A search for CP violation using T-odd correlations is performed using the four-body D0 → K+ K− π+ π− decay, selected from semileptonic B decays. The data sample corresponds to integrated luminosities of 1.0 fb^−1 and 2.0 fb^−1 recorded at the centre-of-mass energies of 7 TeV and 8 TeV, respectively. The CP-violating asymmetry a_{CP}^{T‐odd} is measured to be (0.18 ± 0.29(stat) ± 0.04(syst))%. Searches for CP violation in different regions of phase space of the four-body decay, and as a function of the D0 decay time, are also presented. No significant deviation from the CP conservation hypothesis is found.

R. Aaij, B. Adeva, M. Adinolfi, A. Affolder, Z. Ajaltouni, S. Akar, et al. (2014). Search for CP Violation Using T-odd Correlations in D0 → K+ K− π+ π− Decays. JOURNAL OF HIGH ENERGY PHYSICS, 2014(10), 0-20 [10.1007/JHEP10(2014)005].

Search for CP Violation Using T-odd Correlations in D0 → K+ K− π+ π− Decays

CARBONE, ANGELO;GALLI, DOMENICO;MOGGI, NICCOLO';MUSSINI, MANUEL;PATRIGNANI, CLAUDIA;PERAZZINI, STEFANO;VAGNONI, VINCENZO MARIA;ZANGOLI, MARIA;
2014

Abstract

A search for CP violation using T-odd correlations is performed using the four-body D0 → K+ K− π+ π− decay, selected from semileptonic B decays. The data sample corresponds to integrated luminosities of 1.0 fb^−1 and 2.0 fb^−1 recorded at the centre-of-mass energies of 7 TeV and 8 TeV, respectively. The CP-violating asymmetry a_{CP}^{T‐odd} is measured to be (0.18 ± 0.29(stat) ± 0.04(syst))%. Searches for CP violation in different regions of phase space of the four-body decay, and as a function of the D0 decay time, are also presented. No significant deviation from the CP conservation hypothesis is found.
2014
R. Aaij, B. Adeva, M. Adinolfi, A. Affolder, Z. Ajaltouni, S. Akar, et al. (2014). Search for CP Violation Using T-odd Correlations in D0 → K+ K− π+ π− Decays. JOURNAL OF HIGH ENERGY PHYSICS, 2014(10), 0-20 [10.1007/JHEP10(2014)005].
R. Aaij; B. Adeva; M. Adinolfi; A. Affolder; Z. Ajaltouni; S. Akar; J. Albrecht; F. Alessio; M. Alexander; S. Ali; G. Alkhazov; P. Alvarez Cartelle; A...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/354125
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