Measurements of charm mixing and CP violation using D[superscript 0] → K[superscript ±]π[superscript ∓] decays
Measurements of charm mixing and CP violation parameters from the decay-time-dependent ratio of D[superscript 0]→K[superscript +]π[superscript -] to D[superscript 0]→K[superscript -]π[superscript +] decay rates and the charge-conjugate ratio are reported. The analysis uses [bar over B]→D[superscript...
| Main Authors: | , , |
|---|---|
| Other Authors: | |
| Format: | Article |
| Published: |
American Physical Society (APS)
2018
|
| Online Access: | http://hdl.handle.net/1721.1/119438 https://orcid.org/0000-0001-5534-1732 https://orcid.org/0000-0001-8285-3346 |
| _version_ | 1826206666295607296 |
|---|---|
| author | Boettcher, Thomas Julian Ilten, Philip J Williams, Michael |
| author2 | Massachusetts Institute of Technology. Department of Physics |
| author_facet | Massachusetts Institute of Technology. Department of Physics Boettcher, Thomas Julian Ilten, Philip J Williams, Michael |
| author_sort | Boettcher, Thomas Julian |
| collection | MIT |
| description | Measurements of charm mixing and CP violation parameters from the decay-time-dependent ratio of D[superscript 0]→K[superscript +]π[superscript -] to D[superscript 0]→K[superscript -]π[superscript +] decay rates and the charge-conjugate ratio are reported. The analysis uses [bar over B]→D[superscript ∗+]μ[superscript -]X, and charge-conjugate decays, where D[superscript ∗+]→D[superscript 0]π[superscript +], and D[superscript 0]→K[superscript ∓]π[superscript ±]. The pp collision data are recorded by the LHCb experiment at center-of-mass energies √s=7 and 8 TeV, corresponding to an integrated luminosity of 3 fb-1. The data are analyzed under three hypotheses: (i) mixing assuming CP symmetry, (ii) mixing assuming no direct CP violation in the Cabibbo-favored or doubly Cabibbo-suppressed decay amplitudes, and (iii) mixing allowing either direct CP violation and/or CP violation in the superpositions of flavor eigenstates defining the mass eigenstates. The data are also combined with those from a previous LHCb study of D[superscript 0]→Kπ decays from a disjoint set of D[superscript ∗+] candidates produced directly in pp collisions. In all cases, the data are consistent with the hypothesis of CP symmetry. |
| first_indexed | 2024-09-23T13:36:40Z |
| format | Article |
| id | mit-1721.1/119438 |
| institution | Massachusetts Institute of Technology |
| last_indexed | 2024-09-23T13:36:40Z |
| publishDate | 2018 |
| publisher | American Physical Society (APS) |
| record_format | dspace |
| spelling | mit-1721.1/1194382022-10-01T16:01:52Z Measurements of charm mixing and CP violation using D[superscript 0] → K[superscript ±]π[superscript ∓] decays Boettcher, Thomas Julian Ilten, Philip J Williams, Michael Massachusetts Institute of Technology. Department of Physics Boettcher, Thomas Julian Ilten, Philip J Williams, Michael Measurements of charm mixing and CP violation parameters from the decay-time-dependent ratio of D[superscript 0]→K[superscript +]π[superscript -] to D[superscript 0]→K[superscript -]π[superscript +] decay rates and the charge-conjugate ratio are reported. The analysis uses [bar over B]→D[superscript ∗+]μ[superscript -]X, and charge-conjugate decays, where D[superscript ∗+]→D[superscript 0]π[superscript +], and D[superscript 0]→K[superscript ∓]π[superscript ±]. The pp collision data are recorded by the LHCb experiment at center-of-mass energies √s=7 and 8 TeV, corresponding to an integrated luminosity of 3 fb-1. The data are analyzed under three hypotheses: (i) mixing assuming CP symmetry, (ii) mixing assuming no direct CP violation in the Cabibbo-favored or doubly Cabibbo-suppressed decay amplitudes, and (iii) mixing allowing either direct CP violation and/or CP violation in the superpositions of flavor eigenstates defining the mass eigenstates. The data are also combined with those from a previous LHCb study of D[superscript 0]→Kπ decays from a disjoint set of D[superscript ∗+] candidates produced directly in pp collisions. In all cases, the data are consistent with the hypothesis of CP symmetry. National Science Foundation (U.S.) 2018-12-04T21:05:44Z 2018-12-04T21:05:44Z 2017-03 2018-08-29T13:31:44Z Article http://purl.org/eprint/type/JournalArticle 2470-0010 2470-0029 http://hdl.handle.net/1721.1/119438 Aaij, R., B. Adeva, M. Adinolfi, Z. Ajaltouni, S. Akar, J. Albrecht, F. Alessio, et al. “Measurements of charm mixing and CP violation using D[superscript 0] → K[superscript ±]π[superscript ∓] decays.” Physical Review D 95, no. 5 (March 23, 2017). © 2017 CERN, for the LHCb Collaboration. https://orcid.org/0000-0001-5534-1732 https://orcid.org/0000-0001-8285-3346 http://dx.doi.org/10.1103/PHYSREVD.95.052004 Physical Review D Creative Commons Attribution 4.0 International License http://creativecommons.org/licenses/by/4.0/ application/pdf American Physical Society (APS) APS |
| spellingShingle | Boettcher, Thomas Julian Ilten, Philip J Williams, Michael Measurements of charm mixing and CP violation using D[superscript 0] → K[superscript ±]π[superscript ∓] decays |
| title | Measurements of charm mixing and CP violation using D[superscript 0] → K[superscript ±]π[superscript ∓] decays |
| title_full | Measurements of charm mixing and CP violation using D[superscript 0] → K[superscript ±]π[superscript ∓] decays |
| title_fullStr | Measurements of charm mixing and CP violation using D[superscript 0] → K[superscript ±]π[superscript ∓] decays |
| title_full_unstemmed | Measurements of charm mixing and CP violation using D[superscript 0] → K[superscript ±]π[superscript ∓] decays |
| title_short | Measurements of charm mixing and CP violation using D[superscript 0] → K[superscript ±]π[superscript ∓] decays |
| title_sort | measurements of charm mixing and cp violation using d superscript 0 k superscript π superscript ∓ decays |
| url | http://hdl.handle.net/1721.1/119438 https://orcid.org/0000-0001-5534-1732 https://orcid.org/0000-0001-8285-3346 |
| work_keys_str_mv | AT boettcherthomasjulian measurementsofcharmmixingandcpviolationusingdsuperscript0ksuperscriptpsuperscriptdecays AT iltenphilipj measurementsofcharmmixingandcpviolationusingdsuperscript0ksuperscriptpsuperscriptdecays AT williamsmichael measurementsofcharmmixingandcpviolationusingdsuperscript0ksuperscriptpsuperscriptdecays |