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A search for time-integrated CP violation in D0 -> h- h+ decays
The preliminary results of a search for time-integrated CP violation in D0 -> h- h+ (h=K, pi) decays performed with 0.6 fb-1 of data collected by LHCb in 2011 are presented. The flavour of the charm meson is determined by the charge of the slow pion in the D*+ -> D0 pi+ and D*- -> D0bar pi-...
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| Lenguaje: | eng |
| Publicado: |
2012
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| Acceso en línea: | https://dx.doi.org/10.1051/epjconf/20122804007 http://cds.cern.ch/record/1420457 |
| _version_ | 1780924144761700352 |
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| author | Charles, M.J. |
| author_facet | Charles, M.J. |
| author_sort | Charles, M.J. |
| collection | CERN |
| description | The preliminary results of a search for time-integrated CP violation in D0 -> h- h+ (h=K, pi) decays performed with 0.6 fb-1 of data collected by LHCb in 2011 are presented. The flavour of the charm meson is determined by the charge of the slow pion in the D*+ -> D0 pi+ and D*- -> D0bar pi- decay chains. The difference in CP asymmetry between D0 -> K- K+ and D0 -> pi- pi+, Delta ACP = ACP(K- K+) - ACP(pi- pi+), is measured to be Delta ACP = [ -0.82 +- 0.21 (stat.) +- 0.11 (syst.) ] %. This differs from the hypothesis of CP conservation by 3.5 sigma. |
| id | cern-1420457 |
| institution | Organización Europea para la Investigación Nuclear |
| language | eng |
| publishDate | 2012 |
| record_format | invenio |
| spelling | cern-14204572023-03-15T19:12:36Zdoi:10.1051/epjconf/20122804007http://cds.cern.ch/record/1420457engCharles, M.J.A search for time-integrated CP violation in D0 -> h- h+ decaysParticle Physics - ExperimentThe preliminary results of a search for time-integrated CP violation in D0 -> h- h+ (h=K, pi) decays performed with 0.6 fb-1 of data collected by LHCb in 2011 are presented. The flavour of the charm meson is determined by the charge of the slow pion in the D*+ -> D0 pi+ and D*- -> D0bar pi- decay chains. The difference in CP asymmetry between D0 -> K- K+ and D0 -> pi- pi+, Delta ACP = ACP(K- K+) - ACP(pi- pi+), is measured to be Delta ACP = [ -0.82 +- 0.21 (stat.) +- 0.11 (syst.) ] %. This differs from the hypothesis of CP conservation by 3.5 sigma.The preliminary results of a search for time-integrated CP violation in D0 -> h- h+ (h=K, pi) decays performed with 0.6 fb-1 of data collected by LHCb in 2011 are presented. The flavour of the charm meson is determined by the charge of the slow pion in the D*+ -> D0 pi+ and D*- -> D0bar pi- decay chains. The difference in CP asymmetry between D0 -> K- K+ and D0 -> pi- pi+, Delta ACP = ACP(K- K+) - ACP(pi- pi+), is measured to be Delta ACP = [ -0.82 +- 0.21 (stat.) +- 0.11 (syst.) ] %. This differs from the hypothesis of CP conservation by 3.5 sigma.arXiv:1201.6268oai:cds.cern.ch:14204572012-01-31 |
| spellingShingle | Particle Physics - Experiment Charles, M.J. A search for time-integrated CP violation in D0 -> h- h+ decays |
| title | A search for time-integrated CP violation in D0 -> h- h+ decays |
| title_full | A search for time-integrated CP violation in D0 -> h- h+ decays |
| title_fullStr | A search for time-integrated CP violation in D0 -> h- h+ decays |
| title_full_unstemmed | A search for time-integrated CP violation in D0 -> h- h+ decays |
| title_short | A search for time-integrated CP violation in D0 -> h- h+ decays |
| title_sort | search for time-integrated cp violation in d0 -> h- h+ decays |
| topic | Particle Physics - Experiment |
| url | https://dx.doi.org/10.1051/epjconf/20122804007 http://cds.cern.ch/record/1420457 |
| work_keys_str_mv | AT charlesmj asearchfortimeintegratedcpviolationind0hhdecays AT charlesmj searchfortimeintegratedcpviolationind0hhdecays |