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Measurement of CP asymmetries in $D^0 \rightarrow hh$ decays
The latest measurements of the individual time-integrated CP asymmetry in the Cabibbo-suppressed decays $D^0\rightarrow hh$ decays are presented. The results are based on $pp$ collision data, corresponding to an integrated luminosity of $3 fb^{-1}$, collected with the LHCb detector at centre-of-mass...
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Lenguaje: | eng |
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SISSA
2016
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Acceso en línea: | https://dx.doi.org/10.22323/1.289.0089 http://cds.cern.ch/record/2239329 |
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author | Gersabeck, Evelina |
author_facet | Gersabeck, Evelina |
author_sort | Gersabeck, Evelina |
collection | CERN |
description | The latest measurements of the individual time-integrated CP asymmetry in the Cabibbo-suppressed decays $D^0\rightarrow hh$ decays are presented. The results are based on $pp$ collision data, corresponding to an integrated luminosity of $3 fb^{-1}$, collected with the LHCb detector at centre-of-mass energies of 7 and 8 TeV. A combination of the asymmetries using both prompt and secondary charm decays is presented $A_{CP}(K^-K^+) = (0.04 \pm 0.12(stat) \pm 0.10(syst))%$; $A_{CP}(\pi^-\pi^+) = (0.07 \pm 0.14(stat) \pm 0.11(syst))$. These are the most precise measurements from a single experiment. The result for $A_{CP}(K^-K^+)$ is the most precise determination of a time-integrated CP asymmetry in the charm sector to date, and neither measurement shows evidence of CP asymmetry. |
id | cern-2239329 |
institution | Organización Europea para la Investigación Nuclear |
language | eng |
publishDate | 2016 |
publisher | SISSA |
record_format | invenio |
spelling | cern-22393292021-09-16T11:32:57Zdoi:10.22323/1.289.0089http://cds.cern.ch/record/2239329engGersabeck, EvelinaMeasurement of CP asymmetries in $D^0 \rightarrow hh$ decayshep-exParticle Physics - ExperimentThe latest measurements of the individual time-integrated CP asymmetry in the Cabibbo-suppressed decays $D^0\rightarrow hh$ decays are presented. The results are based on $pp$ collision data, corresponding to an integrated luminosity of $3 fb^{-1}$, collected with the LHCb detector at centre-of-mass energies of 7 and 8 TeV. A combination of the asymmetries using both prompt and secondary charm decays is presented $A_{CP}(K^-K^+) = (0.04 \pm 0.12(stat) \pm 0.10(syst))%$; $A_{CP}(\pi^-\pi^+) = (0.07 \pm 0.14(stat) \pm 0.11(syst))$. These are the most precise measurements from a single experiment. The result for $A_{CP}(K^-K^+)$ is the most precise determination of a time-integrated CP asymmetry in the charm sector to date, and neither measurement shows evidence of CP asymmetry.SISSAarXiv:1612.05118oai:cds.cern.ch:22393292016-12-15 |
spellingShingle | hep-ex Particle Physics - Experiment Gersabeck, Evelina Measurement of CP asymmetries in $D^0 \rightarrow hh$ decays |
title | Measurement of CP asymmetries in $D^0 \rightarrow hh$ decays |
title_full | Measurement of CP asymmetries in $D^0 \rightarrow hh$ decays |
title_fullStr | Measurement of CP asymmetries in $D^0 \rightarrow hh$ decays |
title_full_unstemmed | Measurement of CP asymmetries in $D^0 \rightarrow hh$ decays |
title_short | Measurement of CP asymmetries in $D^0 \rightarrow hh$ decays |
title_sort | measurement of cp asymmetries in $d^0 \rightarrow hh$ decays |
topic | hep-ex Particle Physics - Experiment |
url | https://dx.doi.org/10.22323/1.289.0089 http://cds.cern.ch/record/2239329 |
work_keys_str_mv | AT gersabeckevelina measurementofcpasymmetriesind0rightarrowhhdecays |