to the Cabibbo-favored decay D[superscript 0] → K[superscript −]π[superscript +]. The charge conjugate decays are included. A signal of 3.3 × 10[superscript 4] D[superscript *+] → π[superscript +]D[superscript 0], D[superscript 0] → K[superscript +]π[superscript −] decays is obtained with D[superscript 0] proper decay times between 0.75 and 10 mean D[superscript 0] lifetimes. The data were recorded with the CDF II detector at the Fermilab Tevatron and correspond to an integrated luminosity of 9.6 fb[superscript −1] for p[line over p] collisions at s√ = 1.96 TeV. Assuming CP conservation, we search for D[superscript 0]-[line over D[superscript 0] mixing and measure the mixing parameters to be R[subscript D] = (3.51 ± 0.35) × 10[superscript −3], y[superscript ′] = (4.3 ± 4.3) × 10[superscript −3], and x[superscript '2] = (0.08 ± 0.18) × 10[superscript −3]. We report Bayesian probability intervals in the x[superscript '2]-y[superscript ′] plane and find that the significance of excluding the no-mixing hypothesis is equivalent to 6.1 Gaussian standard deviations, providing the second observation of D[superscript 0]-[line over D[superscript 0] mixing from a single experiment. |
| first_indexed | 2024-09-23T11:23:52Z |
| format | Article |
| id | mit-1721.1/85209 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T11:23:52Z |
| publishDate | 2014 |
| publisher | American Physical Society |
| record_format | dspace |
| spelling | mit-1721.1/852092022-09-27T19:16:08Z Observation of D[superscript 0]-[line over D][superscript 0] Mixing Using the CDF II Detector 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 measure the time dependence of the ratio of decay rates for D[superscript 0] → K[superscript +]π[superscript −] to the Cabibbo-favored decay D[superscript 0] → K[superscript −]π[superscript +]. The charge conjugate decays are included. A signal of 3.3 × 10[superscript 4] D[superscript *+] → π[superscript +]D[superscript 0], D[superscript 0] → K[superscript +]π[superscript −] decays is obtained with D[superscript 0] proper decay times between 0.75 and 10 mean D[superscript 0] lifetimes. The data were recorded with the CDF II detector at the Fermilab Tevatron and correspond to an integrated luminosity of 9.6 fb[superscript −1] for p[line over p] collisions at s√ = 1.96 TeV. Assuming CP conservation, we search for D[superscript 0]-[line over D[superscript 0] mixing and measure the mixing parameters to be R[subscript D] = (3.51 ± 0.35) × 10[superscript −3], y[superscript ′] = (4.3 ± 4.3) × 10[superscript −3], and x[superscript '2] = (0.08 ± 0.18) × 10[superscript −3]. We report Bayesian probability intervals in the x[superscript '2]-y[superscript ′] plane and find that the significance of excluding the no-mixing hypothesis is equivalent to 6.1 Gaussian standard deviations, providing the second observation of D[superscript 0]-[line over D[superscript 0] mixing from a single experiment. United States. Dept. of Energy National Science Foundation (U.S.) 2014-03-03T15:20:27Z 2014-03-03T15:20:27Z 2013-12 2013-09 Article http://purl.org/eprint/type/JournalArticle 0031-9007 1079-7114 http://hdl.handle.net/1721.1/85209 Aaltonen, T., S. Amerio, D. Amidei, A. Anastassov, A. Annovi, J. Antos, G. Apollinari, et al. “Observation of D[superscript 0]-[line over D][superscript 0] Mixing Using the CDF II Detector.” Physical Review Letters 111, no. 23 (December 2013). © 2013 American Physical Society https://orcid.org/0000-0002-6047-4211 en_US http://dx.doi.org/10.1103/PhysRevLett.111.231802 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 | Gomez-Ceballos, Guillelmo Goncharov, Maxim Paus, Christoph M. E. Observation of D[superscript 0]-[line over D][superscript 0] Mixing Using the CDF II Detector |
| title | Observation of D[superscript 0]-[line over D][superscript 0] Mixing Using the CDF II Detector |
| title_full | Observation of D[superscript 0]-[line over D][superscript 0] Mixing Using the CDF II Detector |
| title_fullStr | Observation of D[superscript 0]-[line over D][superscript 0] Mixing Using the CDF II Detector |
| title_full_unstemmed | Observation of D[superscript 0]-[line over D][superscript 0] Mixing Using the CDF II Detector |
| title_short | Observation of D[superscript 0]-[line over D][superscript 0] Mixing Using the CDF II Detector |
| title_sort | observation of d superscript 0 line over d superscript 0 mixing using the cdf ii detector |
| url | http://hdl.handle.net/1721.1/85209 https://orcid.org/0000-0002-6047-4211 |
| work_keys_str_mv | AT gomezceballosguillelmo observationofdsuperscript0lineoverdsuperscript0mixingusingthecdfiidetector AT goncharovmaxim observationofdsuperscript0lineoverdsuperscript0mixingusingthecdfiidetector AT pauschristophme observationofdsuperscript0lineoverdsuperscript0mixingusingthecdfiidetector |