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Observation of CP violation in charm decays with the LHCb Experiment

The existence of CP violation in the decays of strange and beauty mesons is well established experimentally by numerous measurements. By contrast, CP violation in the decays of charmed particles has escaped observation. During the first two runs of the LHC, the LHCb collaboration has collected a sam...

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Autor principal: Carbone, Angelo
Lenguaje:eng
Publicado: 2019
Materias:
Acceso en línea:http://cds.cern.ch/record/2668391
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author Carbone, Angelo
author_facet Carbone, Angelo
author_sort Carbone, Angelo
collection CERN
description The existence of CP violation in the decays of strange and beauty mesons is well established experimentally by numerous measurements. By contrast, CP violation in the decays of charmed particles has escaped observation. During the first two runs of the LHC, the LHCb collaboration has collected a sample of charmed hadrons of unprecedented size. This sample enables some of the most sensitive searches for CP violation ever performed. In this seminar, the results of the latest search for time-integrated CP violation in $D^0 \rightarrow K^-K^+$ and $D^0 \rightarrow \pi^−\pi^+$ decays, performed using the full data set collected by LHCb so far, which corresponds to an integrated luminosity of $9fb^{−1}$, will be presented for the first time. The flavour of the decaying charm meson is determined by looking at the charge of the pion from the strong decay $D^∗(2010)^+ \rightarrow D^0\pi^+$ for promptly produced $D^0$, or at the charge of the muon in semileptonic $\bar{B}^0$,$B^-\rightarrow D^0\mu^−\nu^¯_{\mu}X$ decays for secondary production of $D^0$. In addition, a brief overview of a recent measurement of charm mixing at LHCb will be given.
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spelling cern-26683912019-09-30T06:29:59Zhttp://cds.cern.ch/record/2668391engCarbone, AngeloObservation of CP violation in charm decays with the LHCb ExperimentLHC SeminarTalkThe existence of CP violation in the decays of strange and beauty mesons is well established experimentally by numerous measurements. By contrast, CP violation in the decays of charmed particles has escaped observation. During the first two runs of the LHC, the LHCb collaboration has collected a sample of charmed hadrons of unprecedented size. This sample enables some of the most sensitive searches for CP violation ever performed. In this seminar, the results of the latest search for time-integrated CP violation in $D^0 \rightarrow K^-K^+$ and $D^0 \rightarrow \pi^−\pi^+$ decays, performed using the full data set collected by LHCb so far, which corresponds to an integrated luminosity of $9fb^{−1}$, will be presented for the first time. The flavour of the decaying charm meson is determined by looking at the charge of the pion from the strong decay $D^∗(2010)^+ \rightarrow D^0\pi^+$ for promptly produced $D^0$, or at the charge of the muon in semileptonic $\bar{B}^0$,$B^-\rightarrow D^0\mu^−\nu^¯_{\mu}X$ decays for secondary production of $D^0$. In addition, a brief overview of a recent measurement of charm mixing at LHCb will be given.LHCb-TALK-2019-047oai:cds.cern.ch:26683912019
spellingShingle Talk
Carbone, Angelo
Observation of CP violation in charm decays with the LHCb Experiment
title Observation of CP violation in charm decays with the LHCb Experiment
title_full Observation of CP violation in charm decays with the LHCb Experiment
title_fullStr Observation of CP violation in charm decays with the LHCb Experiment
title_full_unstemmed Observation of CP violation in charm decays with the LHCb Experiment
title_short Observation of CP violation in charm decays with the LHCb Experiment
title_sort observation of cp violation in charm decays with the lhcb experiment
topic Talk
url http://cds.cern.ch/record/2668391
work_keys_str_mv AT carboneangelo observationofcpviolationincharmdecayswiththelhcbexperiment
AT carboneangelo lhcseminar